MXW 200 - Air conditioner REMKO - Free user manual and instructions

Product Type	Inverter wall-mounted room air conditioner (indoor unit for multi-split system)
Brand / Model	REMKO / MXW 200
Functions	Cooling, heating, dehumidification, automatic, air circulation
Nominal cooling output	2.05 kW (at 27°C indoor / 35°C outdoor)
Nominal heating output	2.41 kW (at 20°C indoor / 7°C outdoor)
Adjustable room temperature range	+17°C to +30°C
Air flow rate (low / medium / high)	300 / 330 / 400 m³/h
Sound level (low / medium / high)	29 / 33 / 35 dB(A)
Dimensions (H x W x D)	250 x 750 x 188 mm
Weight	8.5 kg
Power supply	230 V / 1~ / 50 Hz
Electrical power consumption (cooling / heating)	0.04 kW / 0.04 kW
Refrigerant	R410A
Max. operating pressure	4200 kPa
Refrigerant connections (injection / suction)	1/4 inch / 3/8 inch
Condensation connection diameter	16 mm
Control	Infrared remote control (incl.) with display; manual operation possible
Special functions	SLEEP/TURBO mode, SWING, timer (ON/OFF up to 24 h)
Installation	High wall mounting (min. 1.75 m above floor); multi-split combination with outdoor unit MVT 600/900/950 DC
Maintenance - Air filter	Clean every 2 weeks with vacuum or lukewarm water; dry before reinserting
Maintenance - Housing	Wipe with damp cloth; do not use caustic or solvent-based cleaners
Safety	Disconnect power before cleaning; only qualified personnel for installation/repair
Spare parts / Repairability	Exploded view and spare parts list provided in manual; replacement parts available from REMKO
Warranty	Covered after registering warranty card; otherwise standard conditions apply

Frequently Asked Questions - MXW 200 REMKO

How do I clean the air filter on my MXW 200?

Disconnect power, open the front grill, lift and remove the filter. Clean with a vacuum or lukewarm water (mild detergent if needed). Let it dry completely before reinstalling. Clean every 2 weeks under normal use.

What do error codes E0, E1 etc. mean?

E0: EEPROM error – turn power off for 1 min, then call service. E1: Communication error between indoor and outdoor unit. E2: Phase monitoring. E3: Evaporator fan motor speed low. E5: Hot gas sensor fault. E6: Recirculated air sensor fault. P0-P3: Compressor/inverter issues. See manual for full list.

Why is the unit not responding to the remote control?

Check distance (max 6 m), remove obstacles, replace batteries (AAA), ensure no direct sunlight on receiver, and that no buttons are stuck. If still not working, try manual operation via the indoor unit button.

Can I use the MXW 200 with any REMKO outdoor unit?

No, it must be combined with REMKO MVT 600, 900, or 950 DC series outdoor units. See the manual's combination tables for compatible setups.

How do I set the timer to turn the unit on or off?

Press TIMER-ON or TIMER-OFF button. Use ▲/▼ to set the time (up to 9.5h in 30-min steps, then 10-24h in 1h steps). The timer symbol appears on the display. Press ON/OFF to cancel the timer.

What should I do if condensation leaks from the unit?

Check if the condensation drain line is blocked, damaged, or has insufficient slope (min 2%). Clean the line and collection tray. Ensure the condensation pump (if present) works. Also check insulation on refrigerant pipes.

How often should I service the air conditioner?

Recommended annual maintenance by a qualified specialist. This includes checking refrigerant charge, seals, electrical connections, fan, and cleaning coils. Monthly visual inspection of filters and drainage is advisable.

Is it normal for the unit to blow cold air when set to heating?

No. In heating mode, the fan may delay start to prevent cold draft. If it blows cold air after a few minutes, check if the correct mode is selected (heating symbol) and room temperature set higher than actual. Also check if other indoor units are in cooling mode.

What is the TURBO function?

Pressing the SLEEP/TURBO button activates TURBO mode: the fan runs at maximum speed for rapid cooling or heating. After a period, it reverts to previous settings. SLEEP mode gradually adjusts temperature over 2 hours for comfort.

Can I install the unit myself?

No, installation requires qualified personnel. The unit must be securely wall-mounted (min 1.75 m height), refrigerant pipes connected properly, and electrical wiring done per local standards. Incorrect installation can cause leaks, electrical hazards, or poor performance.

USER MANUAL MXW 200 REMKO

Inverter wall - room air conditioner in multisplit design

Operation · Technology · Spare parts

White cylindrical air conditioner unit with control panel and logo (no visible text or symbols)

Contents

Safety notes	4
Environmental protection and recycling	4
Warranty	4
Transport and packaging	5
Description of the equipment	5
Combinations	5
Operation	6-12
Shutdown	13
Care and maintenance	13-14
Troubleshooting and customer service	15-16
Installation instructions for qualified personnel	17
Installation	18
Condensation connection	18
Electrical connection	19
Electrical connection diagram	20
Electrical circuit diagram	20
Commissioning	21
Unit dimensions	21
Exploded view	22
Spare parts list	22
Technical data	23

These operating instructions should be read carefully prior to commissioning / operation of the equipment!

These instructions are part of the equipment and must always be kept in the vicinity of the installation or on the equipment

Subject to modifications; No liability accepted for errors or misprints!

Safety notes

Carefully read this manual before starting the unit for the first time. It contains useful tips, information

as well as hazard warnings to prevent injury or material damage △. Non-observance of this manual may endanger persons, the environment as well as the equipment itself and will void any claims for liability.

• Store this manual as well as the refrigerant datasheet in the vicinity of the unit.
  The unit should only be set up and installed by qualified personnel.
  The setup, connection and operation of the unit and its components must be in accordance with the operating conditions stipulated in this manual and comply with all applicable local regulations.
  Units designed for mobile use should be safely set up on a suitable floor and in a vertical position. Units designed for stationary use should only be operated in their permanently installed state.
  It is prohibited to make modifications or changes to equipment or components supplied by REMKO as this may cause malfunctions.
  ■ Equipment and components should not be operated in areas where there is a heightened damage risk. Observe the minimum clearances.
  The electrical supply should be adapted to fulfil the requirements of the unit.

The operational safety of equipment and components is only assured providing they are used as intended and in a fully assembled state. Safety devices should not be modified or bypassed.
Do not operate equipment or components with obvious defects or signs of damage.
All housing parts and openings, e.g. air inlets and outlets, must not be blocked by foreign items, fluids or gases.
The equipment and components must be kept in a safe distance from inflammable, explosive, combustible, aggressive and dirty areas or atmospheres.
- Persons coming into contact with equipment parts may suffer burns or injury.
Installation, repair and maintenance work should only be carried out by authorised specialists. Inspection and cleaning can be performed by the operator providing the equipment is not under voltage.
Take appropriate hazard prevention measures when performing installation, repair or maintenance work or cleaning the equipment.
The equipment or components should not be exposed to any mechanical stresses, extreme levels of humidity or direct exposure to sunlight.

Environmental protection and recycling

Disposal of packaging

All products are packed for transport in environmentally friendly materials. Make a valuable contribution to reducing waste and sustaining raw materials. Only dispose of packaging at approved collection points.

Disposal of units and components

For the manufacture of the units and components, only recyclable materials have been used. Help protect the environment by ensuring that the units or components (for example batteries) are not disposed in household waste, but only in accordance with local regulations and in an environmentally safe manner, e.g. through authorised disposal and recycling specialists or at collection points.

Warranty

Prerequisite for any warranty claims is that the purchaser or his client has completely filled out the "warranty registration card" and commissioning report included with the unit at the time when the equipment was purchased and commissioned and returned the completed card to REMKO GmbH & Co. KG.

The warranty conditions are listed in the "General business and delivery conditions. The contractual parties can also agree additional terms beyond the scope of the above. For this reason please contact your direct contracting partner first.

Transport and packaging

The equipment is shipped in sturdy transport packaging. Immediately check the equipment on delivery and make a note of any damage or missing parts on the delivery note. Inform the forwarding agent and contractual partner.

Warranty claims at a later date will not be accepted.

Description of the equipment

The indoor unit on the split-design combined room air conditioning units serves to extract heat from the indoor room being cooled. The outdoor unit then expels this heat to the outside.

If combined heating/cooling units are operated as heaters, the heat absorbed by the outdoor unit can be discharged by the indoor unit into the room being heated.

The unit is designed for installation high up on indoor walls. It is operated via an infrared remote control.

The indoor unit consists of a fin vaporiser, vaporiser fan, regulation system and condensation pan. The indoor unit can be combined with REMKO outdoor units of series MVT 600/900/950 DC with sufficient cooling output. The outdoor unit is controlled via the regulation of the indoor unit.

Condensation pumps are available as an accessory.

Refrigerant pipes are used to connect the indoor unit to the outdoor unit.

Combinations Outdoor unit MVT 600 DC

	MXW200	MXW260	MXW350
One indoor unit
Combin. 1	●
Combin. 2		●
Combin. 3			●
Two indoor units
Combin. 4	● ●
Combin. 5		● ●
Combin. 6			● ●
Combin. 7	●	●
Combin. 8	●		●
Combin. 9		●	●

Outdoor unit MVT 900 DC

	MXW200	MXW260	MXW350
One indoor unit
Combin. 1	●
Combin. 2		●
Combin. 3			●
Two indoor units
Combin. 4	● ●
Combin. 5		● ●
Combin. 6			● ●
Combin. 7	●	●
Combin. 8	●		●
Three indoor units
Combin. 9	● ● ●
Combin. 10		● ● ●
Combin. 11	● ● ●
Combin. 12	● ● ●
Combin. 13	● ● ●
Combin. 14	● ● ●
Combin. 15	● ● ●
Combin. 16		● ● ●
Combin. 17		●	●

Outdoor unit MVT 950 DC

	MXW200	MXW260	MXW350
One indoor unit
Combin. 1	●
Combin. 2		●
Combin. 3			●
Two indoor units
Combin. 4	●●
Combin. 5		●●
Combin. 6			●●
Combin. 7	●	●
Combin. 8	●		●
Combin. 9		●	●
Three indoor units
Combin. 10	●●●
Combin. 11		●●●
Combin. 12			●●●
Combin. 13		●●●
Combin. 14	●●●
Combin. 15	●●●
Combin. 16	●●●
Combin. 17	●●●
Combin. 18	●●●
Combin. 19		●●●
Four indoor units
Combin. 20	●●●●
Combin. 21		●●●●
Combin. 22	●●●●
Combin. 23	●●●●
Combin. 24	●●●●
Combin. 25	●●●●
Combin. 26	●●●●
Combin. 22	●●●●
Combin. 28		●●●●
Combin. 29	●●●●
Combin. 30	●●●●

Operation

The indoor unit is easy to operate using an infrared remote control. This is supplied as standard. The indoor unit beeps to acknowledge the correct transmission of data. If it is not possible to program the indoor unit with the remote control, then it can also be manually operated.

Manual operation

The indoor units can be put into operation manually. After the air inlet screen has been opened, the inner recessed button can be pressed and automatic mode can

be activated.

In manual operation, the following settings apply:

Cooling mode: last setting Fan speed AUTO

Heating mode: last setting Fan: AUTO

Press the button on the infra-red remote control to interrupt manual operation.

Infrared remote control

The infrared remote control sends the programmed settings in a distance of up to 6 m to the

receiver of the indoor unit.

A trouble free reception of data is only possible if the remoter control is directed to the receiver and no objects hinder the transmission.

First insert the supplied batteries (two each, Type AAA) into the remote control.

To do so, remove the cover on the battery compartment and insert the batteries, in correct polarity. (see marks).

Display on indoor unit

The display lights up according to the settings.

CAUTION

Problems are shown in code (see chapter Troubleshooting and Customer service).

Display on indoor unit

NOTE

Immediately replace flat batteries with a new set, otherwise there is a risk of leakage. It is recommended that the batteries are removed if the equipment is shut down for long periods.

Maximum distance

Buttons on the remote control

Buttons on the remote control

① "ON/OFF" Button

Press this button to start the unit.

② "MODE" Button

Press this button to select the operating mode. The indoor unit has 5 modes:

1. Automatic mode In this mode, the unit works in cooling or in heating mode.

2. Cooling mode In this mode, the warm room air is cooled to the desired temperature.

3. Dehumidification mode In this mode the room is mainly dehumidified, the adjusted temperature is retained.

4. Heating mode In this mode, the warm air in the room is warmed up to the desired temperature.

5. Circulation mode In this mode, the air in the room is recirculated. Temperature selection is not possible.

③ Button "▲"

This button is used to the desired temperature can be increased up to 30 °C.

④ Button "▼"

This button is used to the desired temperature can be increased down to 17 °C.

⑤ "FAN" button

Press this button to set the required fan speed. 4 settings are available: automatic, high, medium and low fan speed.

⑥ "SLEEP/TURBO" Button

Pressing this button will automatically increase or decrease the target temperature by 1 °C within an hour in cooling and heating mode respectively. With the TURBO function, the maximum fan speed can be activated.

⑦ "SWING" Button

This button directly activates the oscillating function of the fins for better air distribution in the room.

⑧ "AIR DIRECTION" Button

With this button, the desired fin position can be set. There are 5 positions and an oscillating function available.

⑨ "TIMER-ON" Button

This button serves to program the automatic activation time for the device within the next 24 hours.

⑩ "TIMER-OFF" Button

This button serves to program the automatic switch-off time for the device within the next 24 hours.

REMKO MXW

Button functions

A symbol is shown on the display to indicate that the settings are being transferred.

ON/OFF Button

Simple line drawing of a smart home with Wi-Fi icons and weather symbols (no text or labels)

By pressing the ON / OFF button, you can activate or deactivate your unit. The programmed settings and adjustment values before the unit was turned off will appear on the display.

graph LR
    A["Rectangular Component"] -->|ON/OFF| B["Rectangular Component"]
    B --> C["End"]

▲▼ Buttons

The ▲/▼ buttons can be used to reduce and increase the desired nominal temperature.

MODE Button

Use the MODE button to select between the individual operating modes. A total of 5 modes are available:

1. Automatic automatic selection of cooling or heating operation
2. Cooling predominantly summer operating mode
3. Dehumidification Summer or winter operating mode
4. Heating predominantly winter operating mode
5. Air circulation only for circulation of air

Automatic Cooling Dehumidification Heating
Air circulation

graph LR
    A["Start"] --> B{Condition}
    B -->|MODE| C["Process Step 1"]
    C -->|MODE MODE MODE MODE| D["Process Step 2"]
    D --> E["End"]

AUTOMATIC Mode

In automatic mode, the control system autonomously selects between heating, cooling and circulating modes. The nominal temperature can only be preselected in a different mode and is then applied to automatic mode.

graph LR
    A["Room Temperature"] --> B["26°C"]
    B --> C["ON/OFF"]
    C --> D["Heating or AIR Circulation"]
    D --> E["COOLING or HEATING"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    note1["The nominal temperature is below the room temperature"]
    note2["The nominal temperature is above the room temperature"]

COOLING Mode

In cooling mode, the air in the room is cooled down to the set target temperature. The desired room temperature is set with the ▲/▼ buttons in 1 °C increments. If the room temperature is 1 °C above the selected nominal temperature, the indoor unit starts to cool the air in the room. The inverter controller checks the difference between the adjusted target temperature and the actual room temperature. If there is a large difference, the cooling output is very high. If the difference is smaller, a lower cooling output is produced. This serves to maintain the air discharge temperature and the room temperature.

If the adjusted room temperature is lower than approx. 2 °C, then the control system turns the cooling function off. To protect the compressor, the regulation only turns the cooling on again after a waiting period of 3 minutes.

graph LR
    A["MODE"] --> B["OR"]
    B --> C["15°"]
    C --> D["COOLING OPERATION"]

Functional diagram

DEHUMIDIFICATION Mode

In dehumidification mode, the room temperature is set to 24 °C. Due to the low temperature of the refrigerant, the dew point of the air on the vaporiser is lower. The excess moisture in the air is condensed by the vaporiser, the room is dehumidified. The fan speed should be set to automatic in order to achieve a maximum level of dehumidification. In automatic mode, the fan is intermittently switched on and off.

graph LR
    A["Refrigeration Device"] -->|MODE| B["Refrigeration Device"]
    B -->|OR| C["24°C Display"]
    C -->|ON/OFF| D["Dehumidification Mode"]

Functional diagram

HEATING Mode

CAUTION

Heating mode has priority!

If an indoor unit switches over to heating mode, then cooling is switched off for the other indoor devices in cooling mode.

Cooling is not possible during heating operation.

In the heating mode, you can simultaneously heat all of the rooms in spring or fall. The desired room temperature is set with the ▲/▼ buttons in 1 °C increments. If the room temperature is 1 °C below the selected target temperature, the indoor unit starts to heat the air in the room.

The inverter controller checks the difference between the adjusted target temperature and the actual room temperature.

In the event of a greater difference, a higher cooling performance is created.

In the event of a smaller difference, a lower cooling performance is created.

This serves to maintain the air discharge temperature and the room temperature.

If the set room temperature is exceeded by approx. 2 °C, then the control system turns the heating function off. To protect the compressor, the regulation only turns the heater on again after a waiting period of 3 minutes.

In heating mode, the indoor unit fan motor is switched on after a delay, in order to prevent the discharge of cold air.

The fins on the outdoor unit could crack at low outdoor temperatures. Regular reversal of the cooling circuit results in a defrosting action. The display shows "H1" during the defrosting period.

Heating mode operational sequence

graph LR
    A["Window with water"] -->|MODE| B["Refrigerator with sun icon"]
    B -->|OR| C["Refrigerator with 26° angle"]
    C -->|FAN| D["Fan"]
    D --> E["Heating Mode"]

Functional diagram

During the defrosting cycle, the indoor unit vaporiser fan and the outdoor unit liquefier fan are switched off.

After the cycle is concluded, the fans are switched to their previous settings.

graph LR
    A["Reverse flow valve"] --> B["Compressor operation AT"]
    B --> C["Fan operation AT"]
    C --> D["Fan operation IT"]
    D --> E["Defrost period 30 sec."]
    E --> F["Operation: <7 Min."]
    E --> G["Stop: 3 Min."]
    style A fill:#99ccff,stroke:#333
    style B fill:#99ccff,stroke:#333
    style C fill:#99ccff,stroke:#333
    style D fill:#99ccff,stroke:#333
    style E fill:#99ccff,stroke:#333
    style F fill:#99ccff,stroke:#333
    style G fill:#99ccff,stroke:#333
    style_H["Start"] --> I["End"]

AIR CIRCULATION Mode

In ventilation mode, the air in the room is only circulated.

The room temperature cannot be changed in this mode.

The cooling or heating operation is not activated.

graph LR
    A["Personnel with water"] -->|MODE| B["Box with plus sign"]
    B -->|FAN| C["Box with plus symbol"]
    C --> D["AIR CIRCULATION"]

FAN Button

The fan speed can be adjusted with this button. A selection can be made between low, medium, high and automatic fan speed.

graph LR
    A["Waveform"] -->|FAN| B["Waveform"]
    B -->|FAN| C["Waveform"]
    C -->|FAN| D["Waveform"]
    D -->|FAN| E["Output"]

SLEEP/TURBO Button

This button activates a programming function, which causes the target temperature in cooling mode to increase after one hour by 1°C and after two hours by 2°C. In heating mode, the target temperature is decreased after one hour by 1°C and after 2 hours by 2°C.

The display on the indoor unit goes out.

The TURBO function is used to activate the maximum fan speed

graph LR
    A["Input"] --> B["Deactivated Unit 1"]
    B --> C["SLEEP/TURBO"]
    C --> D["Deactivated Unit 2"]
    D --> E["SLEEP/TURBO"]
    E --> F["Output"]
    style A fill:#f9f,stroke:#333
    style F fill:#f9f,stroke:#333

SWING and AIR DIRECTION Buttons

The oscillating function of the air discharge fins can be adjusted with this button. The air distribution in the room is improved with the swing function. In order to adjust the aim of the air discharge fins to a particular direction, the AIR DIRECTION button must be pressed briefly. In order to activate the automatic swing function, the AIR DIRECTION button must be pressed for longer than 2 seconds.

graph LR
    A["Square container with internal flow"] -->|SWING| B["deactivated rectangle"]
    B -->|SWING| C["Final output"]

TIMER Button • TIMER-ON / OFF

The activation and switch-off time can be programmed with this button. The timer is activated/deactivated by means of pressing the timer on and the timer off button. The timer symbol ON TIMER or OFF TIMER appears. The desired activation or switch-off time for the display up to 9.5 (hours) in 30 minute intervals and from displayed 10 in 60-minute intervals can be adjusted by means of pressing the Timer on or the Timer off buttons.

When the programmed time has been reached, the device is automatically turned on or off. If the indoor unit is automatically switched on, then the mode, temperature and fan speed for the last setting is reactivated.

The prior deletion of the on and off time can be achieved by pressing the On/Off button. The timer display on the indoor unit goes out.

TIMER ON button - activation delay

graph LR
    A["TIMER ON"] --> B["0.5 Hz"]
    B --> C["E"]
    C --> D["TIMER ON"]
    D --> E["1.0 Hz"]
    E --> F["E"]
    F --> G["TIMER ON"]
    G --> H["5.0 Hz"]
    H --> I["E"]
    I --> J["Activation-delay"]

TIMER OFF button - switch-off delay

graph LR
    A["TIMER OFF"] --> B["0.5 m"]
    B --> C["TIMER OFF"]
    C --> D["1.0 m"]
    D --> E["TIMER OFF"]
    E --> F["5.0 m"]
    F --> G["Switch-off delay"]

Manual air distribution

There are individually adjustable fins for adjusting the horizontal air distribution on the air discharge side.

CAUTION

Moving interior parts, e.g. fans, have the potential to cause injury during operation! Only make adjustments after swing operation has been switched off.

Manual air distribution

Shutdown

Temporary Shutdown

1. Allow the indoor unit to run for 2 to 3 hours in air circulation mode or in cooling mode at the maximum temperature setting in order to remove any residual moisture from the unit.
2. Shut down the system using the remote control.
3. Switch off the voltage supply to the unit.
4. Check the unit for visible signs of damage and clean it as described in the chapter "Care and maintenance".

Permanent Shutdown

Ensure that equipment and components are disposed of accordance with local regulations, e.g. through authorised disposal and recycling specialists or at collection points.

Contact REMKO GmbH & Co. KG or your contract partner for a list of specialist companies near you.

Care and maintenance

Regular care and observation of some basic points will ensure trouble-free operation and a long service life.

CAUTION

Prior to performing any work, ensure the equipment is isolated from the voltage supply and secured to prevent accidental switch-on!

Care

■ Ensure the unit is protected against dirt, mould and other deposits.
Clean the indoor and outdoor unit using a damp cloth. Do not use any caustic, abrasive or solvent-based cleaning products. Do not use a jet of water.
- Clean the fins on the unit prior to long shutdown periods.

Maintenance

It is recommended that maintenance contract with annual maintenance interval with an appropriate specialist company.

TIP

This ensures the operational reliability of your equipment!

NOTE

The statutory regulations require an annual sealing test for the refrigerant circuit in relation to the refrigerant filling level. The inspection and documentation is to be carried out by corresponding specialist engineers.

Type of taskChecks/Maintenance/Inspections	Commissioning	Monthly	Six-monthly	Yearly
General	●			●
Measure voltage and current	●			●
Check compressor/fans are functioning correctly	●			●
Check fan is functioning correctly	●			●
Dirt on liquefier/vaporiser	●	●
Check refrigerant fill quantity	●		●
Check condensation drain	●		●
Test insulation	●			●
Check moving parts	●			●
Sealing test for refrigerant circuit	●			● 1)

1) see note

Cleaning the housing

1. Disconnect the power supply to the unit.
2. Open the air intake grill on the front side and fold it upward.
3. Clean the grill and housing using a soft, damp cloth.
4. Reconnect the power supply again.

Air filter for indoor unit

Clean the air filter at intervals of no more than 2 weeks. Reduce this interval in case of heavily soiled air.

Cleaning the filter

1. Disconnect the supply voltage to the equipment.
2. Open the front side of the unit by folding the grill upward and letting it engage (Fig. 1).
3. Lift the filter up slightly and pull it out from underneath.(Fig. 1).
4. Clean the filter with a regular vacuum cleaner (Fig. 2). To do so, turn the dirty side upward.
5. Any dirt can also be removed carefully with lukewarm water and mild cleaning agents (Fig. 3). To do so, turn the dirty side downward.
6. If water is used, let the filter dry out properly in air before replacing it in the unit.

7. Carefully insert the filter. Ensure it locates correctly.

8. Close the front side as described above but in reverse order.

9. Switch the supply voltage back on.
10. Switch the unit back on.

Cleaning the condensation pump (optional equipment)

An optional integrated or separate condensation pump may be in the indoor unit, which pumps out any accumulated condensation into higher positioned drains.

Observe the care and maintenance guidelines in the separate operating instruction manual.

1 Fold up the guard 2 Clean with a vacuum cleaner

Exterior view of a modern air conditioner unit with cooling fins and ventilation duct (no text or symbols visible)

Illustration of a stylus writing on a grid-patterned surface (no text or symbols)

3 Cleaning with lukewarm water

3D illustration of a blue tool inserted into a grid-patterned surface with a metal pipe extending upward (no text or symbols)

Troubleshooting and customer service

The equipment and components are manufactured using state-of-the-art production methods and tested several times to verify their correct function. If malfunctions should occur, please check the functions as detailed in the list below. For installations with an indoor unit and outdoor unit, refer to the chapter "Troubleshooting and customer service" in both manuals. Please inform your dealer if the unit is still not working correctly after all the functional checks have been performed!

Malfunction

Fault Possible cause	Check Remedial measures
The unit does not start or switches itself off.	Another indoor unit is in heating mode.	Check the mode of the other indoor units.	Operate all indoor units in cooling mode or switch them off.
	Power outage, undervoltage	Are all other electrical installations functioning correctly?	Check voltage if necessary wait before switching back on
	Defective mains fuseMain circuit breaker is open	Are all lighting circuits functioning correctly?	Replace mains fuseClose main circuit breaker
	Damaged mains cable	Are all other electrical installations functioning correctly?	Repair by a specialist
	Waiting time after switch-on too short	Is there a restart after approx. 5 minutes?	Schedule longer waiting periods
	Temperature outside operating range	Are the fans for the indoor unit and outdoor unit working?	Note the temperature ranges of the indoor unit and the outdoor unit
	Overvoltages due to thunderstorms	Have there been any lighting strikes in the area recently?	Turn the main fuse off and turn it on againHave it checked by a specialist
	Fault in external condensation pump	Did the pump turn off due to a fault outage?	Check pump clean if necessary
The unit does not respond to the remote control	Transmission distance too large / Receiver faulty	When pressing the button is there a signal sound on the indoor unit?	Reduce the distance to less than 6 m or change position
	Defective remote control	Is the outdoor component in manual operation?	Replace the remote control
	Receiver or transmitter unit exposed to excessive solar radiation	Is the function working if shaded?	Place the transmitter or receiver unit in the shade
	Electro-magnetic fields interfere with transmission	Is the function working when turning off any sources of interference?	Signal is not transmitted when interference sources are operational
	Button on remote control jammed / two buttons pressed at same time	Does the “Send” symbol appear on the display?	Release the button / only press one button
	Batteries in remote control depleted	Have new batteries been inserted? Is the display incomplete?	Insert new batteries

Please note the continuation of this „Troubleshooting chart“ on the next page!

Fault Possible cause	Check Remedial measures
The unit is running with reduced or without cooling or heating output	Filter is dirty / air inlet / outlet opening is blocked by by debris	Have the filters been cleaned? Clean the filters
	Doors and windows open / heating or cooling load was increased	Have there been any constructional / application-related changes?	Close doors and windows / install additional systems
	Neither cooling nor heating mode has been set	Does the "cooling / heating" symbol appear in the display?	Correct the settings for the unit
	Fins of outdoor unit are blocked by debris	Is the fan on the outdoor unit running are the fins unobstructed?	Check fan or winter regulation, reduce air resistance
	Leaking refrigerant circuit	Are there signs of frost on the fins of the indoor unit?	Repair by a specialist
Condensation output on the unit	Drain pipe of the collection container blocked / damaged	Is unobstructed condensation drainage ensured?	Clean the drainage pipe and collection container
	Faulty external condensation pump or float	Is the condensation pan full of water and the pump is not working?	Call out a specialist to replace the pump
	Condensation has not drained away and has collected in the condensation line	Is the condensation line routing sloped downhill and is it clear?	Route the condensation line in a downhill slope or clean it if necessary
	Condensation does not drain off	Are the condensation lines unblocked and is there a steady fall? Are the condensation pump and float switch functioning correctly?	The condensation line must have a fall. If necessary, clean the pipe. A faulty condensation pump and float switch should be replaced.
	Leaking refrigerant circuit	Are there signs of severe frost on the large stop valve?	Repair by certified service centre.

Problem display by blinker code

Display Cause Required action
E0 EEPROM error		Switch off the power to device for 1 min.Contact specialist dealer
E1 Communication error between outdoor unit and indoor unit Contact specialist dealer
E2 Phase monitoring has responded Check wiring
E3 Evaporator fan motor speed too low / defective Contact specialist dealer
E5 Sensor discharge hot gas AT faulty / connection interrupted Check connection and plug
E6 Sensor recirculated air IT faulty / connection interrupted Check connection and plug
P0	Rotational speed monitoring on compressor has responded (Inverter module)	Check connections CN4, CN1 on the AT PCB / contact specialist dealer
P1 Overvoltage protection AT tripped (250V) Check the voltage of the mains cable
P2 Excessive temperature (Klixon) compressor has tripped		Check refrigerantCheck the resistance of the compressor sensor (normal 0Ω)
P3 Overcurrent compressor has responded		Check winding resistance of the compressor (1Ω = U-V / U-W / V-W)

Installation instructions for qualified personnel

Important points prior to installation

For installation of the entire system, observe the operating instructions of the indoor unit and the outdoor unit.

- Transport the unit in its original packaging as close as possible to the installation location. This avoids transportation damage.

Check the contents of the packaging for completeness and check the unit for visible transport damage. Immediately notify any deficiencies to the contractual partner and forwarding agent.

Lift the unit at the corners and not by the refrigerant or condensation connections.

The refrigerant pipes (injection and suction pipe), valves and connections to make them tight against vapour diffusion. If necessary, also insulate the condensation line.

- Select an installation location which allows air to freely flow through the inlet and outlet (see section "Minimum clearances")

Do not install the unit in the immediate vicinity of devices with intensive thermal radiation. Installation near sources of thermal radiation reduces the output of the unit.

- Install the refrigerant pipes from the indoor unit to the outdoor unit.

Seal off open refrigerant pipes with suitable caps or adhesive strips to avoid the infiltration of moisture and never kink or compress the refrigerant pipes.
Only use the union nuts for the refrigerant pipes included in the delivery, and remove them shortly before connecting the refrigerant pipes.
■ Establish all electrical connections connections in accordance with the relevant DIN- and VDE standards.
See electrical connection diagram Ensure the electrical cables are properly connected to the terminals, otherwise there is a risk of fire.

Installation material

The indoor unit is fastened using 4 threaded rods (provided by the customer) over a wall brace.

Selection of the installation location

The indoor unit is designed for horizontal wall installation above doors.

However, it can also be used in the upper wall area (min. 1.75 m above the floor).

Minimum clearances

Observe the minimum clearances to allow access for maintenance repair work and for optimum air distribution.

Minimum clearances

Connection variations

The following connection variations for the refrigerant, condensation and control lines can be utilized.

Connection variations

Diagram of a mechanical device with four labeled parts (1 to 4) and green directional arrows indicating motion or flow, no readable text or symbols present.

1 Outlet on the wall, right
2 Outlet through the wall, right
3 Outlet through the wall, left
4 Outlet on the wall, left

NOTE

There is an approx. 50 cm long pipe permanently installed from right to left in the indoor unit. This is to be taken into consideration when undertaking preinstallation work on site.

Installation

NOTE

Installation should only be performed by authorised specialists.

Unit installation

The indoor unit is attached by means of a wall bracket, under consideration of air discharge side located in the lower part.

1. Mark the mounting points on the statically permissible building sections according to the dimensions of the unit.
2. If necessary, remove the break out opening on the housing.
3. Connect the refrigerant pipes, electrical cables and condensation line to the indoor unit as described below.
4. Hang the indoor unit onto the wall bracket by tilting it back slightly and by pressing the bottom part of the unit against the bracket.
5. Check again to ensure that the unit is level (Figure 4).

4 Horizontal alignment

Diagram showing a container with green arrows pointing to a brick wall and a horizontal rod (no text or symbols)

The wall bracket for the unit must be attached with suitable screws and anchors.

Connection of refrigerant pipes

The on-site connection of the refrigerant pipes is made at the rear of the unit.

If necessary, a reduction or expansion needs to be installed on the indoor unit. These fittings are included as standard with the indoor unit.

Once installed, the connections should be insulated to make them vapour diffusion proof.

CAUTION

The units are factory filled with dry nitrogen to check for leaks. The pressurised nitrogen is released when loosening the union nuts.

Condensation connection

Due to the dew point shortfall, condensation forms on the vaporiser during the cooling operation on the indoor unit.

Below the vaporiser is a collection tray, which must be connected to a drain.

The condensation line should have a fall of min. 2 %. (Fig. 5). If necessary, fit vapour diffusion proof insulation.
The condensation line from the unit should run freely into the drainage pipe. If the condensation runs directly into a sewer pipe, install a trap to prevent any unpleasant odours.
When operating the unit at outdoor temperatures below 0 °C, ensure the condensation line is laid to protect it against frost. If necessary, install a pipe heater.
■ After completed routing, check for unobstructed condensation discharge and ensure that a permanent seal is provided.

5 Condensation connection

The condensation hose is designed to be installed on the left side (view from front).

Electrical connection

A protected mains supply cable is to be connected to the outdoor unit and 4-core control line is to be connected to the indoor unit respectively.

CAUTION

All electrical installation work should be performed by specialist contractors. Isolate the voltage supply when connecting the electrical terminals.

We recommend to install a main / repair switch on the building near the indoor unit.
The terminal blocks for making the connections are located at the rear of the unit. When the unit is installed, measurements can be made from the front by removing the cover.
If an optional condensation pump is used in conjunction with the unit, it may be necessary to install an additional relay with a higher contact rating after the switch-off contact on the pump to switch off the compressor.

The device's scope of delivery includes a five metre long, four-core control line for connecting the indoor unit to the outdoor unit. The control line to the outdoor unit contains a data cable which serves to realise communication between the indoor unit and the outdoor unit. This is used for controlling the cooling and heating performance and for forwarding fault indications to the indoor unit. If the length is insufficient, you can extend these control lines on the indoor unit.

Make the connection as follows:

1. Open the air intake grill.
2. Unfasten the covers on the right side (figure 6).
3. Loosen the control line on the terminal block and remove the control cable.

4. Connect the control line that has been pre-prepared on-site to the terminal (see electrical connection diagram S.20).

5. Connect the on-site pre-prepared control line with the supplied control cable in a professional manner.

6. Insert the control line plug into the corresponding socket on the outdoor unit.

7. Re-assemble the unit.

6

Connecting the unit

Electrical connection diagram

Connection MVT 600 DC / MVT 900 DC / 950 DC

Outdoor unitIndoor unit Mains cable

Electrical circuit diagram

MXW 200 to 350

graph TD
    A["Plug to outdoor unit"] --> B["L"]
    A --> C["N"]
    A --> D["S"]
    A --> E["L"]
    A --> F["S"]
    A --> G["CN10"]
    A --> H["CN9"]
    A --> I["S"]
    A --> J["CN8"]
    A --> K["CN5"]
    A --> L["Transformer"]
    L --> M["Control board"]
    M --> N["CN1"]
    M --> O["CN2"]
    M --> P["CN3"]
    M --> Q["CN4"]
    M --> R["CN6"]
    M --> S["CN7"]
    M --> T["Vaporiser fan"]
    M --> U["SWING motor"]
    M --> V["Air circulation sensor"]
    M --> W["Vaporiser sensor"]
    M --> X["Display board"]
    M --> Y["Manual operation"]

Commissioning

NOTE

Commissioning should only be performed by specially trained personnel and documented after the certificate has been issued.

Observe the manuals for the indoor unit and outdoor unit when commissioning the entire system.

Functional test for cooling mode.

1. Switch the supply voltage on.
2. Use the remote control to turn on the unit and select the cooling mode, maximum fan speed and lowest target temperature.

3. Measure and record all the required values in the commissioning report and check the safety functions.

4. Check the control system for the unit using the functions described in the chapter "Operation". Timer, temperature setting, fan speeds and changing to ventilation or dehumidification mode.

5. Check the correct function of the condensation line by pouring distilled water into the condensation tray. A bottle with a spout is recommended for pouring the water into the condensation tray.

Functional test for heating mode.

1. Switch the supply voltage on.

2. Use the remote control to switch on the unit and select the heating mode, maximum fan speed and highest target temperature.

3. Measure and record all the required values in the commissioning report and check the safety functions.

4. Check the control system for the unit using the functions described in the chapter "Operation". Timer, temperature setting, fan speeds.

Final tasks

■ Re-fit all the dismantled parts.
- Familiarize the operator with the system.

NOTE

Check that the stop valves and valve caps are tight after carrying out any work on the refrigerant circuit. If necessary, use appropriate sealant products.

Unit dimensions

MXW 200 - 260

MXW 350

All values in mm

We reserve the right to modify the dimensions and constructional design as part of the ongoing technical development process.

Exploded view MXW 200 / MXW 260 / MXW 350

We reserve the right to modify the dimensions and constructional design as part of the ongoing technical development process.

Spare parts list

No. Designation MXW 200 MXW 260 MXW 350
1 Complete front face	111063 111001 111002
2 Air filter, set	111064 111003 111004
3 Board, display	111005 111005 111005
4 Swing motor	111065 111006 111006
5 Air outlet fins, set	111066 111007 111008
6 Condensation tray	111067 111009 111010
7 Vaporiser	111068 111011 111012
8 Fan wheel	111069 111013 111014
9 Fan motor	111015 111015 111016
10 Control board	111070 111017 111018
11 Transformer	111019 111019 111020
12 IR remote control	111021 111021 111021
Spare parts (not illustrated)
	Air circulation sensor	111022 111022 111022
	Vaporiser sensor	111023 111023 111023

When ordering spare parts, please state the computerised part no., unit number and type (see identification plate)!

Technical data

Series MXW 200 MXW 260 MXW 350
Operating mode Wall unit for cooling and heating
Nominal cooling output1)	kW 2,05	2,61 3,53
Nominal heating output2) kW 2,41 2,86 4,11
Operating range (room volume), approx. m3 60 80	110
Adjustment rangeroom temperature °C +17 to +30
Working range °C +17 to +32
Refrigerant R 410A		4)
Operating pressure max. / per cooling circuit	kPa	4200 / 4200
Air flow rate per stage	m3/h	300 / 330 / 400	410/460/500	420/520/680
Noise output per stage3)	dB(A)	29 / 33 / 35	32/34/36	28/33/39
Voltage supply	V/Hz	230 / 1~ / 50
Protection degree	IP	X 0
Nom. electrical power consumption, cooling1)	kW 0,04	0,04 0,05
Nom. electrical power consumption, heating2)	kW 0,04	0,04 0,04
Electr. nominal power consumption cooling1)	A	0,17 0,17 0,19
Electr. nominal power consumption heating2)	A	0,17 0,17 0,19
Refrigerant connection, injection pipe	Inches (mm)	1/4	1/4	1/4
Refrigerant connection, suction pipe	Inches (mm)	3/8	3/8	1/2
Condensation connection	mm	16	16	16
Dimensions Height	mm	250	250	280
Width	mm	750	750	815
Depth	mm	188	188	215
Weight	kg	8,5	8,5	10,0
Serial number		782... 780... 781...
Computerised part no.		1623205	1623200	1623210

1) Air intake temp. TK 27°C / FK 19°C, outdoor temp. TK 35°C / FK 24°C, max. air volume, 5m pipe length in combination with MVT 900 / 950 DC
2) Air intake temperature TK 20°C outdoor temperature TK 7°C, FK 6°C, max. air volume, 5m pipe length in combination with MVT 900 / 950 DC
3) Distance 1 m free air
4) Contains greenhouse gas according to Kyoto protocol

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