RFZ - Thermostat ZEHNDER - Free user manual and instructions

Product type	Wireless remote control for ventilation system
Compatible models	CMFe R, WHR RF, ComfoAir RF, ComfoD RF, Santos RF
Power supply	CR2032 lithium battery
Battery life	Approximately 5 years (10 actions/day)
Buttons	4 buttons: Positions 1, 2, 3, and Timer
Timer	Short press: 10 min at position 3; long press (>2s): 30 min at position 3
Range	Wireless (RF) - standard range (not specified)
LED indicators	2 LEDs (red/green) to indicate operating status and programming
Wall mounting	By screws and wall plugs or adhesive strips (on smooth non-metallic surface)
Package contents	1 remote control, 1 CR2032 battery, 2 adhesive strips, 2 screws, 2 wall plugs, 1 manual
Maintenance	Clean with a dry cloth; replace battery if necessary
Battery disposal	Do not dispose of with household waste, deposit at collection point
Programming	Pairing with the ventilation unit receiver
Warranty	Not specified

Frequently Asked Questions - RFZ ZEHNDER

How to install the battery in the RFZ remote control?

Open the compartment on the back of the remote control. Insert the CR2032 battery respecting polarity: first the positive (+) side, then press the negative (-) side until it clicks into place.

How to replace the used battery?

Use a screwdriver to pry out the battery from the negative (-) side. Replace it with a new CR2032 battery. After replacement, the stored functions are preserved.

How to mount the remote control on the wall?

Fix the retaining plate A to the wall using screws and wall plugs (on flush-mounted box or directly) or glue it with adhesive strips on a smooth non-metallic surface. The 'TOP' indication must be at the top.

How to remove the remote control?

Slide the remote control with the frame about 5 mm upward to release the fixing claws, then carefully detach it. Never remove the frame without sliding it first, otherwise the retaining plate may be damaged.

How to program the RFZ transmitter with the ventilation unit receiver?

Turn the ventilation system off and then on. You have 10 minutes to program. Hold down buttons '1' and '⊗' for at least 6 seconds until both LEDs light up red then green. Then test the positions.

What do the LED indicators on the remote control mean?

Left LED short green: position 1 or 3. Right LED short green: position 2 or timer 3. Both red for 1 second: unit did not respond after several attempts. Both red alternating: adjustment mode without ventilation. Both green for 1 second: programming successful.

How long does the battery of the RFZ remote control last?

The battery life is approximately 5 years for a maximum of 10 uses per day. More frequent use reduces this time.

How to use the timer function?

Briefly press the '⊗' button to activate position 3 for 10 minutes. Press for more than 2 seconds to activate it for 30 minutes. The right LED lights up green.

What are the buttons and their functions?

Button '1': position 1 (low). Button '2': position 2 (medium). Button '3': position 3 (high). Button '⊗': timer (position 3 for 10 or 30 minutes).

What to do if the ventilation unit does not respond to the remote control?

First check the battery. If it's correct, proceed with a new programming: turn the system off and on, then hold down buttons '1' and '⊗' for 6 seconds until the LEDs flash green. If the problem persists, contact an installer.

USER MANUAL RFZ ZEHNDER

The CMFe R, WHR RF, ComfoAir RF, ComfoD RF and Santos RF can be operated remotely using a transmitter (RFZ). This has 4 buttons for setting the fan position. Position 1, position 2, position 3 and a time delay.

Before the receiver in the ventilation unit can be operated remotely, the transmitter(s) and receiver must be tuned to each other. The receiver can easily be retro-fitted to a ventilation unit without standard RF control. Once the 3-position switch / receiver combination has been fitted, the highest activated rpm is the benchmark. The receiver can simply be affixed or screwed to the wall.

The remote control is powered by a lithium battery (type: CR 2032). A new battery has a lifespan of about five years with a maximum of ten switch movements daily. Of course, the more often it is used, the shorter the lifespan.

Inserting the battery

Note: The cordless switch does not work if the battery has been fitted incorrectly. An incorrectly fitted battery can damage the electronics.

The battery must be fitted at the back of the switch. Insert the battery on the (+) side of the holder with the engraved plus (+) facing up, and then push the battery in place on the (-) side (fig. 1).

Battery replacement

Lift the battery out of the holder on the (-) side by means of a screwdriver (fig. 2). Saved functions are retained during battery replacement.

Note: Do not throw empty batteries out with the household refuse, but take them to your nearest collection point for chemical refuse.

Assembly

1. Use the screws supplied to fit locking plate A (fig. 3) to a flush outlet, or directly onto the wall using the screws and plugs. The 'TOP' marking should be visible at the top end of the locking plate.

You can also affix locking plate A (fig. 4) onto a smooth/level surface (no metal surface) by means of the self-adhesive strips (D).

1. Place cordless switch C (fig.5) into frame B, until it clicks into position.
2. Place the cordless switch and frame approx. 5 mm above locking plate A and lower it until it clicks tight into the fastening lugs of the locking plate. (fig.6)

Fig 3.

Fig 4.

Fig 5.

Fig 6.

Demounting

Fastening lugs hold the frame securely in the locking plate. Never pull the frame off without first lifting it upwards, otherwise you could damage the locking plate. (fig.7)

1. Slide the cordless switch and frame upwards by approx. 5 mm.
2. Now remove the switch and frame.

Fig.7

Operation

Functions for the user

Button Action Function description
1 Short	Position 1 (low)
2 Short	Position 2 (medium)
3 Short	Position 3 (high)
⊗	Short	Position 3, temporary 10 minutes.
	Long (>2 sec)	Position 3, temporary 30 minutes.

24 - EN

Functions for the fitter

Tuning the ventilation unit to the RFZ switch

As standard, 1 or more switches on 1 ventilation unit

1. Disconnect the ventilation system and then switch the power back on. You now have 10 minutes to program the unit.
2. Press "1" + button " " for at least 6 sec.
3. Both indicators turn red and then green. Tuning is complete. (the switch receives the address of the ventilation unit)
4. Test the 3 settings after programing the switch. For a second switch or further switches: repeat steps 1 to 4.

Multiple ventilation units on 1 switch.

1. Disconnect the ventilation system and then switch the power back on. You now have 10 minutes to program the unit.
2. Press “2” + button “ ” for at least 6 sec.
3. Both indicators turn red and then green. Tuning is complete. (the ventilation unit receives the address of the switch)
4. Test the 3 settings after programing the switch. For a second ventilation unit or further units: repeat steps 1 to 4.

Ventilation unit on 1 switch with an arbitrary address.

1. Disconnect the ventilation system and then switch the power back on. You now have 10 minutes to program the unit.

2. Press "3" + button " " for at least 6 sec.

3. Both indicators turn red and then green. Tuning is complete. (the ventilation unit R receives an arbitrary address of the switch)
4. Test the 3 settings after programing the switch.

LED indications

Left LED briefly lights up green: the ventilation unit has been set in position 1 or 3.
Right LED briefly lights up green: the ventilation unit has been set in position 2 or temporarily in position 3.
- Both LEDs light up red for 1 second: after a number of attempts, the ventilation unit has still not reacted.
- Both LEDs light up alternately red: The switch is in the fine-tune mode but the ventilation unit is not. Fine-tuning is therefore not possible. This alternate flashing continues for approx. 1 minute.
- Both LEDs light up green for 1 second: Tuning is complete.

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