1724DEB - Dimmer JUNG - Free user manual and instructions

Product Type	Dimmer (Rotary/Push)
Brand	JUNG
Model	1724DEB
Dimensions (HxWxD)	Approx. 71 x 71 x 42 mm (standard 55mm frame)
Weight	Approx. 100 g
Power Supply	230 V AC, 50/60 Hz
Max. Load	100-400 W depending on load type
Load Types	Incandescent, halogen, dimmable LED/CFL
Functions	On/off switching, stepless dimming, memory function
Operation	Rotary knob with push-button for on/off
Mounting	Flush-mounting (wall box)
Protection Class	IP20 (indoor use only)
Standards	CE, RoHS
Operating Temperature	-5°C to 45°C
Maintenance	Clean with a dry cloth; no liquids
Safety	Installation by a qualified electrician required
Spare Parts & Repair	Not user-serviceable; contact JUNG service
Warranty	2 years (refer to manual)

Frequently Asked Questions - 1724DEB JUNG

What types of bulbs are compatible with the JUNG 1724DEB dimmer?

The dimmer is designed for resistive and inductive loads. It works with incandescent, halogen, and many dimmable LED/CFL bulbs. Check the minimum load requirement (usually 3-10W for LEDs).

Can I install the 1724DEB dimmer myself?

For safety, installation should be performed by a qualified electrician in compliance with local regulations. The dimmer must be installed in a flush-mount wall box with proper wiring.

What is the maximum load for the 1724DEB dimmer?

The maximum load depends on the bulb type: for incandescent/halogen up to 400W, for dimmable LEDs typically up to 100W. Always refer to the manual for exact limits.

My dimmer is buzzing or humming. What should I do?

A slight hum may be normal with some LEDs. Try switching to high-quality dimmable LEDs. If the noise persists, check if the load is within the rated range and ensure proper ventilation.

Does the 1724DEB have a memory function?

Yes, it includes a memory function that retains the last dimming level when switched off. When turned back on, it returns to that level.

Can I use the dimmer with a fan or motor?

No, this dimmer is not suitable for motor loads like ceiling fans. Use only with resistive and inductive lighting loads.

What is the operating voltage and frequency?

The dimmer operates at 230 V AC, 50/60 Hz. It is designed for standard European mains supply.

How do I clean the dimmer?

Use a soft, dry cloth to wipe the surface. Do not use any cleaning agents or water, as they may damage the electronics.

Is the 1724DEB compatible with smart home systems?

No, this is a manual dimmer without smart connectivity. It operates via a rotary knob and push-button.

What is the warranty period for the JUNG 1724DEB?

JUNG offers a 2-year warranty from the date of purchase against manufacturing defects. Keep the purchase receipt as proof.

USER MANUAL 1724DEB JUNG

Universal dimmer LED, built-in

Art. no.: 1724DEB

Operating instructions

1 Safety instructions

Electrical devices may only be mounted and connected by electrically skilled persons.

Serious injuries, fire or property damage possible. Please read and follow manual fully.

Danger of electric shock. Always disconnect before carrying out work on the devise or load.

Danger of electric shock. Device is not suitable for disconnection from supply voltage. The load is not electrically isolated from the mains even when the device is switched off.

Risk of destruction if the set operating mode and load type do not match. Set correct operating mode when connecting or exchanging the load.

Fire hazard. For operation with inductive transformers, each transformer must be fused on the primary side in accordance with the manufacturer's instructions. Only safety transformers according to EN 61558-2-6 may be used.

These instructions are an integral part of the product, and must remain with the end customer.

2 Intended use

– Switching and dimming of lighting

- Dimmer mini universal LED: Mounting in appliance box according to DIN 49073 in combination with a suitable cover or mounting in surface-mounted housing

– Universal dimmer LED, built-in: Mounting in false ceilings

- Operation is performed using the 2-wire or 3-wire extension with button cover, rotary dimmer extension or push-button with NO contact

3 Product characteristics

– Device works according to the leading edge phase control or trailing edge phase control principle

- Automatic or manual setting of the dimming principle suitable for the load

– Display of the set operating mode by means LED

– Operation without neutral conductor possible

– Switch-on via bulb-preserving soft start

- Switch on with last saved brightness or saved switch-on brightness

- Switch-on brightness can be saved permanently

– Minimum brightness can be saved permanently

– Electronic short-circuit protection with permanent switch-off after 7 seconds at the latest

– Electronic over-temperature protection

i Power extension possible by means of power boosters.

4 Operation

Switch light

For operation via the rotary dimmer extension, see the operation manual for the extension.

■ Press the button cover or push-button briefly.

Adjust the brightness

Light is switched on.

■ Long press on button cover at the top or push-button. The light gets brighter up to maximum brightness.

■ Long press on button cover or push-button. Light gets darker to minimum brightness.

i Push-button: The dimming direction is changed with each new long actuation.

Switch light on with minimum brightness

■ Long press on button cover or push-button.

Save switch-on brightness

In the state as supplied, the switch-on brightness is set to maximum brightness.

- Set light to the required brightness. - Press the button cover over entire surface for longer than 4 seconds. Switch-on brightness is saved. For confirmation, the light is switched off briefly and switched on again.

i An push-button cannot be used to save the switch-on brightness.

Delete switch-on brightness

■ Press the button cover briefly: Light switches on at the saved switch-on brightness.

■ Press the button cover over entire surface for longer than 4 seconds. The switch-on brightness is deleted. For confirmation, the light is switched off briefly and switched on again. Switching on takes place at the last brightness value set.

i A push-button cannot be used to delete the switch-on brightness.

5 Information for electrically skilled persons

5.1 Fitting and electrical connection

DANGER!

Mortal danger of electric shock.

Disconnect the device. Cover up live parts.

Fitting and electrical connection

Figure 1: Connection diagram

(1) Button Dimm-Mode
(2) LED display
(3) 2-wire extension
(4) 3-wire, rotary dimmer extension
(5) Push-button, NO contact

Connect 600 W LED lamps or compact fluorescent lamps at most per 16 A circuit breaker. When connecting transformers, observe the data of the transformer manufacturer.
Our dimmers take into account the different electronic characteristics of most LED lamps found on the market. However, it cannot be guaranteed that in individual cases the desired results may not be achieved.

Operation without neutral conductor possible.

Only connect illuminated push buttons if they have a separate N terminal.

Figure 2: Clampable conductor cross-section

The light can be switched by briefly pressing the Dimming mode button (1).

Reset the overheating protection / short-circuit protection

■ Disconnect the dimmer from the mains supply.

5.2 Commissioning

Operating mode R, L, C, HV-LED, LED turns green

– Universal, preset at the factory
Automatic calibration to the load, dimming principle, trailing edge phase control, leading edge phase control or LED leading edge phase control
- Incandescent lamps, HV halogen lamps, dimmable HV-LED or compact fluorescent lamps, dimmable electronic or inductive transformers for halogen or LED lamps.

HV-LED, LED turns red

i The connection of inductive transformers is not permitted.

– LED trailing edge phase control

Incandescent lamps, HV halogen lamps, electronic transformers for halogen or LED lamps that can be dimmed according to the trailing edge phase control principle, dimmable HV-LED or compact fluorescent lamps that can be dimmed according to the trailing edge phase control principle.

HV-LED ☐, LED turns blue

i The connection of inductive transformers is not permitted.

– LED leading edge phase control

Incandescent lamps, electronic transformers for halogen or LED lamps that can be dimmed according to the leading edge phase control principle, HV halogen lamps or dimmable HV-LED or compact fluorescent lamps that can be dimmed according to the leading edge phase control principle.

Setting operating mode and minimum brightness

Precondition: Load is switched off.

■ Press the button Dimm-Mode (1) until LED (2) lights up.

LED	Dimm-Mode
GN (grün, green)	R,L,C,HV-LED
RD (rot, red)	LED
BU (blau, blue)	LED

Figure 3: Assignment of LED colour to dimming principle

• Keep briefly pressing button Dimm-Mode (1) until the necessary operating mode is selected.
  The LED (2) lights up in the colour of the selected operating mode (Figure 3).
  ■ Press the button Dimm-Mode (1) for longer than 1 second and keep it pressed.
  LED (2) flashes. Light switches on at the lowest brightness and slowly becomes brighter.

When changing the operating mode to universal, the calibration to the load is first performed. Keep the Dimm-Mode button (1) pressed.

■ Once the desired minimum brightness is reached, release the button Dimm-Mode (1).

LED (2) lights up, operating mode and minimum brightness are set.

If the minimum brightness was set too brightly, press the button Dimm-Mode (1) for longer than 1 second. Light switches again to the lowest brightness and slowly becomes brighter.

■ Save: Press the Dimm-Mode button (1) for less than 1 second or do not press for 30 seconds. The LED (2) goes out

Save switch-on brightness

If operation occurs using the dimmer or push-button, then the switch-on brightness is deleted or saved using the Dimm-Mode button (1). In the state as supplied, the switch-on brightness is set to maximum brightness.

■ Set light to the required brightness.
■ Press button Dimm-Mode (1) for longer than 4 seconds.

Switch-on brightness is saved. For confirmation, the light is switched off briefly and switched on again.

Delete switch-on brightness

■ Press the push-button briefly: Light switches on at the saved switch-on brightness.
■ Press button Dimm-Mode (1) for longer than 4 seconds.

The switch-on brightness is deleted. For confirmation, the light is switched off briefly and switched on again. Switching on takes place at the last brightness value set.

6 Technical data

Rated voltage AC 230 V\~

Mains frequency 50 / 60 Hz

Standby power approx. 0.3 W

Power loss approx. 2 W

Ambient temperature -5 ... +45 °C

Connected load at 25°C (Bild 4)

Figure 4: Connected load

Operating mode LED: Max. connected load for LED lamps typ. 3 ... 100 W, electronic transformers with LV-LED typ. 20 ... 100 W.

Mixed load

ohmic-capacitive 20 ... 210 W

capacitive-inductive not permitted

ohmic-inductive 20 ... 210 VA

Ohmic and HV LED typ. 3 ... 50 W

Ohmic and compact fl lamp. typ. 3 ... 50 W

i Power specifications including transformer dissipation.
i Operate inductive transformers with at least 85% nominal load.
Ohmic-inductive mixed load: Max. 50% proportion of ohmic load. Otherwise, an incorrect measurement is possible.

Operation without neutral conductor: Minimum load 50 W. Does not apply to loads with HV-LED and compact fluorescent lamps.

Power reduction

per 5°C in excess of 25°C -10%

when installed in wooden or dry construction walls -15%

when installed in multiple combinations -20%

Power boosters see power booster instructions

Number of extension units

2-wire, push-button unlimited

3-wire, rotary dimmer extension 10

Total length power cable max. 100 m

Total length of extension unit cable max. 100 m

Dimensions ∅×H 48×19.5 mm

7 Troubleshooting

Connected LED lamps or compact fluorescent lamps switch off in the lowest dimming position or flicker

Cause: The set minimum brightness is too low.

Increase minimum brightness.

Connected lamps do not switch on in the lowest dimming position or only after a delay

Cause: The set minimum brightness is too low.

Increase minimum brightness.

Connected LED lamps or compact fluorescent lamps flicker or buzz, no correct dimming possible, device buzzes

Cause 1: Lamps are not dimmable.

Check manufacturer's instructions.

Exchange lamps for another type.

Cause 2: Operating mode (dimming principle) and lamps do not optimally match.

Check operation in another operating mode, reduce connected load as well if necessary.

Set the operating mode manually.

Exchange lamps for another type.

Cause 3: Dimmer is connected without neutral conductor.

Connect neutral conductor if possible, otherwise exchange lamp for another type.

Connected LED lamps or compact fluorescent lamps in the lowest dimming position are too bright; dimming range is too small

Cause 1: The set minimum brightness is too high.

Reduce minimum brightness.

Cause 2: Operating mode (dimming principle) does not optimally match the connected HV-LED lamps.

Check operation in another operating mode, reduce connected load as well if necessary.

Set the operating mode manually.

Exchange HV-LED lamps for another type.

The dimmer switches the load off briefly and then on again.

Cause: short-circuit protection has tripped but now there is no longer a fault.

The dimmer has switched off and the load cannot be switched on again

Cause 1: overheating protection has tripped.

Disconnect dimmer from mains by switching off circuit breaker.

LED trailing edge phase control: Reduce the connected load. Exchange lamps for another type.

LED leading edge phase control: Reduce the connected load. Check operation in the LED trailing edge phase control setting. Exchange lamps for another type.

Let dimmer cool down for at least 15 minutes.

Switch circuit breakers and dimmer on again.

Cause 2: Surge protection has triggered.

LED trailing edge phase control: Check operation in the LED leading edge phase control setting, reduce connected load as well if necessary.

Exchange lamps for another type.

Cause 3: short-circuit protection has tripped.

Disconnect dimmer from mains by switching off circuit breaker.

Eliminate short-circuit.

Switch circuit breakers and dimmer on again.

i Short-circuit protection is not based on a conventional fuse, no metallic separation of the operational current.

Cause 4: load failure.

Check load, replace light bulb. For inductive transformers, check primary fuse.

LED lamp is dimly lit when dimmer is switched off

Cause: LED lamp is not suitable for this dimmer.

Use a compensation module, see accessories.

Use another type of LED lamp or an LED lamp of another manufacturer.

8 Warranty

The warranty is provided in accordance with statutory requirements via the specialist trade.

9 Accessories

Compensation module LED Art. no. KMLED230U

ALBRECHT JUNG GMBH & CO. KG

Volmestraße 1

58579 Schalksmühle

GERMANY

Telefon: [phone]

Telefax: [phone]

[e-mail]

www.jung.de