Vaillant PCB VMW/VM/VU/VUW 242-5 / 282-5 Code TL-AD/39
Vaillant PCB, with the board code 'TC-AD TL-AD/39' and the marking 'Vaillant 2001 2'. It operates at 230V mains voltage with an auxiliary output of 21V. Suitable for assembly groups (Baugruppe) 71 2024/25/28 and 71 2026/27/29/30/31. The exact function of the board within the boiler is not specified in the material.
VAT included
Consult via WhatsAppVaillant boilers compatible with reference 0020034604
PCB with reference 0020034604. 14 verified compatibilities: VMW 240/2-3 and VMW 240/2-3 R1.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Vaillant VMW 240/2-3 | VMW (mixed turboTEC/turboMAX, wall-hung mixed) | Contrasted |
| Vaillant VMW 240/2-3 R1 | VMW (mixed turboTEC/turboMAX, wall-hung mixed) | Contrasted |
| Vaillant VMW 242/2-3 R1 | VMW (mixed turboTEC/turboMAX, wall-hung mixed) | Contrasted |
| Vaillant VMW 242/2-3 R2 | VMW (mixed turboTEC/turboMAX, wall-hung mixed) | Contrasted |
| Vaillant VMW 242-5 | VMW (mixed turboTEC/turboMAX, wall-hung mixed) | Contrasted |
| Vaillant VMW 280/2-5 | VMW (mixed turboTEC/turboMAX, wall-hung mixed) | Contrasted |
| Vaillant VMW 282/2-5 | VMW (mixed turboTEC/turboMAX, wall-hung mixed) | Contrasted |
| Vaillant VM 240/2-5 | VM (heating only) | Contrasted |
| Vaillant VM 242/2-5 | VM (heating only) | Contrasted |
| Vaillant VM 280/2-5 | VM (heating only) | Contrasted |
| Vaillant VM 282/2-5 | VM (heating only) | Contrasted |
| Vaillant VM 202/2-5 | VM (heating only) | Contrasted |
| Vaillant VMI 280-7 | VMI (compact interior) | Contrasted |
| Vaillant VMI 282-7 | VMI (compact interior) | Contrasted |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if ref. 0020034604 is the part for your boiler
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 0020034604. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the PCB 0020034604 resolves.
The PCB controls the ignition, modulation, and safety features of the boiler. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler shows no signs of life: no indicators, no display, and no attempt to start.
Cause: The PCB distributes the 230V power to the entire boiler; if it fails, no component receives current.
Measure with a multimeter that 230V is reaching the input terminals of the PCB before declaring it faulty.
- 02
The peripherals (sensors, gas valve, sensor) seem to be without power even though the boiler is on.
Cause: The PCB provides an auxiliary output of 21V to power these elements; if that output fails, they lose power.
Measure with a multimeter if there is 21V at the auxiliary output of the PCB before replacing it: if there isn't, confirm the fault at that specific point.
- 03
The display shows a code F followed by a number, which does not match any obvious fault of the boiler.
Cause: The Vaillant control unit interprets the signals from the sensors and generates a fault code F when something is off in that reading.
Check the manual for the VMW/VU/VUW 242-5/282-5 for that specific code: several F codes indicate the sensor or the pressure switch, not the PCB.
- 04
The fan or the pump does not start even though the boiler requests heat.
Cause: The PCB sends the electrical signal to these components at the right moment; if the driver for that output fails, they do not receive power.
Measure with a multimeter if voltage is reaching the connector of the fan or the pump during the demand, before changing the PCB.
Fault codes from Vaillant that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.63 | EEPROM error: fault in the configuration memory of the boiler's electronics. | The EEPROM physically resides on this main PCB; if the memory becomes corrupted or fails, the cause is the board itself. Verify: after a reset, the code persists and, with correct connections and sensors, the fault reproduces; confirm replacement of the board. |
| F.64 | Electronics error / NTC: fault in the electronics or short circuit in the flow/return NTC sensors. | When a short circuit in the NTC is ruled out (by checking sensors and wiring with a multimeter), the fault in the electronics processing those signals points to this main PCB. Verify: NTC and connections are correct but the fault code persists after reset = defective PCB. |
| F.65 | Temperature error in the electronics: the PCB is overheating. | The temperature sensor of the electronics itself detects excess heat on the PCB; if an external heat source or lack of ventilation is ruled out, the origin is a defect in the PCB. Verify: normal environment/ventilation but the code repeats = faulty PCB. |
| F.61 | Fault in the regulation/activation of the gas valve: the electronics cannot control the gas valve. | The PCB is the one that controls the gas valve; with wiring to ground, short circuit, and the valve itself ruled out using a multimeter, the remaining documented cause is the PCB. Verify: wiring and valve coils are correct but the code persists = defective PCB (the PCB is one of the causes, not the only one). |
| F.62 | Gas valve error due to delayed shutdown: delayed disconnection of the gas valve detected. | The PCB manages the closing/timing of the valve and the electrode signal; with the valve and detection electrode ruled out, the control electronics defect points to this PCB. Verify: valve and electrode are correct but the code repeats = PCB (concurrent cause with valve/electrode). |
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Data sheet for the Vaillant 0020034604 PCB.
- Catalogue reference
- 0020034604
- Brand
- Vaillant
- Type of part
- PCBs (control boards)
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- Manufacturer
- Vaillant
- PCB code (silkscreen)
- TC-AD TL-AD/39
- Additional screen printing
- Vaillant 2001 2
- Assembly groups (Baugruppe)
- 71 2024/25/28 and 71 2026/27/29/30/31
- Mains voltage
- 230V
- Auxiliary voltage
- 21V
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Vaillant VMW 242/2-3 R2 Manual (PDF)Document © Vaillant, provided as a technical reference.
Frequently asked questions about the PCB 0020034604
Does the PCB with code TC-AD TL-AD/39 work for the Vaillant VUW 282-5?
Who manufactures the PCB with code TC-AD TL-AD/39?
What voltage does this PCB of the Vaillant VMW 242-5 operate at?
Does this PCB also fit the Vaillant VUW 362/2-5?
Spare parts related to Vaillant VMW (combi turboTEC/turboMAX, wall-mounted combi)
