Vaillant PCB Control VMI ES 32 362 7 R3 Ref. 0020034604
The Vaillant VMI ES 32 362 7 R3 Control PCB Ref. 0020034604 is used in Vaillant boilers from the VMI range, among others. This control PCB manages the ignition, burner modulation, pump, and safety features of the boiler. When it fails, you may notice that the boiler does not start, locks out, or behaves erratically. It is compatible with models such as the VMI 280-7 and VMI 282-7, as well as several models from the VMW and VM ranges. It should be replaced when errors such as F.63, F.64, or F.65 occur.
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 does not turn on when the switch is pressed.
Cause: The control board prevents ignition commands from being sent to the components.
Check that the differential in the house has not tripped before inspecting the PCB.
- 02
It smells burnt near the boiler and then it stops working.
Cause: A relay or damaged component on the PCB can overheat and stop functioning.
With the boiler turned off and unplugged, check the PCB for dark marks or signs of melting.
- 03
The domestic hot water comes out lukewarm or irregular, even though the gas and water supply are fine.
Cause: The PCB regulates the flame modulation; if it fails, the power output varies uncontrollably.
Check that the water flow and the pressure of the installation are correct.
- 04
The boiler makes a click when trying to ignite but does not start.
Cause: That click is usually the relay on the PCB trying to switch unsuccessfully.
Listen for the click if it repeats several times in a row, this helps to describe the fault to the technician.
- 05
The programming or time is lost every time there is a power outage.
Cause: The PCB stores that data in its internal memory; if the backup fails, it is erased with each outage.
Check if the problem occurs consistently with supply interruptions before considering the PCB as faulty.
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
- 5 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- 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.
- Connection strip (central area, silk-screened)
- 230V and 21V
- Position/lot mark on relay (sticker)
- J55
- The '230V'/'21V' terminal block and the 'J55' sticker are manufacturing marks on the PCB itself (connection voltage and position/lot), not a manufacturer code or spare part reference.
- Compatibility with the indicated models is the confirmed information from this sheet; 'J55' is not sufficient to confirm that it is the exact reference you need.
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
What does the brand 'J55' that appears on this PCB mean?
Is this PCB compatible with boilers from the VMW range?
How many models are compatible with this PCB?
What fault codes are documented for this PCB?
Is this PCB suitable for the VM range?
What is the reference for this PCB?
Spare parts related to Vaillant VMW (combi turboTEC/turboMAX, wall-mounted combi)
