Viessmann Vitopend 100-W WH1B Control PCB

Viessmann boilers compatible with reference 7831047

PCB with reference 7831047. Three confirmed compatibilities: Vitopend 100-W WH1B and Vitopend 100 WH1B 24 kW.

Proven compatibility

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. 7831047 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.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference 7831047. If it is not visible, do not identify the part from its shape alone.
2. Check the full boiler model on its data plate and look for it in the model associations on this page.
3. Compare the connections and physical body with the original part before installation.
4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.

Symptoms and faults that the PCB 7831047 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 displays a fault code on the screen that does not match actual faults of the components.

  Cause: The control board incorrectly interprets the signals from the sensors and generates an internal fault code.

  Note the exact code that appears on the screen and compare it with the manual before considering that the PCB is faulty.

• 02

  The remote control or the display is not responding, although the boiler seems to be receiving power.

  Cause: Communication between the PCB and the control panel has been lost.

  Check the wiring of the communication bus between the PCB and the display before replacing the PCB.

• 03

  The boiler heats the domestic hot water but does not start the heating, or vice versa.

  Cause: The PCB manages both circuits independently and can fail in only one of the two outputs.

  Check that the three-way valve moves physically before assuming that the fault is with the PCB.

• 04

  The boiler turns off and on by itself for no reason, as if it is resetting.

  Cause: An intermittent fault in the PCB causes micro-cuts that reset the electronics.

  Check that the power outlet and the power cable do not have a loose connection before replacing the PCB.

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 Viessmann 7831047 PCB.

Catalogue reference

7831047

Brand

Viessmann

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.

Code printed on PCB (photos 1-2)

PCB005042 R02 (ambiguous reading; possibly PCBD5042 R02)

Code printed on PCB (photos 3-4)

PD0069KE R02

Power connectors (blocks T17, T18, T5, T4)

35 / 20 / 100