Viessmann Vitodens 100 W PCB Ref. 7842194
RefurbishedViessmannPCBs (control boards)

Viessmann Vitodens 100 W PCB Ref. 7842194

95 €VAT includedIn stock · 10 units

PCB (control board): refurbished spare part that controls the ignition, modulation, and safety features of the boiler. Useful if the boiler does not ignite, locks out, or the display is unresponsive. Compatible with Vitodens 100-W B1HA, Vitodens 100-W B1KA (ref. 7842194). Includes a one-year warranty and delivery within 2–4 working days in the EU.

1
Consult via WhatsApp
Delivery in 2–4 working days
1-year warranty
14-day return
Technical support

Key Data

Reference
7842194
Brand
Viessmann
Type of part
PCBs (control boards)
Available units
10 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 7842194) equips these models. Verified compatibility; check the reference before purchasing.

Vitodens 100-W

  • Vitodens 100-W B1HA
  • Vitodens 100-W B1KA

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

CodeWhat does it mean?Cause and diagnosis (this part)
F0Burner blocked – internal fault.The PCB/control unit (VBC113) has an internal fault and locks the burner. Check power supply, fuse F4 T2.5A, and connectors; if it persists after the reset, replace/code the board.
FCBurner blocked – fan electrical control (control unit) faulty.The fan control stage integrated into the PCB fails and the board does not control/read the fan, causing a lockout. Check the wiring and fan signal; if there is no external defect, replace the PCB.
FdBurner blocked – burner control unit fault.Fault in the BCU/PCB that manages ignition and flame supervision; the boiler goes into lockout. Check electrodes/cables and possible EMC interferences; if it returns after reset, replace the PCB.
FFBurner blocked – burner control unit fault.BCU/PCB defect causing repeated burner lockout. After checking electrodes/cables and interferences, if the fault persists after the reset, replace the PCB.
E3Burner in fault state – fault in the safety chain.If after checking the thermal limit/wiring the safety chain is correct, detection by the PCB may be the cause; replace the control board if necessary after testing. Confirm safety continuity and rule out false contacts.
b7Emergency mode – burner control unit fault.BCU/PCB fault forcing emergency mode. Attempt reset; if it reappears, check power supply and connections; rule out external causes and, if confirmed, replace the PCB.
How do I know if this PCB is for my boiler?
Verify the reference 7842194 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.
What is it used for?
The PCB controls the ignition, modulation, sensor readings, and safety features of the boiler.
Is the boiler not igniting, locking out, or is the control board unresponsive?
After ruling out mains voltage, fuse, and connectors, a damaged PCB causes lockouts, blackouts, or erratic display. Repair the external cause before installing the new one.
Which models is it suitable for?
Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations
After installation, a technician must adjust the service parameters (type of gas, power settings) and check combustion and safety features.
What does refurbished mean and what coverage does it have?
Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Spare Parts Related Boiler Vitodens 100 W B1HA

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