Vokera Intermittent Lockout / Unstable Operation

Furnace frequently locks out and requires manual reset, with varying codes or no code

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Intermittent gas supply, Loose electrical connections, Failing PCB, Fluctuating mains voltage

Safety: Do not repeatedly reset a locking-out furnace without understanding the cause.

Record error codes: Note any codes shown before reset to help diagnosis.
Check gas supply consistency: Observe whether other gas appliances are affected at the same time.
Inspect connections: With power OFF, gently press on all plug-in connectors on the PCB, fan, gas valve, and sensors to ensure they are seated.
Professional diagnosis: A technician should check supply voltages, earth quality, and component operation.

Hard 4/5

Main Control PCB

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