F.27 Meaning
According to the installation and servicing instructions manual, “safety switch-off: Flame simulation”. Also according to other sources, “Incorrect Flame Detection Fault (Flame Detection Even Though The Gas Valve Is Off)”
Cause of F27
According to the installation and servicing instructions manual. there is moisture on the electronics, electronics (flame monitor) defective, gas solenoid valve leaking. According to vaillant the causes are as follows.
- Damage On The Electrode Or The Ignition Lead
- Moisture Present On The Electronics
- Fault On The Spark Generator
- Fault On The Main PCB
Part Nos
