Vokera Vibe fault SFS
STOP FOR SERVICE (permanent inhibition)
Gas boilerWhat it means
SFS (STOP FOR SERVICE) signal indicates the permanent inhibition of all requests for heating and domestic hot water, triggered when parameter 706=1 and parameter 707=0. This is not resettable.
Likely causes
- Service deadline exceeded (parameter 707)
- Fixed operating period for service call (parameter 707) has reached 0 with function mode 706=1
Where to start
- Check parameter 706 setting (must be 1 for this behavior)
- Check parameter 707 value - SFS appears when 707 = 0
- Observe water pressure icon flashing on display to confirm high efficiency mode is running
The full answer, free
- The readings and component tests from the manual
- How to put it right, step by step
- The manual page for this fault (page 32), right under the answer
Safety: Isolate gas and power before you open the case. If you have been into the gas side, do a tightness test, and a combustion and flue check before you hand back. Gas Safe (UK) or RGI (Ireland) work only.
From the Vokera manual for the Vibe. Check the model on the data plate before you order parts.
Other Vokera Vibe fault codes
- A10Flame lockout / condensate drain obstructed / flue gas exhaust/air suction obstructed
- A30Fan fault
- A40Fill the system
- A41Fill the system (transitional)
- A59High power supply voltage
- A60DHW probe fault
- A70Flow sensor fault / flow sensor overtemperature / flow/return sensor differential
- A80Return probe fault / return probe overtemperature / return-flow sensor differential
- A90Flue gas probe fault
- A91Reset operating hours counter (related to fault A91)
- AF1Heating anti-freeze protection active
- AF2DHW anti-freeze protection active
- CFSService call signal / periodic boiler control
- E091Heat exchanger cleaning required (unusual usage threshold)