Vokera Pinnacle Combi fault COM
Appliance PCB communication lost
Gas boilerWhat it means
Signal indicating communication with the appliance PCB has been lost for more than 30 seconds. The boiler continues to operate but with no display or keys.
Likely causes
- PCB communication fault
- Display board wiring fault
Where to start
- Check wiring between display and main PCB
- Check PCB function
The full answer, free
- The manual page for this fault (page 8), 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 Pinnacle Combi. Check the model on the data plate before you order parts.
Other Vokera Pinnacle Combi fault codes
- E010Maximum number of ignition attempts
- E011Parasitic flame
- E041Low water pressure (temporary fault)
- E042Water transducer - LWCO error
- E050Smoke obstruction error low power
- E051Smoke obstruction error high power
- E055No card fan communication
- E056No communication microprocessor card
- E070CH probe error
- E071Heating temperature over limit
- E072Delta T return out of limit
- E077Absence of communication with low temperature thermostat
- E080Return probe error
- E082Warning delta temperature
- E091Primary heat-exchanger cleaning fault
- E095Calibration failed
- E096Lambda over limit
- E099Reset attempts exhausted