REMEHA Gas 310 ECO Technical Information page 47

Lack of ionisation during opera-
77
tion (after 4 restarts during 1
heat demand)
Boiler block temperature too
83
high
89
Gas leak VA1 (optional)
90
Gas leak VA2 (optional)
Air pressure differential sensor
91
fault
Boiler block temperature > flow
94
temperature + hysteresis
95
Temperature sensor fault
96
Temperature sensor fault
Boiler block temperature too
97
high
Other
Control unit fault
codes
table 22 Failure codes
Supplied By www.heating spares.co Tel. 0161 620 6677
- Flue gas recirculation. Check flue gas discharge system for installa-
tion faults and heat exchanger for possible leaks
- Insufficient air flow due to blockage
- Check the boiler settings.
Check:
- The heating pump is running
- There is sufficient water flow through the boiler
- The water pressure is > 0.8 bar.
The VPS gas leakage control unit has detected a leak. Check for exter-
nal leaks, otherwise replace gas valve multiblock.
The VPS gas leakage control unit has detected a leak. Check for exter-
nal leaks, otherwise replace gas valve multiblock.
Air pressure differential sensor fault during pre-ventilation (after 4
restarts).
Check the following:
- Is the air pressure differential switch defective
- Has the wiring short circuited
- Check for signs of external thermal draught in the flue gas discharge
duct.
Check:
- The heating pump is operating
- There is sufficient water flow through the boiler
- The water pressure is > 0.8 bar.
Short circuit of boiler block sensor.
Boiler shut-off sensor not connected or defective.
Check:
- The heating pump is operating
- There is sufficient water flow through the boiler
- The water pressure is > 0.8 bar.
Proceed as follows with all non-listed codes:
- Press reset once
- Check that the wiring is not short circuited
- If the fault persists, contact our Service Department.
48
Remeha Gas 310 ECO