67
13.1 Error Messages and Resetting the Boiler
Error Description Operation
09 Gas valve connection fault Check cable PCB/gas valve and gas valve plug
10 Outdoor sensor fault Check sensor and cable
15 Gas valve command fault Verify all cables. Replace PCB.
20 Central Heating NTC sensor fault Check sensor and cable
28 Flue NTC heat exchanger sensor fault Check sensor and cable
40
Return NTC sensor fault Check sensor and cable
50 Domestic Hot Water NTC sensor fault Check sensor and cable
53
Calibration, Poor gas quality
quality.
55 PCB not programmed
Follow instructions provided with control board replacement kit,
call technical service for assistance.
E72/E92
Combustion test alarm during commissioning /
calibration
gas quality. Perform automatic calibration function and manual
calibration function if necessary.
78 Minimum gas valve IMOD current
Check gas supply pressure
Check the correct position and integrity of the sensing electrode
Check and clean the igniter and sensing electrode if necessary
Auto calibrate, manual calibrate if necessary
Replace components if all else fails
79 Maximum gas valve IMOD current
E83 OT Communication Failure
Check OT connection, remove power, reconnect OT
connections, if problem persists replace service key.
84-85
86-87
Communication problem between boiler board and
control unit
Probable short circuit on wiring.
Check cable between control unit and boiler
109
Pre-circulation alarm (temporary fault)
Check correct circulation of water and pump. Check supply and
return wiring is correct.
110
Safety thermostat tripped due to over temperature
(pump probably blocked or air in heating circuit)
Check safety thermostat and cable; check correct circulation of
water and pump
117 Hydraulic pressure too high.
Relieve pressure via relief valve or drain. Ensure water feed is
operating correctly.
118 Hydraulic pressure too low.
125
No circulation of water
(control performed via temperature sensor).
Check correct circulation of water and pump.
Check correct connection of NTC sensor on pipe
128
proving stage.
continuity between burner and ground, gas pressure, gas
function if necessary.
130
Check thermostat, correct circulation of water and pump.
Check status of primary exchanger.
131
Thermo fuse tripped due to over temperature or
the board, or wire harness may be cut.
Check thermo fuse, correct circulation of water and pump.
Check status of primary exchanger. Replace heat exchanger.
Verify wire harness installation and continuity.
133
Ignition failure
Check correct operation of condensate trap. Check
recirculation, electrical continuity between burner and ground.
calibration and manual calibration function if necessary.
134
Gas supply valve blocked
Check gas pressure, sensing electrode, spark electrode and
cable, replace PCB if it necessary.
13 - TROUBLE SHOOTING
240013360
REV A [07/01/2021]
To Next Page
Loading...
