Code
Display text
Description/Solution
E04.10
Unsuccessful start
5 Unsuccessful burners starts detected :
No ignition spark:
Check the wiring between the CU-GH-08 unit and the igniter.
Check the ionization/ignition electrode.
Check the earthing.
Check the surface condition of the burner.
Check the earthing.
SU PCB faulty: replace the PCB.
Ignition spark but no flame:
Vent the gas pipes to remove air.
Check that the air supply and flue gas discharge flues are not blocked.
Check whether the gas valve is properly open.
Check the gas supply pressure.
Check the operation and setting of the gas valve unit.
Check the wiring on the gas valve unit.
Replace the CU-GH-08 control panel
Presence of the flame but insufficient ionization (<3 µA):
Check whether the gas valve is properly open.
Check the gas supply pressure.
Check the ionization/ignition electrode.
Check the earthing.
Check the wiring on the ionization/ignition electrode.
E04.11
VPS
VPS Gas Valve proving failed
E04.12
False flame
False flame detected before burner start :
The burner remains very hot: adjust the O
2
Ionization current measured but no flame should be present: check the ionization/igni
tion electrode.
Faulty gas valve: replace the gas valve.
Faulty igniter: replace the igniter.
E04.13
Fan
Fan speed has exceeded normal operating range:
Bad connection: check the wiring and connectors.
Fan operates when it should not be operating: check for excessive chimney draught.
Faulty fan: replace the fan.
E04.14
Combustion Error
The burner temperature and setpoint differ more than 60s regarding GVC configuration
E04.17
GasValve Driver Err.
The driver for the gas valve is broken
E04.18
Min Temp Flow Error
The flow temperature is less than the minimum defined by the GVC parameter
E04.21
Burner temperature
Deviation in burner sensor 1 and burner sensor 2 detected
E04.23
Internal Error
Gas Valve Control internal locking
11 Troubleshooting
7717201 - v03 - 25062019
MID _HMI T-control - Gas 120 ACE
85
