Error code
Description
If VPS switch is present: 5 failed gas leakage checks:
Gas pressure non-existent or too low:
check whether the gas tap is properly open
check the gas supply pressure
Wiring fault: check the wiring
Incorrect setting of the VPS switch: check whether the VPS switch is set properly
VPS pressure switch not installed or poorly installed: check that the VPS switch is properly installed
Faulty VPS switch: replace VPS switch if necessary
Faulty gas valve: check the gas valve and replace it if necessary
False flame signal:
Ionisation current measured but no flame should be present: check the ionisation and ignition electrode
Ignition transformer faulty: replace the ignition transformer if necessary
Faulty gas valve: check the gas valve and replace it if necessary
The burner remains very hot: O
2
/CO
2
too high: adjust O
2
/CO
2
settings
Gas valve error in SU PCB:
Bad connection: check the wiring
Defective SU PCB: check the SU PCB and replace if necessary
Fan operation error:
Bad connection: check the wiring
Fan defective:
Check for adequate draw on the chimney connection
Replace the fan if necessary
Flow and return reversed:
Bad connection
Sensor not connected or incorrectly connected:
Check that the sensors are operating correctly
Check that the sensor has been fitted properly
Sensor failure: Replace the sensor if necessary
Water circulation in wrong direction: check the circulation (direction, pump, valves)
5x flame loss:
No ionisation current:
Vent the gas supply to remove air
Check that the gas valve is fully opened
Check the gas supply pressure
Check the operation and setting of the gas valve unit
Check that the air supply inlet and flue gas outlet are not blocked
Check that there is no recirculation of flue gases
Error in communication with SU PCB:
Bad connection: check whether the SU PCB has been correctly fitted in the connector on the PCU
PCB
Communication error with the SCU PCB:
Bad connection: check the wiring
Faulty SCU PCB: replace SCU PCB
Blocking input in locked-out mode:
Bad connection: check the wiring
External cause: remove external cause
Wrong parameter set: check the parameters
If present: Heat recovery unit test fault:
Bad connection: check the wiring
External cause: remove external cause
Wrong parameter set: check the parameters
11 Troubleshooting
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123157 - v.12 - 07022018
Содержание Quinta Pro 115
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