Error Memory - REMEHA Quinta Pro series Installation, User And Service Manual

11 Troubleshooting
Error code Description
False flame signal
Gas valve error SU PCB
Fan operation error
Flow and return reversed
5x flame loss
Communication error with the
SU PCB
Communication error with the
SCU PCB
Blocking input in locked-out
mode
If present: HRU test fault

11.2 Error memory

68
Possible cause
Ionisation current measured
but no flame should be
present
Ignition transformer defec­
tive
Defective gas valve
The burner remains very
hot: O /CO too high
2 2
Bad connection
Defective SU PCB
Bad connection
Fan defective
Bad connection
Sensor failure
Sensor not connected or in­
correctly connected
Flow direction incorrect
No ionisation current
Bad connection
Bad connection
Defective SCU PCB
Bad connection
External cause
Incorrectly set parameter
Bad connection
External cause
Incorrectly set parameter
The boiler control unit has an error memory. It stores the last 16 errors that
have occurred.
In addition to the error codes, the following data is also saved:
Number of times that the error occurred: (
Boiler operating mode (
The flow temperature (
when the error occurred.
To view the error memory, you must first enter the access code
Check/solution
Check the ionisation/ignition electrode
Check the gas valve and replace if neces­
sary
Adjust O /CO settings
2 2
Check the wiring
Check the SU PCB and replace if necessa­
ry
Check the wiring
Replace the fan if necessary
Check for adequate draw on the chimney
connection
Replace the sensor if necessary
Check the flow (direction, pump, valves)
Check that the sensors are operating cor­
rectly
Check that the sensor has been fitted prop­
erly
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
Check whether the SU PCB has been correct­
ly fitted in the connector on the PCU PCB
Check the wiring
SCU Replace PCB
Check the wiring
Remove external cause
Check parameters
Check the wiring
Remove external cause
Check parameters
).
).
) and the return temperature (
123157 - v.06 - 24022015
)
.