REMEHA Quinta Ace Installation, User And Service Manual page 70

12 Troubleshooting
Code Text display
E02.47 Failed Connecting Function Groups
E02.48 Function Group Configuration Fault
E02.51 Parameter error from the Gvc
E02.52 Gvc Burner Profile Error
E04.00 Safety parameters Level 5 are not correct or missing
E04.01 Flow temperature sensor is either shorted or
measuring a temperature above range
E04.02 Flow temperature sensor is either removed or
measuring a temperature below range
E04.03 Measured flow temperature above savety limit
E04.04 Flue temperature sensor is either shorted or measuring
a temperature above range
E04.05 Flue temperature sensor is either removed or
measuring a temperature below range
E04.06 Measured flue temperature above limit
E04.07 Deviation in flow sensor 1 and flow sensor 2 detected
E04.08 Safety input is open
E04.09 Deviation in flue sensor 1 and flue sensor 2 detected
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Possible cause/check
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Safety parameters not OK:
Bad connection: check the wiring and connectors.
Flow temperature sensor short circuited:
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has
been correctly fitted.
Faulty sensor: replace the sensor.
Flow temperature sensor open:
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has
been correctly fitted.
Faulty sensor: replace the sensor.
No flow or insufficient flow:
Check the circulation (direction, pump, valves).
Check the water pressure.
Check the cleanliness of the heat exchanger.
Flue gas temperature sensor short-circuited:
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has
been correctly fitted.
Faulty sensor: replace the sensor.
Flue gas temperature sensor open:
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has
been correctly fitted.
Faulty sensor: replace the sensor.
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Flow temperature sensor deviation:
Bad connection: check the connection.
Faulty sensor: replace the sensor.
Air pressure differential switch activated:
Bad connection: check the wiring and connectors.
Pressure in flue gas duct is or was too high:
Non-return valve does not open.
Siphon blocked or empty.
Check that the air inlet and flue gas discharge
flues are not blocked.
Check the cleanliness of the heat exchanger.
Flue gas temperature sensor deviation:
Bad connection: check the connection.
Faulty sensor: replace the sensor.
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