Locking - REMEHA Quinta Ace 30 Installation And User Manual

10 Troubleshooting
Code Display text
H03.00 Parameter Error
H03.01 CU to GVC data error
H03.02 Flame loss detected
H03.05 Internal blocking
H03.17 Safety check
Tab.45 Locking codes
Code Display text
E00.04 TReturn Open
E00.05 TReturn Closed
E00.06 TReturn Missing
58
Description
Safety parameters level 2, 3, 4 are
not correct or missing
No valid data from CU to GVC
received
Measured ionisation current is below
limit
Gas Valve Control internal blocking
occured
Periodically safety check ongoing
10.1.3

Locking

Description
Return temperature sensor is either
removed or measures a temperature
below range
Return temperature sensor is either
shorted or measures a temperature
above range
Return temperature sensor was
expected but not detected
Solution
Parameter error: security kernel
Restart the boiler
Replace the CU-GH
Communication error with the CU-GH:
Restart the boiler
No flame during operation:
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
Security kernel error:
Restart the boiler
Replace the CU-GH
Restart the boiler
Replace the CU-GH
Solution
Return temperature sensor open:
Bad connection: check the wiring and connec­
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Faulty sensor: replace the sensor
Return temperature sensor short-circuited:
Bad connection: check the wiring and connec­
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Faulty sensor: replace the sensor
No connection to temperature return sensor:
Bad connection: check the wiring and connec­
tors.
Faulty sensor: replace the sensor
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