Lock Out Codes Cu-Gh-08 - REMEHA GAS 120 ACE Series User Manual

Code Display text
H03.05 Internal blocking
H03.17 Safety check
Tab.70
Code Display text
E00.04 TReturn Open
E00.05 TReturn Closed
E00.06 TReturn Missing
E00.07 dTReturn Too High
E01.04 5x Flame Loss Error
E01.11 Fan Out Of Range
7717201 - v03 - 25062019
Description/Solution
Gas Valve Control internal blocking occured:
Restart the boiler
Replace the CU-GH-08 control panel
Periodically safety check ongoing
11.2.3

Lock out codes CU-GH-08

If the blocking conditions continue, the boiler goes into lockout (also called
an error). The boiler will also lock out if an error is signalled anywhere in
the boiler. The error code appears in the main display and alternates with
a flashing red screen.
The meaning of the error codes can be found in the error table. Note the
error code.
Important
The error code is important for correct and fast tracing of the
nature of the error and for obtaining support from your supplier.
Description/Solution
Return temperature sensor is either removed or measures a temperature below range:
Bad connection: check the wiring and connectors.
Incorrectly fitted sensor: check that the sensor has been correctly fitted.
Faulty sensor: replace the sensor.
Return temperature sensor is either shorted or measures a temperature above range:
Bad connection: check the wiring and connectors.
Faulty sensor: replace the sensor.
Return temperature sensor was expected but not detected:
Bad connection: check the wiring and connectors.
Faulty sensor: replace the sensor
Return temperature difference is too large:
No circulation:
Vent the air from the heating system
Check the hydraulic pressure
If present: check the boiler type parameter setting
Check the circulation (direction, pump, valves)
Check that the heating pump is operating correctly
Check the cleanliness of the heat exchanger
Sensor not connected or incorrectly connected:
Check that the sensors are operating correctly
Check that the sensor has been correctly fitted
Faulty sensor: replace the sensor if necessary
5x Error of unintended Flame Loss occurance:
Vent the gas supply to remove air.
Check whether the gas valve is properly open.
Check the gas supply pressure.
Check the operation and setting of the gas valve unit.
Check that the air supply and flue gas discharge flues are not blocked.
Check that there is no recirculation of flue gases.
Fan speed has exceeded normal operating range:
Bad connection: check the wiring and connectors.
Faulty fan: replace the fan
Fan operates when it should not be operating: check for excessive chimney draught
11 Troubleshooting
MID _HMI T-control - Gas 120 ACE 83