Incidents And Solutions - DeDietrich GTU C 330 User Manual

8.3 Incidents and solutions

The burner is not working:
Check the boiler thermostat settings.
Carry out the checks mentioned in the burner instructions.
Shutdown by the safety thermostat due to accidental
overheating:
• Boiler: Check that the safety thermostat has not triggered. To
restart the boiler, reset the safety thermostat. Remove the safety
thermostat hood and press the reset button with a screwdriver.
• Condenser: Check that the safety thermostat has not triggered:
- Unscrew the protection cap
- Press the resetting button of the burner
Carry out the start-up operations again. Call your fitter.
Check the circuit breaker
16/01/2020 - 300017846-03
1
2
GTU C 330
The burner is operating but the radiators are cold:
Bleed the radiators.
Checking the hydraulic pressure. The hydraulic pressure must
be a minimum of 0.8 bars. Adjust the pressure if necessary,
avoiding a sudden influx of cold water into the boiler when it is
hot.
If it is often necessary to top up the installation with water,
contact your fitter.
Check that the heating pumps are working correctly
Check the position of the 3 position switch.
B3 control panel: TEST-STB/
DIEMATIC-m3 control panel: AUTO/
AUTO.
K3 control panel: AUTO/
Check the settings on the boiler thermostat(s).
8. Troubleshooting
/ on .
/TEST STB on
/TEST STB on AUTO
21