WB369hut246tubilCANE125 said:
Good Morning EH52ARH... I have tested the Water Heater with the mains 240 volt connected.D.C Volts at present 13.7.. tried it over & over again. I even turned the supply off to W.Heater to allow it to reset.
The GAS does ignite, but only stays on for 5 to 10 seconds then trips
Thanks ...Brian
Hello Brian,
Based on the symptoms you describe, the appliance ignites the gas, but the system seems not to recognise the flame and so trips out.
I don't think Truma will have changed the fundamental mechanical design of the Trumastore heater since I last worked on one in about 2000. In which case it will have a circular burner and it won't have a pilot light.
There is no gas metering to reduce heat input .The system uses a full cycle controller that either has the ON or OFF, and it automatically ignites the flame when heat is needed.
The burner is 90% of a circle, and the ignition electrode will start the flame at one end, and the flame proving probe is at the other end, so the flame has to start at one end and make it all the way to the other end for it to be detected.
As the flame is not being detected I would first suspect the flame has not fully lit around the burner. This could be down to a blockage in the burners, a spider's web for example.
Secondly I would suspect the control boards flame proving or detection circuit.
Either way the heater has to be dismantled to check, and I would suggest you leave it to a workshop or engineer with Truma expertise.