Roberts82
Free Member
- Messages
- 7
Chausson 2017. 718xlb
Our truma combi stopped working and showed an E122H fault. From the internet this appears to be a no diesel or low air flow fault.
After much hunting around to find the fuel pump we found the suction pipe fitted to a tee piece on the top of the fuel tank had one half of the tee piece snapped off. After a temporary repair the boiler will still not start. Over 10 resets and hard resets still no fuel. We checked for pulses to the pump and it appears there is no output from the boiler. In addition if we select water heating on electric the fault still appears and will not heat on electric. It seems strange that this fault code also stops electric water heating??
The suction pipe on top of the fuel tank is under the carpet under a hatch with a circular plastic cover protecting the top of the van sender unit. The snapped tee?? There is no sign anywhere of the second pipe or what it could possible used for or how in earth did it snap off. There is no sign of anything that could have caused this.
If you have any ideas we would be greatful.


Our truma combi stopped working and showed an E122H fault. From the internet this appears to be a no diesel or low air flow fault.
After much hunting around to find the fuel pump we found the suction pipe fitted to a tee piece on the top of the fuel tank had one half of the tee piece snapped off. After a temporary repair the boiler will still not start. Over 10 resets and hard resets still no fuel. We checked for pulses to the pump and it appears there is no output from the boiler. In addition if we select water heating on electric the fault still appears and will not heat on electric. It seems strange that this fault code also stops electric water heating??
The suction pipe on top of the fuel tank is under the carpet under a hatch with a circular plastic cover protecting the top of the van sender unit. The snapped tee?? There is no sign anywhere of the second pipe or what it could possible used for or how in earth did it snap off. There is no sign of anything that could have caused this.
If you have any ideas we would be greatful.

