Truma D 4 error 122 H (2 Viewers)

[Westrow3]

Hi,

I have an error code of 122 showing on my diesel boiler. The manual suggests that snow, ice or a blockage could be covering the vents but they all look to be clear and clean.

Does anyone have any suggestions on how to clear this issue?

Thanks

 

[GeoffnDee]

In my diesel Truma combi code list the fault code 122 on a diesel combi states - lack of fuel due to low tank level , tank is empty and/or vehicle is on a slope. Could this be the cause ?

 

[Westrow3]

Thanks, I've just established that the fuel line to the boiler was hanging loose so explains why it's saying its got no fuel! I've reconnected and got the same error after it ran for a bit, I guess the pump needed to run for a while as it takes fuel from the main tank and the line was probably empty. Can smell some diesel though which I guess is a good sign.
Running it again now and it's been on longer without error, will give it 20 mins and see if the water gets hot!

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