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Ken wylie

Truma combi boiler only working on Gas not on Electric

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Hi, Anyone had this problem I have checked fuses and the reset button but still only works on Gas Dealer not really sure or interested need a recommendation for truma boiler repair I suspect it’s a circuit board but everyone I speak to says it needs a new boiler but it works fine on gas just can’t regulate as easy as on Electric and costing more with Gas . Thanks Ken 

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Your hard earned was paid to the dealer so they have an obligation to sort this out. How long have you had it?

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Posted (edited)

This may sound silly, but have you plugged in the the Electric Hook Up cable and turned on the supply/ checked the trips have not tripped and turned on the master switch.

 

Some new owners think that everything can be powered off the battery.   The combi will not run on just battery electric, it needs to be connected to the mains electricity supply.  

 

No mains electric, then it only works on gas and then only if the battery is connected and charged.  

 

You also have to select EL1 or EL2 on the display to get it to work on electric.

Edited by Wunny
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Hi from what I know it's not an uncommon problem, I had the same with ours mid winter.

Trumas response was EHU supply must have caused it but the other vans on same supply had no troubles.

What our was there is a fuse hidden internally under a cover of boiler, Truma said specialist fitter only can change it luckily ours was still under warranty but a long way from supplying dealer, found a local Truma approved caravan workshop who fixed it and bill supplying dealer, hope this helps, Happy New Year macaw 

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Truma seem to be very helpful when they see questions about their product range from contributors to this forum.

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2 hours ago, WispMan said:

Your hard earned was paid to the dealer so they have an obligation to sort this out. How long have you had it?

 

Hi over 5 years now so out of warranty unfortunately 

It is on EHU and checked all fuses trip switches reset button etc not sure what display you mean though for EL 2 ? Thanks for all replies 

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28 minutes ago, Ken wylie said:


not sure what display you mean though for EL 2 ?

Do you have a control panel like this: click to watch

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The 240V overheat trip could be the problem.   click the link here: and see page 8

 

Overheating protection 240 V, located under plastic panel

The operation of the overheating protection 240 V indi-

cates a possibly dangerous situation. Do not reset the

overheating protection 240 V until the water heater has been

serviced by a qualified person.

The 240 V heating facility has a mechanical overheating

switch. If the 12 V power supply is interrupted during opera-

tion or during the after-run period, for example, the tempera-

tures within the unit could activate the overheating protection.

Fig. 7

To reset the overheating protection, allow heater to cool,

remove connection cover and press red reset button.

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No not the same, my control panel is this one I have looked on you tube and all are different to mine 

5574A4CA-E789-469B-8B49-D62F58E17A7C.jpeg

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Yes thanks tried this reset before but will recheck in line fuse and reset again when back home not got multimeter with me now Thanks again for all replies. Also emailed truma direct from here so will wait and see 

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