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Trauma heater unit

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Trauma heater unit Empty Trauma heater unit

Post by Tengah74 on Fri Aug 07, 2020 5:52 pm

Problem. Tried the heater unit on mains power but no joy. The 240 switch in the compartment is not illuminated. Checked rcb’s all ok, mains power to everything else ok. Ok on gas. Any suggestions gentlemen, before it starts costing me money!!
Thanks
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Post by Gromit on Fri Aug 07, 2020 5:54 pm

Have you switched on the control panel? It won't work without a 12 volt supply.
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Post by Bad Penny on Fri Aug 07, 2020 6:21 pm

Check the fuse.
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Post by Tengah74 on Fri Aug 07, 2020 6:31 pm

Checked the fuse, although not the ones on the unit. Does have 12v to the control unit. Get a green light on when selecting gas at 40/60c. Gas heats the tank, no problem. Strange thing is that the 240v switched plug normally has a red light showing, not now.Without taking the cover of the plug, cannot confirm if power is going into from the consumer unit. The plug is strange also, cannot find any screws on it to remove to check. Rcb appears to work  okWhen I test it, but there I am a fuel and air pipes sort of bloke, no a electronic wizz kid.
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Post by Bad Penny on Fri Aug 07, 2020 6:43 pm

You say everything else in the van works on electric.
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Post by Tengah74 on Fri Aug 07, 2020 9:18 pm

Yes
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Post by Bad Penny on Fri Aug 07, 2020 11:07 pm

If still unsolved, give Truma a ring, they are supposed to be very helpful.
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Post by Mike187 on Sat Aug 08, 2020 12:35 pm

The 240v switch with the red light should have a fuse in it, have you checked that.

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Post by Tengah74 on Mon Aug 10, 2020 6:20 am

Thanks for all the comments. All this has come about checking everything in the van after a layup of nearly 9 months. Check the power in via the switch, power is ok in and out. NO red neon light. However it is heating water . I think when checking for power+gas together I picked the hottest day of the year to test. According to the manual, this is a winter operation. Therefore does the temp sensor in the hab part of the van inhibit this operation? I suspect it does but........Maybe will ring Truma. The confusion has been created by no neon light in the switch! Thanks
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Post by bolero boy on Mon Aug 10, 2020 9:00 am

if you are trying to test the heating of a Combi in temperatures we have had the last couple of days, the thermostat needs to be set to its highest....30 deg?
even that may not have been high enough to have been beyond what we have had this weekend.
you could test again in the cooler evening perhaps?
i dont know about your switches and their illumination but persuading a heater to fire up in 30 deg of heat might be tricky depending on the accuracy of the thermostat.
good luck.

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Post by Lucyc1937 on Mon Aug 10, 2020 9:44 am

I had this problem July this year, see 'Truma Water Heater Problem' on this forum, same symptoms, I to MH to Motorhome repairer who sent PCB to computer engineer who diagnosed it as a dry solder joint on PCB, this was fixed, MH back on road two days after problem found. Sargent quoted 5 to 10 day turn around plus delivery. Hope you get it fixed soon.
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