Trumatic C gas heater needing 12v power to operate??

[theteapackets]

Hello, have just got back from 3 days in Lincoln, based in the car park in the shadow of the Cathedral.

Came back to our Hymer B544 last night, switched stereo and lighting on and then noticed to our horror that the red light was flashing on the heating panel (which is gas only in our Hymer).

Thanks to my daughter's phone with internet we were able to find out that the flashing red light on the Trumatic C control panel probably meant the 12v was too low, so we sat playing scrabble by romantic candle light and the red light stayed off and the heating on!

Am I right in thinking that if our leisure battery went completely flat, that we would not be able to have the heating on? I can't find any trouble shooting info in our manual.

Many thanks
Tracey

 

[The Grand Wanderer]

Hello, have just got back from 3 days in Lincoln, based in the car park in the shadow of the Cathedral.

Came back to our Hymer B544 last night, switched stereo and lighting on and then noticed to our horror that the red light was flashing on the heating panel (which is gas only in our Hymer).

Thanks to my daughter's phone with internet we were able to find out that the flashing red light on the Trumatic C control panel probably meant the 12v was too low, so we sat playing scrabble by romantic candle light and the red light stayed off and the heating on!

Am I right in thinking that if our leisure battery went completely flat, that we would not be able to have the heating on? I can't find any trouble shooting info in our manual.

Many thanks
Tracey

You are correct in that if your leisure battery is flat your heating will fail. It needs 12 volts to run the control circuits and the fan that blows the warm air around the motor home. They use between 1.3 and 1.4 amps per hour when in use and about 0.01 amps at rest.
Wanderer

 

[John H]

You are correct in that if your leisure battery is flat your heating will fail. It needs 12 volts to run the control circuits and the fan that blows the warm air around the motor home. They use between 1.3 and 1.4 amps per hour when in use and about 0.01 amps at rest.
Wanderer

Hi

I don't know anything about the technology but is it not possible to have the heater on without the fan? On our Trumatic there is that option - it will, of course, mean that you have to gather round the heater to keep warm but is it not an option if the battery packs up completely?

John

 

[Deleted member 3011]

Many of these type of heaters have automatic ignition which requires 12V and also fan-forced combustion as well as the fan that distributes the heated air. They are also electronically controlled.

All require 12V power.

 

[John H]

Many of these type of heaters have automatic ignition which requires 12V and also fan-forced combustion as well as the fan that distributes the heated air. They are also electronically controlled.

All require 12V power.

Ours has automatic ignition but I didn't realise that it was also drawing power from the battery when the fan was switched off - thanks for that, I'll have to make sure we keep the battery topped up!

 

[Nosha]

The Truma will also run once then flash red if the Butane content is too high, as I found out when switching from red to blue to use up some blue bottles!!

And as others have said with no fan to remove the hot air it will also flash and cut out, you could have run the engine up for a while to charge the lesiure battery then the heating would have run ok.