Truma 4e Combi - no power

[Gellyneck]

We've got the above unit in our motorhome, a 2013 AT Frontier Savannah.
The control panel for it is showing no lights despite having worked for a few minutes before they went out.
This is symptomatic of no power to the boiler.
I've checked the 12v fuse on the boiler for continuity and it's OK.
Will be checking the rest of the power circuit tomorrow but haven't been able to find the fuse that covers this in the 12v system.
Anybody any idea of what one \ where it is?

 

[GeoffnDee]

Could the outlet be blocked causing it to shutdown ?

 

[Gellyneck]

Could the outlet be blocked causing it to shutdown ?

Don't think it's a blockage. No lights on the control panel tends to mean it's not getting power from the boiler so think it's electrical (or it's comms cable).

 

[Kiters74]

Could it be the frost stat has kicked in and emptied the water making it cut off?

 

[irnbru]

We've got the above unit in our motorhome, a 2013 AT Frontier Savannah.
The control panel for it is showing no lights despite having worked for a few minutes before they went out.
This is symptomatic of no power to the boiler.
I've checked the 12v fuse on the boiler for continuity and it's OK.
Will be checking the rest of the power circuit tomorrow but haven't been able to find the fuse that covers this in the 12v system.
Anybody any idea of what one \ where it is?

Pay your bill and buy some gas you cheapskate

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[BouncyBoatFolk]

No fault code ? There is also a 240v fuse, if you have the manual it should show it in there, but they can be a mare to get at reputably. However, not sure if that would only affect the "e" side of heating, 12v should still give you gas heating and hot water.

 

[GeoffnDee]

The Truma troubleshooting guide states that if there is no LED on, the automatic restart may need resetting, this is done by switching off waiting 5 seconds and then switching on again. This may be worth trying , if you have not done so already.

 

[Gellyneck]

Pay your bill and buy some gas you cheapskate

Rearrange the following into a well known phrase or saying!
Geoff Grub!

 

[Gellyneck]

The Truma troubleshooting guide states that if there is no LED on, the automatic restart may need resetting, this is done by switching off waiting 5 seconds and then switching on again. This may be worth trying , if you have not done so already.

Keep them coming but tried that half a dozen times!

 

[Gellyneck]

Could it be the frost stat has kicked in and emptied the water making it cut off?

No, the boiler was full and then subsequently manually drained down.
I'm 99% certain it's no 12v to the boiler.

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[GeoffnDee]

If your PSU is a400/ 450 type, number 5 fuse (10 amp) is for extractor fans/heating systems. (From Sargent website)

 

[Gellyneck]

If your PSU is a400/ 450 type, number 5 fuse (10 amp) is for extractor fans/heating systems. (From Sargent website)

It's an EC500 \ 480.

 

[Gellyneck]

Rearrange the following into a well known phrase or saying!
Geoff Grub!

Took you long enough to like.

 

[Gellyneck]

The Truma troubleshooting guide states that if there is no LED on, the automatic restart may need resetting, this is done by switching off waiting 5 seconds and then switching on again. This may be worth trying , if you have not done so already.

Keep them coming but tried that half a dozen times!

Go to the top of the class that man! (Leave your books at the back, right enough, 'cause you may be back at the back in a minute!
Despite trying the auto restart reset at least half a dozen times went into the van today, brought it out of shutdown powered up the 12v system and turned the boiler on. The bl**dy control panel lights up! . Tried half a dozen times more and still lights up!

So, external locker lock replaced, the "mandatory but optional" scuttle water evacuation trough and pipe fitted and a wee bit of oiling done.
Off to get her fuelled up for departure next week. When the boiler won't be working again!


Edit : you can stay down the front of the calls GeoffnDee .
Took motorhome out, filled with fuel and returned to storage and, wait for it, it appears the boiler is still working.
Not tried it in earnest yet as no water in it but at least the control panel dials are lighting up.

 

[Vipar]