Coachmen Concord 300TS UK based

[tuscancouple]

Hello Folks

We have a Coachmen Concord, from new, since 2008. It's a great RV for the smaller roads and campsites in Europe!

However we now have a problem which I hope someone could suggest a solution to or at least where to start looking. please:
Furnace, fridge control pannel and aircon are not working.
Furnace and fridge share a common fuse which is good with 12v on appliance side, all good.
Wired separately through a fuse and switch direct to the battery, then both fridge and furnace work ok.
I'm sure aircon would but I'm not waving 230v about in a field. We're on a campsite in Spain at the moment.
There is no voltage anywhere on the "Duo-Therm" control, which is the main control for the furnace and aircon.

Any clues as to where to start looking? It's still rather cool here at the moment so I had to make the heating work on a temp basis or get a divorce!

Whilst I have the handbooks and wiring diags for the individual items, fridge, furnace etc, I do not have a whole RV wiring diag, which at this point would be really useful. Does such a thing exist? The wiring layout under our bed is nearly identical to a plate full of spaghetti

Look forward to hearing from someone

Thanks

Mick

[Skip426]

Welcome to iRV2 , from WAY across the pond, and then some.
If you've by-passed wiring and things operate then your stuck with tracing the wires to find an open circuit, and I'm sorry but I can't help with the wiring harness route or location of any connectors you may have.
May be quicker and easier to run new wire.
As I tell anyone with wiring issues like yours , sometimes you have to be lucky to find the problem.
So best of Luck to you.
Hope some one with good advice chimes in soon.