Autosleeper Kemerton xl / Sargent EC480

Try contacting Autosleeper direct they are/were when we had one of theirs very helpful and have their own workshop,their are normally SAS motor caravans at Broadway cc site en route to their factory

try contacting Sargent directly, they are more than happy to give technical help over the phone and to conduct 'real time' diagnostics while you are in the van.......

looking at Sargents web page, the EC480 Electronic Control Panel is only used by Auto Trail and Autosleepers.....i thought i didnt recognise it, our Boleros used much nicer (reliable?) ones.....

if it transpires you need a replacement, they will send it directly, no real need to get a dealer to do this job, swapping the unit over is simple....prise off the outside edge cover, unscrew the small screws holding the unit in place, ease off the unit and unplug the small connector...

unplugging the connector is also a know way of 'resetting' a unit that is playing up (like a computer reboot) perhaps you could try this and see if things improve.

otherwise, Sargent are one of the top companies for customer support and service, even contributing to some forums to assist with technical queries.

good luck.

As others have said Sargent have a good reputation for being helpful. There is also an AS forum if you have any further issues which is worth joining... 

http://www.autosleeper-ownersforum.com/

We had a problem with our Sargent control panel, as it wasn't correctly calibrated.  Neither AS nor the dealer were particularly helpful, and fobbed us off.  So we tried Sargent.  What a difference, the person on the other end of the phone knew exactly what the problem was, and talked us through re-calibrating the control panel.  It's worked fine ever since.

Of course it should have been correctly calibrated in the first place, but that's another issue.