Join Date: May 2005
Location: Exiled in Surrey
My Motorhome: Rapido 7066DF
Thanked 269 Times in 220 Posts
First thing to do is remove the remote panel from the wall. It only has a couple of small screws once you unclip the surround and will just come away from the hole in the wall with several trailing cables attached.
Turn the panel off before you start obviously.
Then check that all of the ribbon cable connectors on the edges of the PCB are properly pushed home.
Are the voltage figures that you quote those displayed on the panel or measured separately using a voltmeter at the battery terminals?
If "true" readings they seem on the high side and indicate that the batteries are under charge conditions (possibly from a solar panel?)
Before taking any further voltage readings, remove your hook-up (or turn the charger off) and disconnect any solar inputs.
Come back and let us know the voltage reading after you've done the above.
PS: Those CBE units can display very inaccurate and misleading readings, especially if they haven't been calibrated for a long time or if solar panels have been connected (via a regulator) directly to the battery instead of using the solar terminal on the control unit.
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