E4 Error Code on Dometic Thermostat

Question

While we have found what the error code means, the manual shows nothing on how to "reset" or fix.

Dometic says, under warranty, take to dealer...Dealer says, hummm...I need to find out what this is... (are you KIDDING ME?).

Anyone have this issue and what did YOU do about it? I'm thinking this is just a simple "reset" of something!

mandalay_parr · Answer

On my 5 button unit hold down the top and bottom buttons and turn it on. It goes through a self check and shows FF if ok.

techwriter · Answer

If it's a CCC2, try this procedure.

gooselover · Answer

This is just a simple one zone thermostat...that has fan, cool and heat only.  I can't use either one of those procedures.  Darn.

old-biscuit · Answer

Remove the DC fuse for furnace........leave it out for 1 minute then re-install fuse. See if that clears the error code.

Sounds like you have one of the Dometic T-stats that have the 'outdoor sensor' without anything plugged into ambient sensor on main control board (A/C Unit)

dougrainer · Answer

There is no real reset on the Dometic Single zone tstat. Once you correct the "error", the error code goes away. Doug

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E4 Error Code on Dometic Thermostat

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