COLEMAN THERMOSTAT PROBLEM

Several owners report a "no hear" problem in their coaches equipped with a Coleman thermostat.   Nothing appears on the screen no matter which buttons are pushed.   Although this appears to be a power / fuse problem, this is not the case.

The cause is most likely a defective thermostat.   This can be verified if the thermostat starts working when the inside temperature rises above approx 40 degrees.