ac thermostat

[spendthrift]

with rear ac thermostat fan control set on auto when I switch actherm to cool compresser starts but fan doesent run so after few moments compressor shuts down. if I put thermostat switch on fan, fan runs so then I can put thermostat on cool and it will cool. what should I look for to solve problem why auto control on thermostat isn't allowing fan to run?

[BDWEAK]

I will need some further information. Has it always done this, or did it just start?
What make of thermostat?
What make of AC unit?
You also did not mention if the coach is still under warranty or not? I will assume not sense you are asking for help here.

A lot of different reasons for this: from incorrect installation (if new) to burnt part.

Will help if I can and pictures also help.

P.S. welcome to the forum.

[luvlabs]

Spendthrift,

Could you also post the year/model of your coach and who made your thermostat? The newer ones used are the RVComfort thermostats.

You can call Tiffin Service for some ideas or you could visit the Tiffin RV Network and see what the experts over there have to say.