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Four to Five button thermostat

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Tom and Pam Brown:
I would like to replace the 4 button thermostat to a 5 button thermostat on my 99 marguis.

It has Dometic A/C's has anyone done this and what is involved?
Thanks

Richard And Babs Ames:
We replaced the mechanical thermostats with the digital when we replaced the 13,500 Dometic AC only units with 15,000 Dometic Heat Pumps in our 1997 Patriot. We can switch from cool to heat from the heat pump or the Aqua-Hot. No new wiring was required. We had it done so do not have a wiring diagram.

Tom and Pam Brown:
Thanks for the reply.  The A/C works fine but the thermostat cuts on and off wiggling the case will turn it back on.
I only want to replace the themrostat and have a hurricane heater that works well.

Edward Buker:
Tom,

This website has download links to some service and trouble shooting manuals for both the 4 and 5 button Duotherm thermostats. There may be some info in these that may help. http://bryantrv.com/docs.html

Later Ed

Keith Moffett Co-Admin:

--- Quote from: Richard And Babs Ames ---We replaced the mechanical thermostats with the digital when we replaced the 13,500 Dometic AC only units with 15,000 Dometic Heat Pumps in our 1997 Patriot. We can switch from cool to heat from the heat pump or the Aqua-Hot. No new wiring was required. We had it done so do not have a wiring diagram.
--- End quote ---

Richard, When replacing the A/C with heatpump did you have to run new wires for the thermostat?  (I was told this was necessary)
Did you replace both units?  How well do the work for heat?
What kind of weight difference is there and what kind of cost was incured?
Thanks
Keith

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