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Replacement roof AC

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Reese Hunt:
I am a little late as usual, yet this info may be useful.

I replaced both roof top Dometic 13k original units with RV AC 15K Houghton, Bellaire 3600 heat pumps.
They are very quiet, variable speed and require only 120vac connections. The controls are remote or on the unit.
Mine were for ducted installation and required a little duct board fabrication. They fit the standard 14x14 hole.
Our coach is 40’ and sitting in 100+ degree, direct Sun, is staying very cool.
These units are made in Australia and sold by Rec-Pro.

Fred Cook:
Replaced my front AC last month with a Dometic Penguin II 13.K, Model 640315CXX1C0. Dometic said it was a direct replacement for my 2002 unit. Was able to plug directly into the controller and did not need to change out the thermostat which also controls the Aqua hot furnace settings. Believe you should be able to accomplish the same.

Bob Stone:
I have two Dometic Penguin 2 DuoTherm A/C's on my 2005 Monterey. The front unit is a 15,000 BTU combination air conditioner/heat pump. On a recent trip the A/C started blowing “hot” instead of “cold”. This is a symptom of a failed Reversing Valve. The default is for the unit to go to Heat mode.


The local RV Dealer just wanted to replace the unit without even looking at it. I ordered a new solenoid  coil for the reversing valve on Amazon (they were in short supply for a while). I installed the new coil yesterday and the unit is now blowing cold but the rear unit fails to even turn on. Hopefully just requires a “Reset” on the thermostat. A $200 part instead of a $2,000 new A/C plus 2 new thermostats plus labour.


Update: Yep, a simple thermostat 'reset' got both A/C working as they should.

Al Postma:
Bob,
How do you reset the thermostat?

Bob Stone:

SYSTEM RESET


a. Turn the ON/OFF switch to “OFF” position.


b. Simultaneously depress and hold the MODE and ZONE push-buttons while turning the ON/OFF switch to “ON”. FF should appear in the LCD display until the MODE and ZONE push-buttons are released.


c. When a dip switch is turned on or off after initial configuration, a system reset will need to be done before the Comfort Control Center TM will recognize the updated selection.

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