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  #1  
Old 09-05-2020
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SD-Jim SD-Jim is offline
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Default Dometic Royale lll Thermostat

[/ATTACH]Looking for a tech manual for my Dometic thermostats. I called Dometic and they didn’t have any info. The bedroom thermostat LED display occasionally flashes between the set temperature and AC. Looking. For some troubleshooting options. The AC does not work when the display is flashing.

TIA, Jim
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Old 09-06-2020
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Jim, try swapping the rear thermostat with the front thermostat. May have a broken wire or a loose connection.
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  #3  
Old 09-06-2020
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Check this out.. not sure if its the exact one you need.. but may get you close:
https://www.manualslib.com/manual/87...?page=4#manual

I am really not a fan of the thermostats these manufacturers use for roof airs.. they are proprietary and when they go out you cannot find them etc..
I ended up re-wiring the one on my travel trailer to use a regular house thermostat.. I can pick one up at any hardware store..
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  #4  
Old 09-06-2020
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Quote:
Originally Posted by giderich View Post
Jim, try swapping the rear thermostat with the front thermostat. May have a broken wire or a loose connection.
Dick, I swapped it out, and all is good for the rear AC.

Thanks again, Jim
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Old 09-06-2020
ddoster ddoster is offline
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I have the same thermostat. I am replacing
My ac,s and thermostats. I will try to keep them for you.
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  #6  
Old 09-07-2020
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Quote:
Originally Posted by 1984Lodge View Post
Check this out.. not sure if its the exact one you need.. but may get you close:
https://www.manualslib.com/manual/87...?page=4#manual

I am really not a fan of the thermostats these manufacturers use for roof airs.. they are proprietary and when they go out you cannot find them etc..
I ended up re-wiring the one on my travel trailer to use a regular house thermostat.. I can pick one up at any hardware store..
Jeff, thanks for the info on the air conditioner. Good idea, that you wired up a home T-stat for your trailer.

Thanks, Jim
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  #7  
Old 09-07-2020
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Quote:
Originally Posted by ddoster View Post
I have the same thermostat. I am replacing
My ac,s and thermostats. I will try to keep them for you.
Danny, what are you replacing your old a/c units with? Thanks for the offer on the T-stats, much appreciated.

Jim
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  #8  
Old 09-07-2020
ddoster ddoster is offline
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I am replacing with 13.5 Dometic's and new thermostats. I had them drop ship to National Refrigeration in Shipshewana, IN i have them installed on the 24 Sept. My front and back work. But I want to replace all at the same time.
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  #9  
Old 09-16-2020
NJWanderer NJWanderer is offline
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Quote:
Originally Posted by ddoster View Post
I have the same thermostat. I am replacing
My ac,s and thermostats. I will try to keep them for you.

I am in need of 2 also! all 4 of mine are bad. Id be happy to buy whatever Jim doesnt take if you want to get rid of them!
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  #10  
Old 09-16-2020
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I am replacing them on the 24th I will not
be back home till the Oct 5th I will be at
WOG rally.
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