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11-08-2018, 06:45 PM
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#1
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Junior Member
Brand: Thor Motor Coach
Model: Pallazo
State: Washington
Posts: 3
THOR #13679
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Dometic thermostat E1 error
The thermostat shows the E1 error, the fan, ac and the furnace won’t work. The power, fuses and circuit breakers all seem to be ok. Does anyone know what the problem may be? This is a 2013 Thor Palazzo
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11-08-2018, 06:56 PM
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#2
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Senior Member
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
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You have two identical post going here on this same issue...be sure to check both of them. Remove rooftop shroud and check all wiring terminations...especially the green ground wire. Remove wires and clean contact surfaces.
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Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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11-08-2018, 08:31 PM
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#3
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds
State: Ontario
Posts: 265
THOR #9081
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Loss of communication between the thermostat and module board. Here is the manual for your thermostat.
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2018 Four Winds 31Y
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11-08-2018, 10:55 PM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
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I read all that too Peterrr...lots of chatter going on. Another guy had same issue and tracked it down to deteriorated exterior wiring.
__________________
Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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11-09-2018, 02:55 PM
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#5
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Junior Member
Brand: Thor Motor Coach
Model: Pallazo
State: Washington
Posts: 3
THOR #13679
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Dometic thermostat E1 code
The furnace and roof ac unit are 2 separate units controlled by one Dometic thermostat. Where is the module board located that controls both of these units on a 2013 Thor Palazzo? There are only 3 wires at the thermostat ,red-white-green. Just started using this forum, any help is appreciated.
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11-09-2018, 03:00 PM
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#6
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Senior Member
Brand: Thor Motor Coach
State: Georgia
Posts: 2,585
THOR #4735
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I would also try a simple measure/test to start: simply switch 'off' your 12v switch at the entry door, for a moment, then back 'on'. Sometimes, like computers, a reboot is a simple solution.
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the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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11-09-2018, 06:07 PM
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#7
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,396
THOR #7035
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Quote:
Originally Posted by craig2fly
The furnace and roof ac unit are 2 separate units controlled by one Dometic thermostat. Where is the module board located that controls both of these units on a 2013 Thor Palazzo? There are only 3 wires at the thermostat ,red-white-green. Just started using this forum, any help is appreciated.
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I've never seen an RV thermostat with only 3 wires attached, even the battery powered ones.
Check out this thread:
http://www.thorforums.com/forums/f4/...rade-2100.html
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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11-09-2018, 09:13 PM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds
State: Ontario
Posts: 265
THOR #9081
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I am assuming your Palazzo has the Dometic Single Zone TStat (similar to the two that my 2014 had, because the model I had, had two furnaces). I am also assuming you checked the 12v fuse for appliances, but they should be good as you have a display on the Tstat. There are only 3 wires from that Tstat, DC pos, DC neg, and comms. They run to the control box accessible after removing the air return cover of the Air Conditioner. The furnace DC wires run up there also. The furnace DC neg could be spliced into the Tstat DC neg before the Tstat wires run into the control box. There could also be a connector before the control box. Try wiggling the wires going into the connector(if present) or into the control box. Could be corrosion as a result of moisture. Good luck.
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2018 Four Winds 31Y
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