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E4 error on thermostat |
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Loonieloons 
Newbie 
Joined: 01 Nov 2023 Location: Livonia, NY Online Status: Offline Posts: 2 |
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 Topic: E4 error on thermostatPosted: 02 Nov 2023 at 1:22pm |
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New members as of 11/1/2023. We have a new to us 2018 RP180 purchased in spring of 2023. All systems worked great. Now however, when trying to use the heater, I pushed through the prompts on the Dometic thermostat to the heat position. Then, the AC kicked on with E4 code on the thermostat and the heater blower came on with no heat. Has anyone on this forum had the same issue, and how was it resolved? Thanks for any info.
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Loonieloons
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StephenH
podders Helping podders - pHp 
Joined: 29 Nov 2015 Location: Wake Forest, NC Online Status: Offline Posts: 6428 |
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Posted: 02 Nov 2023 at 2:16pm |
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https://thecampingadvisor.com/dometic-thermostat-e4-code/
I have not had the issue, but the link should help you get it resolved.
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StephenH
Happy is the man that findeth wisdom,... ouR escaPOD mods Former RPod 179 Current Cherokee Grey Wolf 24 JS |
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Loonieloons
Newbie
Joined: 01 Nov 2023 Location: Livonia, NY Online Status: Offline Posts: 2 |
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Posted: 02 Nov 2023 at 10:25pm |
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Thanks to SH for the info.
Still perplexed |
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Loonieloons
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StephenH
podders Helping podders - pHp
Joined: 29 Nov 2015 Location: Wake Forest, NC Online Status: Offline Posts: 6428 |
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Posted: 02 Nov 2023 at 11:57pm |
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https://www.youtube.com/watch?v=HhT5v0i2vVo
Try this one. I don't know which thermostat you have. John's videos are quite helpful.
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StephenH
Happy is the man that findeth wisdom,... ouR escaPOD mods Former RPod 179 Current Cherokee Grey Wolf 24 JS |
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seafans
Senior Member
Joined: 24 Nov 2017 Online Status: Offline Posts: 164 |
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Posted: 03 Nov 2023 at 6:04pm |
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Only some general info. Check the fuses for the A/C and heater. "These codes typically indicate a more specific wiring issue or a
problem with the thermostat’s power supply. Here are some possible
causes and troubleshooting steps for E3 or E4 codes: Wiring problems:
The error code may indicate an issue with the wiring connections between
the thermostat and the HVAC system."
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StephenH
podders Helping podders - pHp
Joined: 29 Nov 2015 Location: Wake Forest, NC Online Status: Offline Posts: 6428 |
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Posted: 03 Nov 2023 at 9:37pm |
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My understanding is that the E4 error has to do with the air conditioner units that are heat pumps and can be reversed to provide heat. Since we don't have a heat pump, the error is spurious. The first site had some suggestions about how to clear the E4 error, but they were further down on the page. Scroll down and one of the suggestions may be of use.
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StephenH
Happy is the man that findeth wisdom,... ouR escaPOD mods Former RPod 179 Current Cherokee Grey Wolf 24 JS |
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