I need HELP!!!: E4 error on thermostat

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E4 error on thermostat

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Category: R-pod Discussion Forums
Forum Name: I need HELP!!!
Forum Discription: Perplexed/need help with a problem - ask here
URL: http://www.rpod-owners.com/forum_posts.asp?TID=15885
Printed Date: 14 May 2024 at 4:13pm
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Topic: E4 error on thermostat

Posted By: Loonieloons
Subject: E4 error on thermostat
Date Posted: 02 Nov 2023 at 1:22pm

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

Replies:

Posted By: StephenH
Date Posted: 02 Nov 2023 at 2:16pm

https://thecampingadvisor.com/dometic-thermostat-e4-code/ - 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,...

http://www.rpod-owners.com/forum_posts.asp?TID=7712 - ouR escaPOD mods
Former RPod 179
Current Cherokee Grey Wolf 24 JS

Posted By: Loonieloons
Date Posted: 02 Nov 2023 at 10:25pm

Thanks to SH for the info.
Still perplexed

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Loonieloons

Posted By: StephenH
Date Posted: 02 Nov 2023 at 11:57pm

https://www.youtube.com/watch?v=HhT5v0i2vVo - 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,...

http://www.rpod-owners.com/forum_posts.asp?TID=7712 - ouR escaPOD mods
Former RPod 179
Current Cherokee Grey Wolf 24 JS

Posted By: seafans
Date Posted: 03 Nov 2023 at 6:04pm

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."

Posted By: StephenH
Date Posted: 03 Nov 2023 at 9:37pm

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,...

http://www.rpod-owners.com/forum_posts.asp?TID=7712 - ouR escaPOD mods
Former RPod 179
Current Cherokee Grey Wolf 24 JS