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Main Forum => General Discussion => Topic started by: Neecy on March 15, 2021, 12:16:00 am

Title: No hot water
Post by: Neecy on March 15, 2021, 12:16:00 am

Last night I had hot water. Today, I don't.  I tied using the electric and the gas -- no hot water. I don't know what I need to check next.  Any suggestions?

Title: Re: No hot water
Post by: Neecy on March 15, 2021, 12:17:49 am

I forgot to add that I have a 2013 2552

Title: Re: No hot water
Post by: Ron Dittmer on March 15, 2021, 12:24:02 am

Kill the power to the house.  Open up the HWT access panel outside and make sure each electrical connection is clean and tight.  You might have corrosion and/or looseness causing an intermittent connection.  Anything suspicious, clean the terminal spades with steel wool and soak the wire-ends in CLR, then rinse them in a small cup of water, dry off, crimp-tighter if they slip over too easily, and hope for the best.

If your problem is deeper yet, then my advise ends there.

Title: Re: No hot water
Post by: mikeh on March 15, 2021, 01:00:21 am

Neecy,

I'm not where I can access my manual on my heater, but I do know that there is a control board in the unit that manages various parts of the water heater operation.  Mine had a bad board when delivered, and would not fire up on either electric or gas until the board was replaced.
Since it has a control board, that means it uses a DC feed to operate the board, and I assume it gets the DC feed from a fuse in your electrical panel--so you might check the fuses in your panel.  If you have internet access, you can search on Atwood/Dometic RV water heater--there are some troubleshooting videos online that might help.

Mike

Title: Re: No hot water
Post by: Ron Dittmer on March 15, 2021, 11:18:14 am

Very good point Mike.....check all your little 12V house fuses.  I wouldn't know which fuse supports the HWT so pull them out one at a time and visually look to see if the little filament inside is solid or broken.  It is very simple to do and takes a few seconds to check each one.  A needle nose pliers will pull them out, but if you have no tools, I think a tweezers will suffice.

Title: Re: No hot water
Post by: keelhauler on March 15, 2021, 11:49:11 am

Water heater and refrigerator are on fuse 6
Check DC voltage for your 2 batteries.

Title: Re: No hot water
Post by: CalCruiser on March 15, 2021, 01:11:14 pm

Maybe the thermostatic control  is failing??
Assuming there is water pressure, propane, and 110v AC,  try turning the dial all the way up and down a few times .

https://homesteady.com/how-7287574-set-temperature-atwood-water-heater.html


Footnote: Always check the obvious first. This suggestion is purely a SWAG. Good luck!

Title: Re: No hot water
Post by: Neecy on April 05, 2021, 05:02:44 pm

Thank you all...It is fixed!  I don't know what was wrong, hired a guy.

Title: Re: No hot water
Post by: wideglide on July 24, 2026, 01:25:08 pm

For future reference

My new to me PC was purchased with a defective water heater. Yes i took that gamble but im pretty competent in repairing pretty much anything. The control board and the TSTAT & ECO sensors can prevent it from turning on, that is of course if its now a blown fuse in the panel. There is also a thermal fuse inline with the TSTAT. You can buy the TSTAT/ECO kit for $15 and the control board for about $40. Super easy to swap out. Mine was the thermal fuse so i replaced all the parts for the TSTAT/ECO and it fired right up. Have the control board put back for when i need it.

TSTAT kit

https://www.amazon.com/AMI-PARTS-Thermostat-Assembly-GCH6A-7E/dp/B0CN14GMZR/ref=sr_1_1_sspa?crid=1DND8G3Q88EQY&dib=eyJ2IjoiMSJ9.iRq1wOCJQZ1splzvyl7vo1JoeH7ne_PRonxx_pXd8w5Kv68b5TRnwLH5Mw90onRGawUVFWXjz1TeeSQTyV_2uK3lZRvX4314KmzX3lLB3B5XNeuERA5UWjpdszhlChbigBVTVJpvqHlJPwuI-GUiQjzAfjjryq5WsJRkRJfIs4cC_INwQC6O3dkI5Z7ZnLcXPsyF1f9PXVPWQXfdClf8xHDRJOtdU5biEdawzPjLnYWOr2I3eqPMBYI2wA-2o4ZwHKAV9B-FgBNut-QGzvYNurUGHyvvSfl4KftVNXreuUg.edqcTCbJq2dTi5TrmkuTF9LLWLzsmZZISuJSndmFdbQ&dib_tag=se&keywords=dometic+water+heater+thermostat&qid=1784913361&sprefix=dometic+water+heater%2Caps%2C330&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1


Control board

https://www.amazon.com/Lrichy-91365-Universal-Replacment-GCH6A-10E/dp/B0D1Y8N5FS/ref=sr_1_1_sspa?crid=3TXVCBKX8UBHP&dib=eyJ2IjoiMSJ9.qYHstHqRu03q88Jl6kBUJSjr1xEicG4hpdNQhqrRwiSbqUwD-nnWIAeTtjdnNHDLQRHVsPN310EvoccXe7gBODZDBGxP6PMuYVfLQ4CsGmQqS1KLxUnDcVTPIAguC9IxP7AYRoEr2DKNyuPNW-n7PrcotNPpveI-cMZm7G9LANnt05VE-t5GbuBdpuzF87P0Wrw2NFZxEe9nZR-_Lsj8NyKqpQ9BR_KnAhJAF3S7G40.XihbHzeyMyg1ymoyi0I0kurpXXu3LnPBnxRzaFWfi5g&dib_tag=se&keywords=dometic%2Bwater%2Bheater%2Bcontrol%2Bboard&qid=1784913835&sprefix=dometic%2Bwater%2Bheater%2B%2Caps%2C472&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1

Title: Re: No hot water
Post by: Ron Dittmer on July 25, 2026, 07:52:30 am

wideglide,

Good data you shared.  It is nice to know these parts are available.  I did not yet check my HWH owner's manual for compatibility for our 2007 model year, but you enlightened me on a starting point if our HWH fails.

Thank you!