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Old 03-07-2021, 11:25 PM   #1
Gbailey9099
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Furnace dead/ dometic thermostat

Hey all.

Have had reoccurring issues with furnace; first time igniter was water damaged, then had a bad sail switch...

Now I’m getting nothing from furnace.

I turn the thermostat on, hear repetitive clicks from furnace and the blue thermostat light flickers... sometimes when I kick it on I get no clicking or flickering.

Furnace circuit board shows no code (no blinking light)

Bad converter and/ or battery? I’m hooked up to shore power.

Thanks in advance.
 
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Old 03-07-2021, 11:26 PM   #2
Gbailey9099
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Also - all other power is working perfectly; all lights and outlets.
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Old 03-08-2021, 05:17 AM   #3
jimcol
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Could be a lot of things. Go to the brown bar at the top of this forum and find files. Click on it and you will find trouble shooting guides.
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Old 03-08-2021, 05:55 AM   #4
Daryles
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I would start by swapping the black 15A self resetting fuse with a spare blue 15A regular fuse.
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Old 03-08-2021, 06:53 AM   #5
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The clicking you are hearing is the TD relay on the Dometic furnace control module.. I’d be checking the connection in the module board for corroded conditions and clean and try again.

You can also apply power to blower motor bypassing the board to verify blower motor is good or bad..

Since you had water issues that’s where I’d be looking
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Old 03-08-2021, 07:59 AM   #6
Gbailey9099
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Appreciate the responses. Thanks.
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Old 03-08-2021, 09:38 AM   #7
Gbailey9099
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Pulled my furnace fuse this morning. The fuse itself isn’t blown but it’s burnt (?)
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Old 03-08-2021, 10:08 AM   #8
WeBeFulltime
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Quote:
Originally Posted by Daryles View Post
I would start by swapping the black 15A self resetting fuse with a spare blue 15A regular fuse.
Do this even if it's not the current issue.
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