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Old 02-27-2023, 03:45 PM   #1
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Join Date: Sep 2022
Location: bullhead
Posts: 27
Tankless water heater/Furnace problems...

Just want to throw out here my situations with my furnace and tankless water heater situations that are now fixed for the information.



The furnace has 4 wires coming out of it. Pos12v, Neg12v, thermostat neg and furnace pos.


Having the problem I thought the thermostat pos was to be hooked up for the signal back from the thermostat but it's the THERMOSTAT NEG that is wired in the system. The Pos thermostat does nothing, not hooked up.



The tankless water heater would start, run for a couple seconds and cycle a couple more times. Flame on 3 seconds, flame off. On 3seconds, off. etc.

I found 2 hoses at the bottum of the heater that were "twisted". I removed them from the two spouts, cut off the creased bit of the hoses and reattached. All worked fine from there.


This is just information hoping it helps someone in the future with the title tags.



Be safe. Be happy. But most of all...
Enjoy life the most you can. After all... It's the only chance we all get!!!
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furnace troubleshooting, tank less water, tankless water heater

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