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Atwood W/H Overheating on LP&AC

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Atwood W/H Overheating on LP&AC Tim R 6-13-09  
Hi guys - a real head scratcher - My Atwood W/H won't shut down once the water reaches temp - both AC and LP systems - the propane will just keep running until it blows the relief valve. Weird it happens on both systems - is there one thermostat for both? Any suggestions?
Re: Atwood W/H Overheating on LP&AC Keith 6-14-09  
Hi Tim, What model and year is the water heater?? Is it DSI or Pilot?? Makes a difference.
Re: Atwood W/H Overheating on LP&AC Tim R 6-14-09  
I'm not sure of the model - its on a high end 1 year old HR Vacationer - it is automatic start - no pilot. It has a circuit board and some sort of thermocouple coming out the front side.
Re: Atwood W/H Overheating on LP&AC Keith 6-14-09  
Hi Tim, Since it's newer than 2003, it has one thermostat on the front panel that covers both LP and AC. Could be that or the circuit board isn't reading the thermostat telling it to shut off. Hard to say for sure from here.... Good luck!
Re: Atwood W/H Overheating on LP&AC Keith 6-14-09  
Hi again Tim, You also might want to give Atwood a call at 1 800 825-4328. This should be still under warranty.
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