View single post by ornrydaddy
 Posted: Wed Jan 6th, 2010 02:15 pm
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ornrydaddy

 

Joined: Thu Jan 18th, 2007
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 I was working in the utility room last night when I noticed my Rheem Power Vent water heater was acting strange.  I could hear the fan motor running as it normally does during the heating cycle but the flame kept turning on and off until the thermostate quit calling for heat.

During the call for heat from the thermostat, the glow plug came on and then the gas valve would open shortly thereafter to ingite the flame.  The flame would burn for about 30 seconds or so and then suddenly stop with a click (I think the gas valve closed).  Then almost as soon as the flame went out, the glow plug would come back on and then and with another click from the gas valve the flame would reignite.  This cycle continued until the thermostat stopped calling for heat.

The unit is still making hot water (thankfully) but I'm fearful that the over cycling will cause a premature failure of control components.  I had to replace the gas valve about 2 years ago and replaced the control module last October.

I suspect there is a temperature sencor somewhere that needs replaced.... any help or information would be appreciated.

Thanks,

Eric