Propane Water Heater - No temp control

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Brad Anesi

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Investigating a problem with my Dad's water heater (DHW only). Even after moving the thermostat to "Low", and then "Vac", and then finally to "Pilot", the water was still too hot. Note, this was done over the course of three weeks - I realize the water is not going to drop in temperature immediately. As a test, I finally turned it to "Off" and only then did I get room temperature water after two days.

Am I correct in assuming the Honeywell thermostat needs to be replaced? Any other tests I should do to verify? The light flashes suggest everything is fine.

Where do find a part# on this thing?
 

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WorthFlorida

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From your questions, get a heating/cooling/plumbing company to do the replacement. Don't mess with gas if you never did any piping before. The gas valve maybe the same for propane and NG, but most are set for NG. You have to know how to convert it to propane.
As Breplum suggest, replace the WH if it well over its life span. Gas WH generally over 10 years old replace it. Newer tanks are more efficient with better jacket insulation. Gas WH's do build up minerals at the bottom and act as an insulation that inhibits heat transfer to the water. If you hear gurgling, it's mineral deposits.
 

Brad Anesi

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Thanks for the input. It's got an install date of 2017, so very close on the warranty. Is labor usually included with the warranty? It was installed by a reputable plumber.
 

WorthFlorida

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Thanks for the input. It's got an install date of 2017, so very close on the warranty. Is labor usually included with the warranty? It was installed by a reputable plumber.
Labor is usually one year. The plumber would need the tank serial number to learn if it under warranty from the manufacture.
 
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