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Old 12-10-2010, 03:12 PM   #1
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Water heater won't light


I have a 6 year old AO Smith propane water heater, model #GPSH 50-101. The heater wont light by itself and shows an error code that the system is in lockout.If I unplug the unit from the wall and plug it back in it tries to light 3 times and shuts itself off and shows the same error code.If I unplug the 3 wires that go to hot surface ignitor and sensor and plug them back in,it will light and work great. Do I need to replace these parts or could it be something else?

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Old 12-10-2010, 03:59 PM   #2
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Water heater won't light


Try polishing the sensor with steel wool or a scotchbrite pad. Don't use any type of chemical cleaner.

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