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Promax water heater

Won't light

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Posted on Jan 02, 2017

  • 74 Answers

SOURCE: pilot light keeps going out

Change the thermo-couple.......$5-$10 at any home improvement store. It is a copper wire that is connected to the gas valve/control unit on the heater. Remove it by unscrewing it and bring it into the store with you to make picking it easier.

Posted on Apr 27, 2009

  • 332 Answers

SOURCE: Water Heater Won't Fire up

does the fan come on? this has to happen before it will even try to start if it doesn't your problem goes farther into the unit,, normal pracess if the fan then the ignitor then the flame, It could be in the circuit board most people that have gone with the tankless don't clearly ask the question but that is normal, but if you could clearify the procedure of what it is doing to this point i could be more helpful to you---- e-mail me what is happeing diffrent then what it use to do

Posted on Jun 11, 2009

SOURCE: To light the pilot on my OS Smith water heater, I

Thank you for providing clear description of product:
Your water heater has intellivent gas control thermostat.
There are always problems with water heaters. It is a huge field.

1) Open following link for AO Smith service manuals.
I do not see service manual specifically for the GP series.

2) Open following link to identify gas valve and download typical service manual:
Some AO smith power vent models have intellivent gas valve, and some have smart valve gas vent. Older models might have knob-type gas valve.

3) More resources:

Posted on Sep 24, 2011

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1 Answer

I have. An an A.O.Smith ProMax Water Heater, the igniter does not ignite

low gas pressure, dirty combustion parts, FV lockout, bad thermocouple, misaligned thermocouple, bad gas valve thermostat...
Troubleshoot walk thru begins following page:

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1 Answer

Why would gas stop flowing to the water heater?

if thermocouple goes bad(pretty common) then pilot light goes out and gas stops flowing.

Aug 01, 2015 | A.O. Smith GCV-40 Promax Residential Water...

1 Answer

Rust in water, ao smith promax

It may be what is called iron bacteria it will sometime grow in a water heater. It is present in some water and will actually thrive in water temps up to 120 degrees.if this is the case one solution is to increase the water tempurature of the heater to 130 -140 degrees this will kill the bacteria that is causing the rust problem.You Must install a tempering or mixing valve which will add cold water to temper or cool the water back to 120.
hope this helps.

Dec 02, 2013 | A.O. Smith GCV-40 Promax Residential Water...

1 Answer

Promax aosmith won't light GPS75201

Jan 2013. Intellivent gas control valve.

1) Copy following links for troubleshoot by type of gas control valve.

2) Are all 5 lights ON? Page 13 service manual.
The gas valve driver circuit is bad, or processor is bad.
Cycle power off for 10 seconds.
If problem is not fixed, then replace intellivent gas control.

Jan 20, 2013 | Water Heaters

1 Answer

Water heater has a smell of gas

Gas leak is dangerous.
Call gas company immediately

Sep 02, 2012 | A.O. Smith GCV-50 Promax Residential Water...

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There should be some kind of a dial or electronic display on/near the heater or somewhere else in the building.

You could also try to contact the manufacturer.

Jul 26, 2012 | Water Heaters

1 Answer

Pilot light keeps going out on a a.o smith promax gas water heater

Change the thermo-couple.......$5-$10 at any home improvement store. It is a copper wire that is connected to the gas valve/control unit on the heater. Remove it by unscrewing it and bring it into the store with you to make picking it easier.

Apr 26, 2009 | Water Heaters

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