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Promax aosmith won't light GPS75201

Just had the service man out Friday but it's doing it again. Water heater goes out with one green vacation light on and the four right heat indicator lights on. Any clues?

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  • Water Heaters Master
  • 5,089 Answers

Jan 2013. Intellivent gas control valve.

1) Copy following links for troubleshoot by type of gas control valve.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent
http://hometips.me/Mar/Intellivent-service-manual.pdf
http://hometips.me/Mar/How-to-replace-water-heater-gas-valve.pdf

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.

Posted on Jan 20, 2013

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Posted on Jan 02, 2017

  • 234 Answers

SOURCE: water heats for about 3 seconds and goes cold

Take the cover off and look for reset that has trip.If you can't find no reset turn the power off and wait for five minutes,turn on and turn water on also to see if you get hot water.

Posted on Mar 15, 2009

  • 659 Answers

SOURCE: How to install a new temp sensor Whirlpool electric water heater

The instructions for installing the sensor will probably included with the new part. Also, when you receive the part and actually see it, you will probably know where it will go. Sometimes, things like this happen even with new units. I have had bad thermocouples on brand new units right from the factory. It happens and unfortunately it happens to us sometimes. Good luck and if you get the part and still have trouble, contact them again. If you would have bought a GE (Rheem) unit, they would have sent a tech out to your house at no cost. I'm not a fan of Whirlpool water heaters.

Posted on Apr 02, 2009

  • 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

  • 1810 Answers

SOURCE: pilot light goes out after water heater shuts off.

sounds like the wiring is backwards check the wiring
also check the thermo coupler

Posted on Jul 27, 2009

SOURCE: I have a model 6G40PVW-40F

Most gas water heater problems today can be solved with yearly maintenance that includes cleaning burner parts, clean air intake, check venting, check electrical connections, bleed gas line, and check gas pressure.
Gas water heater manuals recommend yearly maintenance by service technician.

In past years, gas water heaters required less maintenance, but they were less energy efficient and more dangerous to operate.

Sounds like you have Intellivent gas control valve thermostat.
Open following link to identify gas valve and see error codes:
http://waterheatertimer.org/pdf/Intelli-vent-gas-valve2.pdf
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html#intelli

Error light on vacation + 2 other lights = 3 possible conditions:
1) Wiring error: check outlet with circuit analyzer:
http://waterheatertimer.org/images/Typical-circuit-analyzer-15.jpg
2) Pressure switch tubing not connected, air intake obstructed (clean intake), or vent exhaust obstructed (check for proper venting).
http://waterheatertimer.org/images/Test-water-heater-vent-400.jpg
3) System in lockout: Low gas pressure, hot surface igniter not positioned correctly.

You can do some of this yourself.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean

Posted on Jul 01, 2011

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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...

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Ticking sound top 1/3 of AOSmith Electric Water Heater


Replace heat trap nipples or inserts?
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html#heat-trap
Factory Heat traps save $2-$9 per year but can cause noise, and you can make your own heat traps.
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html#heat-trap
Electric water heater is probably the only household appliance made today that can be maintained and repaired by homeowner to last almost indefinitely. Certainly no other water heater can last as long, even with maintenance.
http://waterheatertimer.org/How-to-maintain-water-heater.html
Add a comment and say what you find

May 06, 2013 | Water Heaters

1 Answer

A.O. Smith ProMax Plus GVR 50 101 Safety Question


You need to inspect and clean the air intake located on bottom of unit. Get more fresh air to the water heater and see if problem continues.
http://waterheatertimer.org/images/Flame-trap-inspection-325.jpg
http://waterheatertimer.org/images/State-select-air-intake-400.jpg

Instructions for lighting the unit are located on front of water heater.
Other possible causes include: bad gas control valve, dirty combustion parts, reverse draft down the stack (caused by wind and opening door inside closed utility room), low gas pressure, air in gas line, etc.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

Propane gas is heavier than air. So if you have a gas leak, then smell close to floor. Leave house immediately if you smell gas. Install a gas detector close to floor level near gas appliances.
Most water heaters today are extremely safe, because we experimented on prior generations of people, who then passed along their experience.

Aug 12, 2012 | Water Heaters

1 Answer

To light the pilot on my OS Smith water heater, I follow the instructions in the label, but nothing happens, no hot water after one hour. Read that there is problems with water heaters, I have some...


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.
http://www.hotwater.com/resources/product-literature/service-handbooks/

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.
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html#intelli

3) More resources:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Sep 23, 2011 | Water Heaters

1 Answer

My Honeywell Water Heater Thermostat will turn on for 30 seconds. Then it shuts down- wait 5 seconds turn it off EITHER with the ON/OFF switch OR by turning thermostat to off & back on immediately! If...


Time to call qualified service technician. And watch what that person does to learn about your water heater.
I assume you have Honeywell Icon gas valve. Honeywell makes different several model numbers.

Here is 'typical' Honeywell Icon gas valve service manual for Bradford White, that may or may not apply to your water heater. It shows testing for Icon and disassembly instructions, and error codes.
http://waterheatertimer.org/pdf/Bradford-white-service-manual-44943-D.pdf

Gas water heaters today require yearly service that includes cleaning burner parts and combustion chamber, checking vent and air intake, electrical connections, testing gas valve, checking gas pressure, bleeding air out of gas line, etc. These are things you can learn to do by reading service manual, and making sure you have a spare water heater around to connect real quick if experiment goes wrong.
If Icon gas valve is problem, that control is modular and can be replaced without draining tank.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Aug 07, 2011 | Honeywell Water Heaters

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