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AO Smith water heater

Burner won't light

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6 Suggested Answers

6ya6ya
  • 2 Answers

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

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Posted on Jan 02, 2017

  • 74 Answers

SOURCE: AO Smith water heater won't fire.

I bet your thermo couple is bad or your ports are clogged? How old is the unit?

Posted on Apr 16, 2009

  • 101 Answers

SOURCE: AO Smith water heater about 4 years old pilot went

It sounds like your flame detector (usually a thermocouple) has gotten weak and when you cleaned the pilot the stronger flame was able to generate enough power to keep the gas valve working. If you replace the thermocouple your problem should go away. If a new thermocouple will not keep the gas valve operating...the coil in the gas valve has gone bad and you will need to replace the gas valve assembly. (most valves do not have replaceable coils).

Posted on Sep 10, 2009

SOURCE: I have a GPVH 40 100 AO smith hot water heater.The

AO smith manuals
http://www.hotwater.com/lit/im/r-gas.html

GPVH series manual
http://www.hotwater.com/lit/im/res_gas/315465-000.pdf
You can search the manual for FV

The FV sensor shorted because it detected flammable gas

Quote manual:
Flammable liquids (such as
gasoline, solvents, propane (LP or butane, etc.) and other substances
(such as adhesives, etc.) emit flammable vapors which can be ignited
by a gas water heater's hot surface igniter or main burner. The
resulting flashback and fire can cause death or serious burns to anyone
in the area. This water is equipped with a FV sensor for detecting the
presence of flammable vapors, see Figure 3. When the sensor detects
those vapors, the unit will shut down and not operate. Should this
happen, please refer to the troubleshooting guide on pages 28-30.

Troubleshoot step 14-15 says
replace the FV sensor
call tech assistance number that shows on water heater
AO Smith will refer you to a plumber
I don't believe homeowner can buy these parts due to Federal regulations
The shorted FV sensor probably saved you a flash-over
The cost of 2nd degree burns from a flash-over would be astronomical.
Fortunately you're ok, and the other folk in the room are ok.
In the old days.
Two guys I knew, winter 1978 Chicago, were laying VA tile using the black mastic.
They were killed and the house burned down because of the water heater.
Main office marked the event with a memo saying they still owed money on their account.

The only company with a re-settable FVIR that I'm aware right now is Bradford White
http://www.thetankatwaterheaterrescue.com/forums/forum3/2679.html
http://411plumb.com/bradford-white-defender-water-heater-review
Bradford White Defender FVIR is resettable without buying parts.
324e006.jpg

Posted on Oct 25, 2010

SOURCE: I have an AO Smith Model EES 52 917 hot water

You have electric water heater.

Inside the upper panel on water heater is a thermostat with red reset button.
1) Click the reset.
2) Put insulation back over thermostat so it is not exposed to cooler air, so it reads correct temperature.

After resetting thermostat, you will have hot water.
The reset automatically clicks off when thermostat detects temperatures in excess of 150 degrees.
The re-set is a safety device, and it keeps everything safe.
If reset will not 're-set' with cold water in the tank, then thermostat is bad, replace thermostat.
You can repair electric water heater yourself following steps on links below

http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html
http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html

If the reset clicks off again, just reset it
This is not a dangerous situation
Reset thermostat as many times as necessary until you can fix the problem

If you have trouble fixing the problem, add a comment at bottom of this page and it sends me an e-mail and I will help further

f749bbd.jpg
Thermostats with ECO red reset

Posted on Oct 26, 2010

SOURCE: I have an A. O. Smith Model FPSH 40-261 hot water

AO Smith uses the Honeywell ICON gas valve with green indicator light.
Some models use White Rodgers Intellivent with a row of indicator lights.

The gas control blinks the error code:
Open following links to identify gas control thermostat and read possible error codes:
http://waterheatertimer.org/pdf/Honeywell-Gas-Valve-LED-Codes-2000.pdf
http://waterheatertimer.org/BW.html#Temp
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html#intelli

Posted on Jul 18, 2011

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1 Answer

AO Smith Water heater FPSH50-260 keeps blowing fuses


FPSH series is a power vented residential gas water heater.

1) The blower is plugged into 120Volt outlet. If blower has short, then it will trip breaker.
Blower could be Fasco model 7021-10195, or 7021-10770. Call AO Smith: 1-800-527-1953. They will need model number and serial number located on label on side of tank.

2) Before calling AO Smith, check outlet with circuit analyzer. Outlet must have correct polarity and must be grounded. Unplug cord to water heater and run continuity test from ground prong on electrical plug to manifold tube on gas valve.

3) Also if a fluorescent light fixture is on the same breaker, that can cause burner to short cycle.

4) Connect water heater to different outlet and see if problem continues.

5) AO SmIth has service manuals for the FPSH series that download to your computer:
http://www.hotwater.com/resources/product-literature/service-handbooks/

Sep 20, 2011 | Water Heaters

1 Answer

I have an A. O. Smith Model FPSH 40-261 hot water heater. It won't heat water. there is a green light on the control flashing. What does it mean?


AO Smith uses the Honeywell ICON gas valve with green indicator light.
Some models use White Rodgers Intellivent with a row of indicator lights.

The gas control blinks the error code:
Open following links to identify gas control thermostat and read possible error codes:
http://waterheatertimer.org/pdf/Honeywell-Gas-Valve-LED-Codes-2000.pdf
http://waterheatertimer.org/BW.html#Temp
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html#intelli

Jul 18, 2011 | Water Heaters

1 Answer

The pilot light on my hot water heater keeps going out


If you have a blower and electronic gas control on your AO Smith water heater, then reading the manual for your specific product is essential for troubleshooting the problem.

As you know, tank-type gas water heaters require periodic inspection and cleaning of burner parts and combustion chamber.. The manual is important for giving instructions and advisories to the homeowner and technical specialist.

If you have ordinary direct vent water heater with mechanical gas control the following link has some troubleshooting resources that might help:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean

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May 19, 2011 | RTO W4 A.O Smith Gas Hot Water Heater...

1 Answer

AO Smith Burner Issues


This system uses an electrical test to make sure that the burner is lit. The flame sensor will either be broken or will be covered in deposits (clean with an emery cloth).

The flame sensor is usually a small metal rod that would be in the direct line of fire of the burner with 1 wire attached.

CAUTION:

The ignitors can be very fragile and are expensive. They are very brittle, do not touch it.

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Gvr 40 100 will not stay lite


The Cold air screen on the bottom of the water heater is partially plugged. That is if the pilot light can be lit and stay on, but goes out when the heater should be functioning normally. This is not the removable plastic screen but a round white-yellow grid with 1/32" holes. You can try to clean it through the bottom but you may have to remove the gas line from the controller to the burner, pilot gas line, and thermocouple connection to remove that complete assembly to get access to the screen. The AO Smith booklet warns of this but they pretend the plastic screen will keep this second screen clean but it won't. After three years it was two thirds plugged.

Dec 12, 2009 | RTO W4 A.O Smith Gas Hot Water Heater...

1 Answer

Burner didn't ignite on my AO Smith model FXGT/PGXT


Unless your AO is a high recover it will take a while for it to fill up with the water that you have used then reheat the water in the tank.

Nov 12, 2008 | Water Heaters

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