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Code 1AA GAS CONTROL VALVE CODE 1AA

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Water heater resets to vacation mode every few weeks. This is after resetting error code.


Troubleshoot manuals for different types of gas water heater control valves:
]http://waterheatertimer.org/troubleshoot-gas-water-heater-thermostat.html#honeywell

It's possible that gas control valve has gone bad

Nov 13, 2017 | Water Water Heaters

1 Answer

AO Smith GPS 75 200 not working


Copy following link for troubleshoot service manuals by type of gas control valve, including instructions for replacing gas control valve:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent
http://www.hotwater.com/lit/training/320988-000.pdf
Perform the required maintenance, and catch unit up to date, and replace gas control,,, might be best to call plumber.
The intellivent gas control valve is removed completely from tank, so tank must be drained.

May 01, 2013 | Water Heaters

1 Answer

Gas valve faultdetected


Copy following link to troubleshoot by type of gas control valve, and read how to replace gas control:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

There are basically two types of Honeywell gas control valves.
One for atmospheric-vented water heater, and one for power-vented
For both types of controls: 8 flash + 3 flash error: replace gas control valve.
Water heater does not need to be drained to replace this gas control.

Apr 01, 2013 | Honeywell Water Heaters

1 Answer

Pr sw failed to close


Troubleshoot by type of gas control valve
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Repeated 3 flash on power vented honeywell gas control thermostat means system in lockout.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

Repeated 3 flash on atmospheric-vent Honeywell gas control valve means temperature sensor failure.
Take apart gas control, and buy temperature sensor if sold separately at AO Smith dealer.
http://waterheatertimer.org/How-to-replace-Honeywell-gas-control-valve.html

Add a comment with more information

Mar 23, 2013 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

Whirlpool 6th sense natural gas water heater 50 gal. Bought brand new today. Upon installation, discover low gas pressure running to unit. Turned out that gas line had under ground leak so had to turn...


1) Be careful before you Call Whirlpool 1-877-817-6750.
Be careful what you report so not to void warranty because installation protocol was not followed. Whirlpool will cover gas control valve, and possibly the installation of valve which takes about 15 minutes and does not require emptying water heater.
************So make sure you report installation that is consistent with installation shown in manual.

2) Whirlpool will also answer this same question later today with invitation to contact them.

3) Copy following link to identify gas control valve, and download service manual:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

4) If dirt or debris gets into gas control valve, it will cause it not to work. Such as broken gas line. Debris can enter gas line.
Or if too much pipe dope was used on gas connection, or stray teflon tape got into line and then into valve, or end of pipe got dirty during installation, and then dirt got into gas control.
Take off gas line and use vacuum cleaner to see if something can be removed by suction. Clean up the joints.

5) It appears you have ordinary Honeywell gas control valve on atmospheric vented water heater with 9 year parts-labor warranty..
Unknown error code, so it is hard to look up solution in service manual.
Add a comment if you want expert to look up error code in service manual.

Feb 13, 2013 | Water Heaters

1 Answer

Rheem model 41vrp40n flashes twice and stops working


Error code means that you have electronic gas control valve.

Copy following link to identify gas control valve, read error code meanings for each, and download service manual relevant to each gas control, but not specifically Rheem since rheem does not post service manuals.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

The fact that water heater restarts, means that water heater is getting gas, getting sufficient air for combustion, thermister is ok, gas pressure is good, etc.
The fact that you unplug and replug water heater and it works, shows that you have power vent model.
Since water heater worked correctly before, 2 flashes with Rheem power vent model could mean that pressure switch has failed.

Jul 29, 2012 | 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

Automatic restart is not working. Seems to keep saying eco problem...I thinl...the code is four flashes followed by two flashes.


Gas control valve is not identified, so error code is not known.
ECO means energy cut off.
Energy cut off happens when gas control valve thermostat has gone bad, or when gas control senses runaway heating inside combustion chamber.
Newer heaters have resettable ECO for combustion overheat. This reset is typically located on combustion chamber door and is round and has two wires that connect back to gas control. Generally you have to clean combustion chamber and tubes and catch up on maintenance, then reset ECO, then fire up heater again to see if problem is resolved.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/images/Typical-gas-valve-500.jpg

Newer heater does not have reset for bad thermostat, and in that case you replace gas control valve thermostat.
Older heater does not have reset, and combustion chamber and parts are cleaned, and gas control valve thermostat is replaced.
Your manual is best place to start troubleshoot.
Open following link to help identify gas control valve:
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html

Jul 10, 2011 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

I have a Paloma tankless water heater with an error code of E12 followed by 80 any ideas?


the code 81is a gas cut off failure..it could be a gas control valve problem...i don't know what the E12 is so you would have to contact rheem

Jul 17, 2010 | Rheem Paloma PTG-74PVN / RTG-74PVN...

1 Answer

Noritz tankless water heater gives error code 11


This worked for me in the same situation. There is a filter inserted into main gas/ water control valve that senses water flow restriction. The sensor is connected to the gas valve. If it senses inadequate water flow it tells the gas valve to shut down so the water in the heater won't boil. Very expensive part. If you do find the filter clogged, a sediment water filter shoud be install on the inlet side of the water piping.

Oct 12, 2009 | Water Heaters

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