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Hot water heater thermostat

I can't get the pilot to light on the Honeywell thermostat. The gas is on but I don't smell anything when I push in the knob in the Pilot position.

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  • Water Heaters Master
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Copy following link for service manual and to troubleshoot by type of gas control valve:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent
http://waterheatertimer.org/How-to-install-gas-water-heater.html
http://waterheatertimer.org/How-to-light-gas-water-heater.html
Add a comment and say if this is new heater or older heater that stopped working, and include brand for best guesses at the solution.
Gene

Posted on Jul 22, 2013

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The pilot light on the water heater went out and the red light is blinking four times on the thermostat (Honeywell WV8860B1317). How do I get this to stop so that the pilot light can be relit?


The flashing light 4 times indicates high water temperature has activated the over heat sensor, and that the only remedy is to replace the gas control valve/thermostat.

Dec 08, 2014 | Water Water Heaters

1 Answer

Can't light pilot light on hot water service. Gas to property is connected as the gas stove works.


There should be a trouble shoot guide on the hot water tank. I have had to do this many times. You just need to read the trouble shooting guide & be very careful. I hope this works for you.
D :)

Feb 01, 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

Reliance 606 natural gas water heater - model #640YORT - water does not stay hot. pilot has to be clicked to heat and then u can use hot water til tank empty and it will not continue to heat water.


If I understand correctly, the pilot light is not staying lit.
You light the pilot and water in the tank reaches temperature.
Once hot water is gone, then pilot light has to be lit again.

Gas pressure is good, and gas is flowing.
Thermostat is working at high end because it cuts off heating.
Vent is working because tank heats up.
Air intake is working.

Gas control thermostat might not be reading low temperature. Replace gas control valve.
Pilot tube might be dirty. Clean burner parts and combustion chamber, and air intake, and vent.
Backdraft might be blowing out pilot. Check for constant updraft by running water heater 5 minutes, and then light match under vent hood and see if smoke goes up.
Very hot air can put out pilot, especially when water heater located in attic. Add ventilation.
Improper vent might have water dripping back down into combustion chamber and putting out pilot light and rusting out the parts. Inspect for rusted parts and water.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf

Aug 09, 2011 | Reliance Natural Gas Water Heater Control

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

1 Answer

7-25-11. Purchased Reliance 909 model 950 GKRT 200 natural gas hot water heater. 7-31-11, installed said hot water heater according to instructions and code, filled with cold water and checked for gas and...


The problem requires looking at manual and service handbook, except handbook doesn't show most recent water heater.
My first check point would be gas supply, and then vent draft, and then air supply.
Take off front cover and try lighting again to make sure air supply is not problem.
Review lighting instructions.
If there is no gas, and gas is turned ON, then gas control valve is suspect.

On-line manual for Reliance 909 gas
http://www.reliancewaterheaters.com/lit/om/manuals/186486-002.pdf
Reliance 2006 service handbook:
http://waterheatertimer.org/pdf/Reliance-2006-Service-Handbook.pdf

Other resources:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/images/Test-water-heater-vent-1400.jpg
http://waterheatertimer.org/images/Water-heater-in-attic-800.jpg

Jul 31, 2011 | Reliance Natural Gas Water Heater Control

1 Answer

Hot water heater pilot is off. It's not gas,


You have tank-type gas water heater:
Open following link to watch thermocouple replacement.
Make sure new thermocouple sits into pilot flame. Instructions for relighting water heater are usually printed on side of tank.
http://www.youtube.com/watch?v=v0aBPsNg6vo

Gas water heaters need working thermocouple, adequate incoming fresh combustion air with no trace amounts of chemical, open vent to outside that drafts poison combustion product upward, clean burner tubes and combustion parts, correct gas pressure with no air in line, working gas control valve thermostat, no lockout condition such as tripped ECO caused by runaway heating and dirty combustion parts, and no lockout condition such as exposure to flammable vapors.
Open following links for troubleshoot resources:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
http://waterheatertimer.org/pdf/Attic-Ventilation-and-Pilot-Outage-in-Gas%20Water-Heaters.pdf

http://waterheatertimer.org/images/Water-heater-in-attic-800.jpg
http://waterheatertimer.org/images/Test-water-heater-vent-1400.jpg

Jul 29, 2011 | Whirlpool 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

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