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Honeywell error code

Honeywell gas valve blinking 4 times

Honeywell error code
Bob Robertson wrote the following:
I had a power outage at my house and coincidentally (?) my water heater pilot light went out. 
My Kenmore water heater is controlled by the Honeywell Gas Valve (part # 9007884), which contains the WV8840 Communication Port. 
 
The water heater wouldn’t re-light, but I noticed that the indicator was blinking four times in succession.
That signaled an error code for a fatal flaw in the water heater gas valve.
The water heater had supposedly over-heated, even though I had never had it set to anything but “low” (120°F) in the 3 years I have had it. 
By the way, the 3 year warranty expired 3 week ago.
 
The manual, and Sears parts department, told me I needed a new control valve at $150. 
That was their only solution.  They said there was no way to re-set the board.

I researched the internet (many hours!) and found a guy that removed the board allowing the capacitors to discharge fully, (just by removing the board). 
I ended up doing this and it worked like magic. 
Gene adds: the valve is disassembled by removing screw at bottom of gas control:
Steps for disassembly
Steps for replacing gas control

Although, the first time I did it, I only let it sit for about a half hour like he did, and I still got the 4 blinks and it wouldn’t light. 
So, I decided to let it sit overnight and that did the trick for me.  When I put it back in it blinked 7 times. I lit the pilot, and the indicator returned to 1 regular blink (the sign of normal function) as the gas flowed to the burner and ignited.
 
There is no need to completely remove the board from the plastic control valve cover.
The board is held in by one “T-15 torx screw” that would be uncommon for most folks. 
Just make sure you label (or cell phone picture) where the wires go, to be able to return them, and then disconnect all the wires.
This will insure that the board will not be getting any electrostatic signals from the water heater. It’s not very complicated, really.
 
The cover on the Water Heater’s gas valve is removed by a single flat head screw at the bottom. And two finger-pressable connectors at the top. 
You don’t have to drain the tank or disconnect any gas lines.  Although, it wouldn’t hurt to turn the gas off at the water heater line by twisting the valve into the horizontal position.
 
I thought you might want to add this info to your “do-it-yourself” site.  It saved me $150. 
Honeywell and Sears/Home Depot/etc. would encourage you to waste the money on a new part.  Thank God for the internet! 
And thanks so much for the clear directions on your website!

 Bob Robertson
Read more

Gene adds: Thanks for your contribution, Bob ... a lot of folks read this page since it was posted Jan 2016 ....
Also ... according to the service manual on pg 5 and 21, 4 blinks can mean a failed gas control which Sears confirmed, but it can also be a tripped ECO (energy cut off which trips when temperature of water inside tank exceeds 199°F ) ./... the temperature probe is a thermistor which changes resistance (measured in ohms) when water temperature changes ... the gas control interprets change in resistance as change in water temperature ... however, since the thermistor is electromechanical, then a temperature of 199° could be simulated onto the thermistor by electrical charge from nearby lightning strike .... the lightning could also destroy the gas valve of course .... resource: why you need ground wire .... but if the problem is tripped ECO, then the supposed repair is to turn gas control knob to OFF and wait minimum 5 minutes before re-lighting.
Honeywell gas control valve for residential atmospheric vent models
Temperature range Low 55° - very hot 160°
 Average bath 110°104°F, typical water heater temp 120° . Severe scalding risk over 135°
ECO (energy cut off located inside gas valve probe) limit 199° F, Basic water heater parts
TP release water at 170°F and 150 psi. TP valve code
TCO located on front of combustion chamber trips off at 180°F What-is-a-TCO
All calibrations are approximate

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Step-by-step how to replace Honeywell gas control valve
WV8840 Gas control valveLarger image
Disassemble Icon gas control
Temperature sensor, igniter and gas control can be replaced without draining tank.
Backplate remains installed.
How to replace Honeywell gas control valve

How to replace Honeywell gas control.
1) Unplug wires and disconnect piezo igniter
2) Remove 1 screw. On front bottom below plastic cover is 1 screw located on left side.
3) Remove plastic cover. Tip plastic cover out from bottom, and then pull straight back toward you and cover snaps off. Caution: plastic cover is connected to body with 3-strand yellow-orange-white wire.
4) Disconnect yellow-orange-white wire. Wire is plugged into circuit board on plastic cover. Grasp wire and pull upward to unplug wire from circuit board..
5) Remove valve body from backplate. There are 2 plastic clips that hold valve body to backplate. These are located at bottom on right and left side. Use screwdriver to push 1 clip down while while using another screwdriver to pry valve body outward. Then use screwdriver to push down other clip to release valve body.
Honeywell gas control
Larger image
Gas valve will NOT leak if the cover is removed.
Circuit boards vary by gas valve model number and circuit board from another heater cannot be 'plugged' into another valve.
Larger image
Cautions
Do not take apart the gas valve.
If aluminum cover is removed to expose magnets as shown in photo, the gas valve WILL leak.
There are NO replaceable parts inside the gas valve.... picture is for informational purpose only.

Do NOT reuse a gas valve that has been taken apart as shown in this photo.
Do not reuse gas valve from another heater .... each gas valve has a specific model number, and gas valves vary by type of gas, BTU rating, manifold pressure etc.
Circuit boards vary by gas control and cannot be 'plugged' into another valve.
gas water heater timer Gas water heater timer
Use timer or home automation
Models fit Honeywell gas control, natural gas and propane, and also older style mechanical gas control valves.

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Back to 10 things for troubleshooting water heater
Icon gas valve
For atmospheric vent models
Range Low 55° - very hot 160°
Average bath 110°F, typical water heater temp 120°
ECO limit 199° gas valve fails
TP release water at 170°F and 150 psi
All calibrations are approximate
Severe scalding risk over 135°
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Honeywell gas control at Amazon
American / Honeywell gas control at Amazon
Honeywell gas valve for propane
Honeywell natural gas valve
Reliance NG at Amazon
Reliance LP at Amazon
Kenmore water heater gas valve
Gas water heater timer fits this valve
Replacement instructions
How to test & replace Honeywell gas control valve
How to replace Honeywell gas control valve

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Error codes
To reset gas control, rotate dial to OFF, wait 10 minutes for gas to clear. Then relight.
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Error light blinking 4 times
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For power vent models
Range Low 90° - very hot 160°
Average bath 110°F, typical water heater temp 120°
ECO limit 199 style="f;" F, ECO trips, gas valve fails
Average bath 110°F
ECO limit 199° F
TP release water  at 170°
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Reliance NG at Amazon
Replacement instructions
How to replace water heater gas valve

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Error codes
Error codes2
Error codes
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Bradford White service manual 2
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Safety
Water heater safety precautions
Water heater precautions/ pdf
Gas-water-heater-Safety-Precautions
Gas valve safety
Thermal expansion
Insulation blanket

For power vent models
Range Low 80° to Hot 150°
Error C flashes at 160°
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Promax gas water heater manual
For resetting controller: After the unit has been off for at least a minute, plug it in, turn on the switch; within a few seconds, depress both arrow buttons on the controller, and hold them until the left light begins to blink.  Release them, and within a few seconds, push those arrow buttons in the following sequence:  L/R/L/L/R/L/R/R.  This should reset the controller.
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Remove gas valve
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gas valve setting
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Honeywell Smart Valve
Larger image

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Robertshaw Natural gas control valve
Robertshaw Natural gas
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14 things needed for gas water heater & .pdf resources
What you need for operation of gas water heater.
Next pages
1) Basic parts and operation
2) Adequate incoming air supply ... issues: closed doors, tightly insulated house, very hot attic.
3) Adequate air supply getting to burner... issues: dirty vent screen, dirty environment, maintenance.
4) Thermal cutoff  ... TCO ... issues: failed part, maintenance, vent.

5) Flammable vapor lockout .... issues: exposure to vapors, bad FV sensor, failed FV system,
6) Fuel supply to gas valve thermostat ... natural gas and propane are different ... issues: wrong gas, low pressure, moisture in pipe, undersized gas meter, supply line too small for BTU rating.
7) Gas valve thermostat regulates fuel supply ... issues: not enough gas, failed thermostat, failed gas control valve.

8) Fuel supply from thermostat to burner ... issues: maintenance, thermocouple-thermopile, gas control valve.
9) Clean and replace burner ... issue: periodic maintenance requires burner inspection, cleaning, and possible replacement

10) Functioning thermopile-thermocouple-pilot light ... issues: misalignment, failure of part.
11) Ignition of fuel supply by pilot light or hot surface igniter ... issues: pilot light, piezo igniter, electrode.

12) Power vent water heater troubleshoot ... issues: pressure switch, blower, blower sequence from gas control, outlet polarity
13) Venting combustion byproduct .... issues: vent in disrepair, other vents in house drawing air

14) Misc troubleshoot manuals
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