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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” 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. 

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 Robeson
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WV8840 Gas Valve
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Gas valve overview

How to test and replace gas control valve
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.
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Range Low 55 - very hot 160
Average bath 110F, typical water heater temp 120
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Range Low 90 - very hot 160
Average bath 110F, typical water heater temp 120
ECO limit 199 style="f;" F, ECO trips, gas valve fails
Average bath 110F
ECO limit 199 F
TP release water  at 170
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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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Temperature range: 100-180F
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