I checked that ao smith gas water heater in the laundry room right away.
Honeywell water heater gas control valve reset.
You may have to replace the sensor but first you can try a reset by turning the unit off at the switch on the gas valve wait a minute then turn the switch back on.
The water heater s gas valve is located near the bottom of the unit and connects to your home s natural gas line.
Water heaters covered by this handbook are equipped with honeywell gas control valve thermostats.
Turn the gas control dial to off and let sit for one minute.
Assuming you don t have a power vented unit a 7 flash means the gas control valve has failed and needs to be replaced.
Basics honeywell gas control valve thermostat.
How to fix gas valve or control panel on gas hot water heater honeywell gas valve wv8840b1110 repair and replacement.
It is designed for use in standing pilot applications using an immersion well for water temperature sensing.
If your water heater does not begin working or another lock out condition occurs have a competent hot water heating specialist diagnose the system and make repairs.
Reverse the above steps to mount the new front onto the old back that s still hooked to the water heater.
The wt8840 series is the water heater control for trade use to replace wv8840 valves used in aosmith and bradford white water heaters.
After resetting it several times and bypassing the thermal switch i noticed.
Had to fix a water heater that had the honeywell 5 blinks of death error code.
The honeywell valve uses a thermopile instead of a thermocouple as did previous designs.
The water heater comes with a sophisticated advanced honeywell water heater thermostat valve that provides continuous monitoring of the water temperature and turning on and off the gas accordingly all without battery.
Slide the ribbon of wires out of the clip on the housing and the front of the gas valve is free.
Repeat these steps with the new gas valve.
Turn the water heater s gas valve switch to the off position wait for a few seconds and then flip the switch to the on position to reset the system.
If the pilot remains lit you will need to replace the gas control valve.
Turn off the gas supply valve to your appliance to test whether your valve is capable of shutting down properly.
Residential standard gas water heater service handbook 7.
Locate the hot surface igniter and look for a spark or glow there.
Heat on the thermopile generates.
If you have a power vented unit a 7 flash is a flammable vapor sensor error.