Sensor failure sometimes the sensors that read the temperature of the water can fail which is difficult to detect without using a multimeter to measure the temperature sensor for a shorted circuit.
Whirlpool gas hot water heater temperature sensor failure.
7 replace gas valve overall failure of the gas valve and will usually require replacement.
If you get this code and have lukewarm water and the pilot is still on try turning up the temperature.
It should not be set above 125 degrees f.
If you use the hot water which i now have to turn a little hotter than normal to get my desired temp then it eventually goes away and flashes normal operation 1.
Check for power at both elements.
5 replace gas valve this indicates a sensor failure and the gas control valve must be replaced.
Refill the water heater before you flip the house circuit breakers on and restore power.
Before replacing the thermistors temperature sensors i recommend shutting off the breaker and checking the plug for the thermistors on the control board.
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Remove the cover panel exposing the burner assembly standing pilot or burner manifold cover plate electronic ignition.
Troubleshoot a water heater that puts out overly hot water.
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Internal sensor failure the information on this web site is supplemental to the printed instructions that came with your water heater.
Sometimes sensors simply become loosened and you must reattach them to the water tank.
My honeywell water heater gas valve control is giving the 5 flash code sensor failure.
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Close the shutoff valve on the gas supply piping to the water heater.
Turn the gas control valve on the water heater to the off position.
Check the temperature set screw.
If the sensor does have a short it requires replacement.
To reduce the risk of property damage serious injury or death read and follow all labels on the water heater and the safety instructions in the printed owner s manual.
Drain the water heater and then replace the heating element if it failed.
The heating element should measure 5 25 ohms of resistance.
If this error condition continues replace the electronic thermostat.
If you need service support please contact customer service at 1 833 747 0686.
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The image below shows the location of this plug on the control board.