Question about Water Water Heaters
If its 1 blink every 3 seconds its normal operation.
Otherwise, this is the meaning of the various blinks:
No blinks = no poilet light (not enough power (in millivolts) to keep it lit.
2 flashes = insufficient voltage (in millivolts) to gas valve.
4 flashes = high water temperature (over heat sensor activated.
5 flashes = water temperature sensor failure.
7 flashes = gas control valve / thermostat failure.
8 flashes = Only occurs if the gas control valve or Temperature knob has been turned off And the thermocouple continued to produce electric power.
9 flashes = Combustion chamber temperature sensor open or shorted.
10 flashes = LDO occurrence was detected in the combustion chamber (contaminants).
Posted on Jun 28, 2019
SOURCE: red light flashing on
More information is needed.
Open following link to help identify your gas valve and access error code.
Add a comment and say which gas valve matches.
Then add what code is blinking for possible help.
Upvote the help.
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Posted on May 31, 2011
SOURCE: red light is flashing on
You have tank-type water heater, but type of water heater and control is not known.
For possible help, add a comment and say if you has gas or electric water heater and describe what type of gas valve or control box is giving the error code.
Open following link to identify some basic types of controls:
Posted on Jul 08, 2011
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