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The gas valve does not respond to controller demands.
- Manually reset the water heater.
- Observe water heater operation. If fault code occurs again, reset the water heater and:
- When water heater attempts to fire, check voltage at the gas valve connector. If there is voltage, but no gas pressure on the outlet side of the valve, the valve is stuck closed. Replace the gas valve.
- If there is no voltage at the ignition phase, replace the control board.
