Flammable Vapor Sensor Lockout Rheem. Finally, turn the switch to the “on” position to reset the vapor sensor witch. Firstly, take away any flammable products from your rheem water heater’s place that may trigger the rheem vapor sensor.
I called up rheem and they sent out a replacement sensor, but of course it was a friday night which meant no hot water for days. Reconnect the molex connector to the bottom of the control pad, reconnect the water heater's power if and turn the blower switch to the on position. Reliance water heater 9007876 gas thermopile assembly, pack of 1.