What does flammable vapor sensor in hot water tank mean?

My control unit produced a sequence of 7 flashes, which indicates that I have a faulty flammable vapor sensor (FVS). The FVS is a relatively newer’ish invention that consists of a silicone type sensor that detects flammable vapors outside of the hot water tank.

Is the vapor sensor on a Rheem water heater flammable?

Hunker may earn compensation through affiliate links in this story. Never try to modify or bypass the flammable vapor sensor on your hot water heater. Certain Rheem water gas water heater models feature electronic controls with a flammable vapor sensor installed on the bottom portion of the water heater unit.

Is there a way to reset the flammable vapor sensor?

Luckily that error code can easily be reset and you will have hot water again in less then an hour. The reset procedure will vary depending on which gas valve you have. Before resetting the flammable vapor sensor, make sure there are no flammable vapors or containers near the water heater. Here are the different gas valves and how to reset them: 1.

What to do if your water heater vapor sensor is faulty?

If the reading on your multi-meter reads below 9k or above 45k ohms, the flammable vapor sensor is faulty and in need of replacement; you cannot reset the system until this issue is resolved. 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.

How old is Rheem HWH flammable vapor sensor lockout?

The model number is 43VP50E2. The unit is only 6 months old and was originally installed at another location. It worker at the first house but has never worked at the second house. The pilot and blower used to come on at the second house but nothing goes on any more.