Smith water heater's FV sensor. The blinking status indicator showed 7 blinks which decodes to Flammable Vapor Sensor Lockout. The water heater's gas valve is located near the bottom of the unit and connects to your home's natural gas line. Turn the water heater's gas valve switch to the "OFF" position, wait for a few seconds and then flip the switch to the "ON" position to reset the system. It stopped heating and I'm getting the 8 and 1 FVS alert on the electronic control. Over a 8 year period i'd say mine has tripped about 25 times. Now it's time to wait. Cookies help us deliver our Services. Rheem AP14270G Gas Control Thermostat, Natural Gas . light flashes "flammable vapor sensor lockout" comes on. 5 second delay). The blinking status indicator showed 7 blinks which decodes to Flammable Vapor Sensor Lockout. I replaced the vapor sensor, but not the wiring harness ( I can't seem to find one of these on the intnernet). They're fragile and die if they catch a whiff of many things, and in my case it was bug spray used to kill a nearby basement spider. The Sensepoint range of flammable, toxic and Oxygen gas detectors offer users a high quality, low cost solution to their industrial gas monitoring needs. Close. Continue with turning the tankless water heater back on. That said, I cannot ethically recommend this approach to you or anyone. Once your water heater has been reset, it may take between 12 and 24 hours for your water heater to resume normal operation. The manual showed that the seven digit blinking code was a Flammable Vapor Sensor fault and that the gas valve was locked out. After scouring the internet I found this sensor on Amazon and we were able to determine that Rheem/Richmond are essentially manufactured by the same company. Where is the flammable vapor sensor located? 3 Within 10 seconds of restoring power, press the two temperature adjust buttons simultaneously until the left (green) “Vacation” LED begins to blink (approx. Take a resistance reading between the two wiring terminals of the FV sensor and note the resistance value. The FV sensor is located on front of many water heaters today. After scouring the internet I found this sensor on Amazon and we were able to determine that Rheem/Richmond are essentially manufactured by the same company. — TOD FVS (Therm-O-Disc) Flammable Vapor Sensor or equivalent. 1 Manual reset is accomplished by first, turning off power to the water heater for 10 seconds. Thanks for the response. Flammable Vapor Sensor Location / Testing sensor from it's bracket on the base ring of the water heater and disconnect both wires to the sensor. I installed the new sensor and got the same failure notice. Take a resistance reading between the two wiring terminals of the FV sensor and note the resistance value. Thanks! What cars have the most expensive catalytic converters? Lockout and Resets • Timed lockout resets after 1 hour • 3 auto resets max; then hard lockout • Hard lockout – must cycle power to the control to reset (human intervention) • Permanent lockout – Flammable vapor sensor or control failure. Check for flammable vapors around water heater 2. 5 minutes or so should be enough in most cases. I got Flammable vapor lockout and vented FV part for hours. If its multiple times in a week then i just replace the sensor. there are no flammable vapors present. Hard lockout to be cleared when the power is manually cycled, the control dial is rotated through the HOT setting 7 times within 30 seconds and the resistance of Led indicator flashing 7 times indicating flammable vapor sensor lockout. This was done as a temporary fix until the replacement part could come in on a Rheem Water heater. Sometimes i just reset it and it works for a couple of months. a Capacity based on 1000 Btu/ft3, 0.64 specific gravity natural gas at 1 in. 40-gallon models have a First Hour Rating (FHR) of up to 71 gallons, while 50-gallon models have an FHR of up to 87 gallons. 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. Why does my hot water heater go into vacation mode? I have tried unplugging power vent and leaving the flammable vapor sensor to air for a couple of hours but it’s still … We had our hardwood floors redone and it’s triggered the flammable vapor sensor lockout on our state industries water heater. Verify FVS sensor resistance ~ 9K -45 K 3. How do I replace or reset a honeywell wv4460E flammable vapor sensor lockout it's on a bradford hot water heater - Answered by a verified HVAC Technician This happened a few days ago, around the same time I had my last coat of poly put on my newly finished hardwood floors. As you can see from the picture there is no reset button, no left/right buttons, just on/off switch and temp dial. If you think this could happen again, I recommend picking up some of the same. It does not respond to other types of flammable vapors. I have tried unplugging power vent and leaving the flammable vapor sensor to air for a couple of hours but it’s still got the 7 flashes code. Click to see full answer Likewise, people ask, where is the flammable vapor sensor located? Press the manual valve down, and it will automatically turn counterclockwise into the "Off" position. 2 Restore the power to the water heater. The 25VS chemi-resistive flammable vapor sensor from Therm-O-Disc® is an integral part of the Flammable Vapor Ignition Resistance (FVIR) systems offered by the North American water heater manufactures on residential power vent and high efficiency atmospheric models. After 5 minutes, I would turn the switch back on, turn the knob back to heat and plug in. I did change the FV sensor and it still didn’t work (same 7 flashes). The controls have a restricted lockout safety feature that shuts off the oil heater when flame is detected during the valve-on delay -- or if it isn't detected during the trial for ignition. My control unit produced a sequence of 7 flashes, which indicates that I have a faulty flammable vapor sensor (FVS). Disconnect the gas line and thermocouple from the front of the water heater at the thermostat using a pipe wrench. Posted by 8 months ago. Step 3 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. Go to the home's electrical breaker panel, and turn off all power to the GE PowerVent. These sensors are sacrificial and usually need to be replaced by a Rheem sensor available for $23-ish bucks on Amazon.