Top 20 Rheem 40 Gallon FVR NATGAS Low WATER HEATER 6YR 22V40SF Questions & Answers

The water heater uses a thermocouple to generate a small voltage from the pilot light. This voltage is used to blink the led and allow the main gas jet to turn on. Either your thermocouple or the wiring from it has failed and needs to be replaced, or realigned if perhaps it moved out of position above the pilot light.

Some of the old gas water heaters used electric water heater thermostat. Just use a standard thermostat. http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html http://waterheatertimer.org/http://waterheatertimer.org/Add-another-thermostat-to-gas-or-electric-water-heater.html http://waterheatertimer.org/How-to-replace-thermostat-on-gas-water-heater.html Gene Water Heater Timers Save Money If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

It sounds like it's doing it's job, by not letting your water heater turn into a missile, or exploding....The "T" in T&P stands for temperature. When it gets too high, the valve will open. The "P" in T&P stands for pressure. When IT gets too high, the valve will open. When they both get too high...you know the rest...The condition can be caused by many factors. 1. The house "pressure reducing valve" is letting in too much pressure. Any more than 80 lbs. is too much. 50 to 75 is good. 2. Hot water expansion in a closed loop system...no "prv" or "water meter" bypass...To fix, you can install a small "expansion tank" above the water heater. It will allow the extra bit of water to go somewhere temporarily, Letting the T&P valve stay closed. Installation is always on the hot outlet side, because high efficiency water heaters use a "check ball" in the factory installed cold water inlet nipple, which also doubles as a dip tube. (lets cold water into the heater at the bottom) When a gas fired water heater turns on, there is a pretty fast spike in both temp. and press. 3. The gas control valve itself, has a non resetting 190 degree, "high limit" safety shut off feature. IF that were to fail, the control would run away temperature wise, but I have never heard of one failing. regards!

no. propane burns much hotter than natural gas, and has higher pressure gas valve and burner and orifice must be changed to switch between natural gas and propane http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html Most manufacturers do not support converting gas on heater. Gene If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

You can reset some models.... depending on gas control valve and FVIR design. Some newer models you replace the sensor located on outside of tank. http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent http://waterheatertimer.org/How-flammable-vapor-sensor-works-Therm-O-Disc-25VS.pdf Gene If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent gene If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Order glass vial from Rheem http://waterheatertimer.org/How-to-repair-Rheem-FVIR.html Gene Water Heater Timers Save Money If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Replace flooded water heater http://waterheatertimer.org/Flooded-water-heater.html Troubleshoot by type of gas control valve http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent gene Water Heater Timers Save Money If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

the flue doesn't stay warm creating a draft...if you are not using it, you can cap it off

Replace the whole gas valve assembly

If heater has a sealed front door the air intake filter is probably clogged. Remove the door and vacuum out all the dust and debris in the inside. Then use an air compressor to blow down thru the filter and force out any dust caught in the underside of the filter. Reinstall assemble heater and relite. If problem continues replace the gas control. If unit does not have sealed door just replace the gas control

Copy following link to identify gas control valve: http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent Gene h If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Copy following links:http://waterheatertimer.org/How-to-test-water-heater-thermocouple.htmlhttp://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.htmlhttp://www.thetankatwaterheaterrescue.com/forums/forum3/Geneh If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Copy following link for replacing gas control valve thermostat on water heater:http://waterheatertimer.org/How-to-replace-thermostat-on-gas-water-heater.htmlGene If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Copy following links:http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.htmlhttp://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intelliventhttp://www.thetankatwaterheaterrescue.com/forums/forum3/Gene If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Drain valve should be located on bottom of water heater.http://waterheatertimer.org/Water-heater-will-not-drain.htmlhttp://waterheatertimer.org/images/Marathon-drain-valve-2.jpghttp://waterheatertimer.org/How-to-replace-water-heater-drain-valve.html If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Troubleshoot by type of gas control valvehttp://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intelliventRepeated 3 flash on power vented honeywell gas control thermostat means system in lockout.http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.htmlRepeated 3 flash on atmospheric-vent Honeywell gas control valve means temperature sensor failure.Take apart gas control, and buy temperature sensor if sold separately at AO Smith dealer.http://waterheatertimer.org/How-to-replace-Honeywell-gas-control-valve.htmlAdd a comment with more information If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Copy following links:http://waterheatertimer.org/Water-heater-dip-tube.htmlhttp://waterheatertimer.org/Crossover.htmlhttp://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intelliventhttp://www.thetankatwaterheaterrescue.com/forums/forum3/ If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

You don't, the pressure valve is a safety feature and you don't fix them you replace them.

1) Copy following link for general steps how to take apart combustion parts:http://waterheatertimer.org/How-to-replace-thermocouple.html2) Copy following link for troubleshoot-igniter pdfs:http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html3) Newest gas water heaters require replacing whole combustion assembly.Older models can be taken apart and igniter replaced separately.4) Unfortunately Rheem does not post service manuals, or show basic service steps in their product manuals. Parts vary by model number If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7