Question about Rheem 40 Gallon FVR NATGAS Low WATER HEATER 6YR 22V40SF

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ECO failure. Replaced the gas control thermostat & vapor sensor

Powervent water heater. 40 gallon. lp gas.

ECO failure. Replaced the gas control thermostat and flammable vapor sensor. Worked for approx. 1 hour and then quit and gave the code for ECO failure again.

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It sounds like your gas/air mixture needs to be adjusted. The flame should have just the slightest amount of white, at the very tip. The rest should be evenly blue. There is an air vent adjustment in the line to the burner, right after the gas input.

Posted on Sep 03, 2009

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Posted on Jan 02, 2017

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Reset lock out due to fvd


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

Jun 04, 2014 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

50 gallon **** power vent LP with flammable vapor sensor problems can you bypassing


You can't bypass a flammable vapour sensor. it works on resistance not continuity. You can try moving the sensor outside for a while and it may reset itself...meaning that the resistance may fall back within range. You are best to have the sensor replaced by a qualified technician who can also verify that you do not have an underlying issue such as a gas leak which is causing the sensor to trip.

May 10, 2014 | RHEEM 50 Gallon FVR NATGAS Water Heater...

1 Answer

Pr sw failed to close


Troubleshoot by type of gas control valve
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Repeated 3 flash on power vented honeywell gas control thermostat means system in lockout.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

Repeated 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.html

Add a comment with more information

Mar 23, 2013 | Rheem 40 Gallon FVR NATGAS Low WATER...

2 Answers

My Rheem water heater is giving a ECO failure, How can I fix this?


Question posted under Rheem water heater.
Model number and gas valve are unknown. Add a comment.

Following information applies to typical tank-type gas water heater, and does not apply to tankless water heaters, boilers, indirect heaters, solar water heaters, etc or for electric water heater.

Electric water heater ECO is located on upper thermostat.
Open top cover and ECO can be reset by pushing in red reset button,
Or ECO can be replaced by replacing thermostat. Add a comment.

Open following link to see typical tank-type gas water heater ECOs:
http://waterheatertimer.org/images/Intellivent-ECO-900.jpg
http://waterheatertimer.org/images/Typical-gas-valve-500.jpg

The ECO will trip at 180-200 degrees F.
This happens when the thermostat fails, then the burner stays on, and the water will continue heating.

With most water heaters, the ECO is one-time use device and the gas control valve is replaced.
Some water heaters have resettable ECO, but the overheating problem has to be solved.
Each water heater is different.
Contact Rheem or read manual for correct procedure.

If you have intellivent gas control valve, open following links for typical service manual:
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html#intelli
http://waterheatertimer.org/pdf/Intellivent-service-manual.pdf

More resources:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Sep 30, 2011 | Water Heaters

1 Answer

It says if my ECO has tripped the water tempature has exceeded 200F. What would cause the tempature to reach 200F


Question posted under Rheem tank-type gas water heater.
Model number and gas valve are unknown.

Open following link to see typical ECOs:
http://waterheatertimer.org/images/Intellivent-ECO-900.jpg
http://waterheatertimer.org/images/Typical-gas-valve-500.jpg

The ECO will trip at 180-200 degrees F.
This happens when the thermostat fails, then the burner stays on, and the water will continue heating.

With most water heaters, the ECO is one-time use device and the gas control valve is replaced.
Some water heaters have resettable ECO, but the overheating problem has to be solved.
Each water heater is different.
Contact Rheem or read manual for correct procedure.

If you have intellivent gas control valve, open following links for typical service manual:
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html#intelli
http://waterheatertimer.org/pdf/Intellivent-service-manual.pdf

More resources:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Sep 30, 2011 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

I have a richmond 40 gallon powervent water heater. It seems to light, but shuts itself off after about 5 seconds. I am leaning toward the vapor sensor. I know there are reset codes, but have not been...


1) Could be the vapor sensor. That's a suspect.

2) General troubleshoot: clean burner and combustion parts, clean air intake, bleed air from gas line, check gas pressure. Color of gas flame should be clear blue, and flame should be strong, and no combustion by-product dripping back into combustion chamber. No chemicals of any kind stored in air supply. Plenty of fresh air. Water heater in hot attic needs more air. If water heater has igniter, then igniter has to be checked. Flame sensor must be positioned correctly and operational at time of combustion, or sensor will signal gas control to turn off gas. Gas control valve can be bad.
Open following link for possible illustrations and reading.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

3) Specific troubleshoot begins with identifying gas control valve and reading the service manual.
I think the Rheem/Richmond power vent has intellivent gas control
Open following link to identify gas valve and download possible service manual:
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html#intelli

4) Take a moment and rate answer:
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Sep 04, 2011 | Audiovox Richmond 6G40-36F 6-Year Tall Gas...

1 Answer

Automatic restart is not working. Seems to keep saying eco problem...I thinl...the code is four flashes followed by two flashes.


Gas control valve is not identified, so error code is not known.
ECO means energy cut off.
Energy cut off happens when gas control valve thermostat has gone bad, or when gas control senses runaway heating inside combustion chamber.
Newer heaters have resettable ECO for combustion overheat. This reset is typically located on combustion chamber door and is round and has two wires that connect back to gas control. Generally you have to clean combustion chamber and tubes and catch up on maintenance, then reset ECO, then fire up heater again to see if problem is resolved.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/images/Typical-gas-valve-500.jpg

Newer heater does not have reset for bad thermostat, and in that case you replace gas control valve thermostat.
Older heater does not have reset, and combustion chamber and parts are cleaned, and gas control valve thermostat is replaced.
Your manual is best place to start troubleshoot.
Open following link to help identify gas control valve:
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html

Jul 10, 2011 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

We have a Rheem powervent gas water heater (50 gallon). We can't seem to get the pilot light lit, it won't light at all. The Flammable vapor sensor code flashed. We had a fire in the basement but the tank...


yep, for certain it is the vapour sensor tripped by the paint fumes. I work in the hvac field, on service and at least half a dozen times a year, i go to no hot water calls, due to the sensor being tripped off by kitty litter. the sensor is designed to be as failsafe as possible. Any slight detection of vapor, that could potentially be combustible and the ignition sequence is locked.

Mar 14, 2010 | Rheem 50 Gallon FVR NATGAS Water Heater...

2 Answers

Atwood 6 gallon water heater gets warm not hot. LP


You have a cracked dip tube. Part at hd is under 10 dollars. Remove and replace via cold water inlet side top of water heater. Degree of labor skill 1-10 = 8.

Please Rate.

Apr 04, 2009 | RTO Atwood Water Heater - 6 Gal LP

2 Answers

I painted the floor & my hot water heater (Reehm


The water heater is locked out. The following process should reset it.
1. Reapply power to the water heater and wait for 3 seconds for the system self-diagnostic check.
2. Within the first 30 seconds, the temperature dial must be rotated back and forth crossing the 120
degree mark at least six (6) times. This will reset the control and display a normal flash code
(slow blinking).

Mar 22, 2009 | Rheem 40 Gallon FVR NATGAS Low WATER...

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