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Rheem 21vp40 1

The exhaust vent keeps runs but does not ignite. No pilot light. The vacuum switch is working I know. Any suggestions?

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6ya6ya
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Posted on Jan 02, 2017

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CRTN
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SOURCE: pilot light wont lit up

Change The Thermostat Cause If Your Getting Gas But The Water Heater Doesn't Detect The Heat It Will Close The Valve. When Lighting You Hold The Button Down For About 30 seconds so the thermostat will detect flame and stay lit. Check To Make Sure The Thermostat Is Where It Should Be. Heres A Picture Of What It Will Look Like.

a6523d8.jpg
You Can Replace Them If Need Be Will Be Available At Sears Or Home Depot. Also They May Sell Them At other Local Hard Ware Stores.

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Michael Scott

Posted on Jan 19, 2009

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  • 2557 Answers

SOURCE: We have an older Rheem Fury (gas) water heater and

Hi I would try changing the thermocouple

Posted on Jan 24, 2010

  • 13 Answers

SOURCE: rheem model 41vrp40n power vent water heater won't

"Pres sw open" means there is insufficient air flow. either the vent if blocked, or the blower turns too slow/ or died.

Posted on Feb 12, 2010

  • 494 Answers

SOURCE: I have a Rheem direct vent gas water heater. When

Hello,
If you are not seeing a spark at the pilot assembly where the pilot flame lights, then it is probably not sparking in the right place. You may have a short in the wire or a cracked porcelain ignitor, causing it to spark elsewhere. If you can remove the access panel, you may have to relight the pilot manually with a butane lighter. To resolve the issue of the flame blowing out, make sure your vent outside has a cap on it and that the vent is not partially blocked with a bird nests, etc. Hope this helps. Douglas

Posted on Jun 27, 2010

Testimonial: "Thanks"

SOURCE: I have a Rheem Power

I see your question posted under JJ, and will also watch for the answer.
The Tank has amazing amount of water heater information. But the industry is also changing very fast.

Posted on Feb 20, 2011

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1 Answer

Rheen PVW50 Hot Water Heater Making Buzzing Noise and Doesn't Light


Why is it always Rheem problems?
Every water heater problem is Rheem.
And Rheem doesn't post any service manuals, like the other two big manufacturers, AO Smith-American, and Bradford White.

Copy following link for troubleshoot by gas control valve.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Scroll up and find pressure switch heading among links.

You can install gas control valve yourself.
http://waterheatertimer.org/pdf/How-to-replace-water-heater-gas-valve.pdf

Sep 06, 2012 | Rheem Water Heaters

1 Answer

I have a rheem power vent 21vp75e-1 it ignites the burner for couple of seconds and shuts off and retry to ignite into a lock out I wire jump the vacuum switch and it works properly than i replace the...


Before calling service technician, read manual for troubleshooting and yearly maintenance requirements.
Open following links to identify same-similar product and download manual.
Once you have product showing on page, click 'specs-docs' tab to see use-and-care manual.
http://www.rheem.com/product.aspx?id=C24E3F52-A6A4-4BC7-AF5B-0DF23A7A0263
http://www.rheem.com/Products/tank_water_heaters/gas_water_heaters
http://globalimageserver.com/fetchDocument.aspx?id=c0471d58-5e59-4be6-96f7-68361b8fb515
Rheem site loads slow, and some manuals never load.
Typical power vent manual:
http://waterheatertimer.org/pdf/Rheem-power-vent-manual.pdf

I believe the 21VP is older and Rheem does not show older manuals, but manuals are generally generic enough to help greatly. Year of manufacture show as second and third digit of serial number.

Lockout condition requires service technician and part replacement, or call Rheem and have them send part.
I found one link that talks about FV lockout that may or may not pertain to your issue:
http://www.diychatroom.com/f7/rheem-hot-water-heater-pilot-burner-not-staying-lit-65755/

Apr 19, 2011 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

I have a Rheem Power Vent hot water heater. Model 21VP50E-1 A. The hot water heater makes hot water and keeps up with demand. Problem or no problem: main burner cycles on and off in about 5 second...


I see your question posted under JJ, and will also watch for the answer.
The Tank has amazing amount of water heater information. But the industry is also changing very fast.

Feb 18, 2011 | Water Heaters

1 Answer

We had to turn the gas off to connect the dryer, now we can't get the pilot light to turn on. we followed the directions on the water heater 5 or 6 times with no luck. It seems the pilot light will not...


I would suggest that you remove pilot assembly from gas valve and burner and clean pilot orifice and see if that helps. Be careful when cleaning hole in the orifice so you don't enlarge the hole. Good luck and thank you.

Jan 02, 2011 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

Rheem Power Vent model RN 21-VP40-1 gas water heater no hot water but venting runs. Is it the ignitor or the thermostqat? About 10-12 years old.


it may be the thermal coupling that is bad for the pilot light. if it goes bad the flame will go out. replace thermal coupling. so if the pilot light is out then it will not heat water. or turn burner on.

Oct 28, 2010 | Rheem Water Heaters

1 Answer

I have a Rheem Power Vent propane water heater model3 21VP4OE-1P that is acting up. The pilot lights and then the burner lights, but goes off after 5 - 10 seconds. It cycles like this 2 or 3 times, then...


check the thermal coupling for the pilot light. if it goes out it will shut down gas supply, its a safety feature to put out pilot light if the thermal coupling is bad. to prevent gas from leaking and causeing a fire. check coupling.

Aug 12, 2010 | Water Heaters

1 Answer

I have a Rheem direct vent gas water heater. When


Hello,
If you are not seeing a spark at the pilot assembly where the pilot flame lights, then it is probably not sparking in the right place. You may have a short in the wire or a cracked porcelain ignitor, causing it to spark elsewhere. If you can remove the access panel, you may have to relight the pilot manually with a butane lighter. To resolve the issue of the flame blowing out, make sure your vent outside has a cap on it and that the vent is not partially blocked with a bird nests, etc. Hope this helps. Douglas

Jun 27, 2010 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

Rheem gas water heater it won't stay lit...will lite up and go off after 20 seconds or so. If I leave it sit for 20 minutes the exhaust fans blows but no flame and I have to turn off gas and refire up to...


For the main gas valve to come on several conditions need to be met.

The system must detect a pilot light prior to turning on the main gas valve for systems with a standing pilot light (not sure what your system has) and on systems with auto igniters (spark or ceramic heat glo) the control board must detect a flame present at the main burner a few seconds after the main gas valve turns on.

The other condition that must be met on systems with power exhaust systems is a vacuum/pressure diaghram switch must be made and stay made telling control circuits that vacuum/pressure is present = power exhaust fan is on and working.

From your description it sounds as if you may have a dirty/failing flame detector (thermocouple). Remove it and give it a good scrubbing with a scotch brite pad etc. cleaning off any carbon or corrosion/gunk re-install and try it out, or simply spend $15.00 or so and install a new one to be sure. The thermocouple is the metal thin tube that protrudes into the pilot and/or main burner flame and is connected to the main gas valve by a thin capilliary tube.

To check the vacuum swich on the blower a multi meter across the switch terminals looking for a steady "state change" as the blower runs/stops will work.

Oct 24, 2009 | Rheem 50 Gallon FVR NATGAS Water Heater...

2 Answers

1 unit intermittently shuts off and other won't ignite


if you have the exhaust run together it will not light up,, they have to be seperate,, the computer board sences the unburnt gasses and will not allow it to start,,

Jun 24, 2009 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

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