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I have a 20 year old Ruud gas water heater with a power vent. The model is PVP 40-1. Sometimes it will not heat water. The power vent is running but neither the ignitor or the burner is. If I turn off the power switch and gas switch then turn them back on, it will always start the ignitor and burner. Do you know what causes this and what part replacement will fix it?

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My guess is the ignitor needs replacing (old and has built up too much internal resistance). Even though it still works at times, I would suspect it first, even if it glows during an ignition cycle.

Posted on Dec 15, 2014

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I have a 20 year old Ruud gas water heater with a power vent. The model is PVP 40-1. Sometimes it will not heat water. The power vent is running but the burner is not. If I turn off the power switch and...


Hi Rick,

First of all, no one has a 20 year old water heater! What have you been feeding it? Distilled water ???.

While a smart a$& might suggest a new water heater (hey, at that age, it's gotta be on it's last legs and if you don't have an insulating blanket, standby costs are probably very high), but I'm not an S.A.

Power ventilators generally have a pressure sensor somewhere on the air side that tells the system the vent fan is operating, before turning on the ignitor (do you have a standing pilot?) or the main gas valve. The air sensor may look like a bellows with a tube attached.

I'm puzzled that power reset puts things right... What gas switch are you referring to? Do you mean main gas valve?

If the issue is not the vent sensor I mentioned, may be time for the big kids or a new unit. Oooops, I'm not an SA. ??

all the best

Dec 07, 2014 | Water Water Heaters

1 Answer

Have a 40 gallon ruud power vent cant get sensor for 3 days how do i bypass it until then


Not sure, but there are service manuals by type of gas control valve. However Rheem/ Rudd have no service manuals available for their products:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#blower
Another pro resource. EJ is the resident gas water heater pro:
http://www.thetankatwaterheaterrescue.com/forums/forum3/
Gene
h

Aug 18, 2013 | Water Heaters

1 Answer

I have a John Wood one pipe power vented hot water heater. The model number is Jw840nvh-fv-04. Recently I've been smelling products of combustion coming out the top of the tank where the vent is


1) Copy following link for troubleshoot resources by type of gas control valve, Venting resources, and pro water heater forum:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html
http://www.thetankatwaterheaterrescue.com/forums/forum3/

2) This odor can indicate incomplete combustion due to lack of air supply. Get more fresh air to unit. Check that flame is clear blue color. John Wood is American/AO Smith product so air intake screen is located on bottom of unit. Use mirror and flashlight to inspect. Clean with compressed air ad or feather duster.

3) Jw840nvh is 40 gallon natural gas. Natural gas is lighter than air and rises upward, unlike propane gas that is heavier than air. Install gas detector at height correct for type of gas.

4) For safety, install CO carbon monoxide detector

5) Review product manual for correct vent lengths and diameters.

Feb 02, 2013 | Water Heaters

1 Answer

Wiring diagram on whirlpool gas water heater


Whirlpool is AO Smith tank-type heater.
Year, model, type of heater not known.
So add a comment and then expert can look up the manual.

You probably have power vent, or dampered water heater, otherwise the only wiring would be for thermopile, thermal reset, and igniter.
Power vent, or dampered, of flow control water heaters plug into outlet, and wires from gas control run to the various components.
Copy following link to troubleshoot by type of gas control valve:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html
http://waterheatertimer.org/Review-AO-Smith-Effex-water-heater.html

Don't forget to add comment and include model number that shows on label located side of tank.

Sep 21, 2012 | Whirlpool 6th Sense 40-Gallon 6-Year Tall...

1 Answer

Our Rheem gas water heater was acting finicky a few months ago so we called the manufacturer and they sent us a new/replacement kit for the Invensys WIPER Electronic Control & FV Sensor. We replaced...


You're probably in for a service call and/or possibly water heater replacement if unit is more that 5-6 years old.
Your water heater plugs into outlet. Check outlet with cheap circuit analyzer to make sure the unit is receiving correct polarity without line interference.
If unit is in the attic, then add more venting to soffit and roof so pilot is not being snuffed out by hot air. If unit is in basement, then open some doors and a window and see if unit needs more air.
Most gas water heaters require yearly cleaning and service.
Clean the combustion parts and tubes.
Clean the air intake.
Have gas company check gas pressure.
Open following link for possible illustrations:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

The problem can be bad gas control valve, air in gas line, low gas pressure, gas shut off handle not fully parallel with gas line, dirty combustion parts, lack of combustion air, improper venting. Or combination of all things. It's an electronic gizmo, anything can be bad or shorted, and repair may not last long.

Without a trained service technician to ohm-test the parts using correct service manual, then we are guessing at the cause.

Power vent water heater implies that you have side wall venting which must be replaced with another side-wall vented unit -or- it implies rapid reheating of water.

If water heater is more than 6 years old, you might be money ahead by installing a new one from local box store. Avoid the power vent and electronics. Local box store will have passive roof-venting type water heater BUT box store does not sell side-wall power vent. If your power vent goes up through the roof, then box-store variety gas water heater will work. Total cost $350 do-it-yourself for 40 gallon gas.
Or get 40 gallon 240Volt electric for $220 and connect to circuit breaker box. Requires no venting, and is easy to repair for years to come.
Or small 120Volt electric that plugs into outlet to tide you over until gas repairs can be made.
Look for scratch-n-dent models and always offer 10% off.
http://waterheatertimer.org/How-to-install-gas-water-heater.html
Shower uses 5-9 gallons hot water.

Aug 01, 2011 | Rheem Water Heaters

1 Answer

Hi i have a power vent water heater model #-6g40pvw-40f. It go's into lock down mowed one light lit on vaction two more on A-and B is it the heating element or lighter mechanison thank you mike from...


Hello Mike,
Check gas pressure, burner parts need to be cleaned, check electrical outlet, hot surface igniter is bad

White Rodgers intellivent error code:
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html#Intellivent
http://waterheatertimer.org/pdf/Intelli-vent-gas-valve2.pdf

Error code says: system in lockout, but you know that.
1) Low gas pressure, no gas to water heater: call gas company to check pressure
2) Hot surface igniter not positioned correctly: inspect and clean burner parts.
http://waterheatertimer.org/images/Reliance-hot-surface-ignite.jpg
3) Low voltage to water heater/ outlet has wrong polarity: Use circuit analyzer on electrical outlet to make sure polarity is correct

Typical power vent manual:
http://waterheatertimer.org/pdf/Reliance-40-50-power-vent.pdf
Cleaning water heater:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean
http://waterheatertimer.org/pdf/How-to-clean-combustion-chamber.pdf

Jun 19, 2011 | Audiovox Richmond 6G40-36F 6-Year Tall Gas...

1 Answer

I have a Kenmore Econominder water heater. Model 153-332040 40 gal natural gas/direct vent WH. The last several days it starts up and runs for about 10 seconds 1-2 times before it stays on and heats up...


Water heater burner assembly and combustion chamber probably needs clean and maintenance.
I suggest calling sears service 1-800 469-4663 or plumber.

I'm on Sears/ American/ Rheem/ Reliance etc gas water heater websites most days, and read gas water heater manuals continually.
http://www.sears.com/shc/s/search_10153_12605?keyword=kenmore+power+miser+9+40+gallon+gas+water+heater+gas
http://www.sears.com/shc/s/s_10153_12605_Appliances_Water+Heaters_Natural+Gas

Most people don't fix air conditioning without knowledge going in, but people think water heaters are simpler, because water heaters were simpler a few years ago.
Today, gas water heaters require testing equipment, and specialized tools, plus replacement parts.

Possible problems include: Improper fuel-air mixture, dirty air intake, venting problems, gas control valve problems, air in gas line, low gas pressure, dirty combustion parts, Water condensate dripping on burner, chemicals stored inside same room. Service technician will review all these things during troubleshoot, and you can watch technician and glean information for keeping water heater working longer than warranty.
http://waterheatertimer.org/Replace-anode-rod.html

If repairs are going to cost more than $400, then install new gas water heater yourself same day:
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Upvote the help.
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.

May 23, 2011 | Water Heaters

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

Rheem power vent motor doesn't shut off


There could be blockage in your water heaters venting on the outside of the home. It sound like the high limit switch has been tripped. Try unplugging the tank and plugging it back in. this will reset the tank. if the problem persists you will want to call your provider for service.

Oct 07, 2009 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

No hot water


Aquastar 1600H NG Natural Gas Tankless Water Heater Bosch AquaStar Model 1600H NG Natural Gas Whole house tankless gas water heater, 117,000 Btu input, natural draft with hydro-generated ignition. Provides endless hot water for one major application at a time . Can replace 40-gallon storage tank water heater. Optional Accessory: Model AQ1- Power vent with built-in... More freeze protection when venting horizontally. Capacity: 1 to 2 Bathrooms Dimensions: 8.75D x 18.25 W x 29.75H Weight: 40 Max GPM @ 45F Rise: 4.2 Energy Factor: NG .80 LP .84 Minimum Input: 28,000 Maximum Input: 117,000 Vent Size: 5 Gas Connection: 3/4 Water Connections: 1/2 Warranty: 12-year warranty on heat exchanger, 2-year on parts Features: Endless hot water Can save up to 50% off utility costs annually Perfect for one major application at a time No standing pilot, hydro generated

Mar 01, 2009 | Bosch 1600H-NG Natural Gas AquaStar...

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