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John wood water heater - Heating & Cooling

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Blower runs continuously

Posted on Nov 26, 2010


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017


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I have a John Wood powervented gas water heater, model 322152-001(13-05). The temp pressure relief valve is leaking. How do I operate/reset the valve manually?

There is a leaver YOU CAN PULL up but this may not stop the valve passing it may wash any dirt of the seating ,It may be best to change the valve .

Dec 19, 2016 | Water Water Heaters

1 Answer

Can not find the instruction manual for my III Woods #50016 outdoor timer. I do not know if it is similar to any of the other Woods timers that you've already answered questions for.

Here is the manual Janet

[PDF]Timer Instructions in English
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Woods 50016 digital timer for use with engine block heaters. Refer also to enclosed directions for additional safety cautions and Spanish and French translations. Set timer to supply electricity to your vehicle's engine block heater 2 to 3 hours ...

[PDF]Woods 50016 timer manual - Water Heater Timer
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Woods 50016 Digital Timer for Engine Block Heater: ...
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Rating: 2.2 - ‎8 reviews Set timer to supply electricity to your vehicle, s engine block heater 2 to 3 hours before ... Woods 50016 Outdoor Digital Block Heater Timer, 24-Hour. ... rating: 15A, 1875-Watt; tungsten rating: 10A, 1250-Watt 8A ballast; controls up to 1/2 HP. .... This causes it to go into a setup phase and not provide power to my block heater.

Nov 15, 2016 | Woods Hardware & Accessories

1 Answer

My heater core was plugged on the end going into

I would connect the hoses that come from the engine to the heater core together get rid of the wood and find a connector. To bypass the leaking heater core.

Sep 20, 2014 | Cars & Trucks

1 Answer

I have a John wood GSW water heater, JW317RF that will not come out of "lockout mode". I have reset the water heater numerous times and it will seem like its going to run but never ignites. I have bled it...

id say the draft u feel is normal (if it wasn't fumes wouldn't exit the home) lock outs usually occur when there is a fault to exist in the burner circuit (detected) like the flame proving sensor being defective(very common) or no draft fan running , you ill need to do a little more looking to determine what is needed

May 28, 2017 | Water Heaters

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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.

If this heater is located in a "confined space", has the "make up air" entry point(s) been restricted/blocked? In short, is there enough air present to support combustion AND to supply enough air for the power vent to move the gases at a reasonable rate to the environment?

Can you "feel" the gases coming out the vent at a reasonable thrust? Is the power vent blower motor making any noises (not rotating properly, i.e., bad bearings)? Does the vent have any debris at the end, possibly at a screen?

Is the T&P valve dripping water? Is there ANY water on the floor? Is there a thermal blanket on the heater? Is the blanket wet anywhere? Did you recently add a thermal blanket? (Some manufacturers DO NOT recommend a blanket.) Have any liquids been spilled on top of the tank? Is anything dripping on the tank?

Is the burner flame crisp, not "lazy"?

"Recently I've been smelling products of combustion coming out the top of the tank where the vent is". There is a negative pressure present at the top of the tank where the vent is - in a properly drafting vent pipe assembly. This means that vapors, odors, and moisture ARE BEING SUCKED OUT of that area under and through the hood and then into the piping. "and when blew some smoke at the vent, it drafted up through the vent no problem". Try to identify the real source of the odor.

Lastly, I think this model uses a direct connection technique from the blower/power vent termination to the piping without a hood. So if you blew smoke at the vent, and there is no hood, how would the smoke get into the vent? If the 2" vent is PVC or CPVC, and if the gases are being slowed because of any reasons mentioned, maybe the plastic piping is slowly cooking.

Feb 02, 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:

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

My john wood hot water tank over flows through the relief valve every 3 - 6 months. The hot water is too hot and I can't seem to adjust the Aquastat L4103 on the hot water heater to a good temperature....

There should be plate on the front of the hot water heater tank.. Pop that off..
There might be some insilation to move and you should see a set screw for adjusting the temp..
If there are no indications for hotter or cooler - then do a 1/8 turn to a 1/4 turn counter clockwise..

Hope this helps !I
rate me good ;o)

Jul 14, 2009 | Honeywell Heat/Cool Thermostat

2 Answers

Water Leak from the hole where drain valve is attached

Time for a new water heater, it's leaking there because that's where it can get out - tank shot - not repairable. (Unless it's actually leaking out of the drain valve(which can be threaded out and replaced) but that would only leak if someone has tried to open it.)

May 05, 2009 | Heating & Cooling

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