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The primary air intake door is shut is there any way to repair it so it will stay open and allow the water heater to work? Or is it time for a new one?

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What type of water heater do you have? Most Residential heaters don't use a door to get air. Can you explain a little more?

Posted on Apr 01, 2011

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Rinnai C53 exterior tankless water heater shuts off when temps go below 15 degrees


might have something to do with the exhaust or intake air. they might have frost built up causing the sensor to not allow the heater to lite

Mar 06, 2014 | Heating & Cooling

1 Answer

Gas not getting to the combustion chamber of water heater


1) Gas control valve might be bad.
http://waterheatertimer.org/pdf/How-to-replace-water-heater-gas-valve.pdf

2) Copy following link to identify gas control valve:http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent
3) Link above has general troubleshoot information concerning each gas control.
4) If FV system tripped due to clogged air intake, then can shut down gas control.
http://waterheatertimer.org/How-to-repair-Rheem-FVIR.html

Less air means slowed venting, but same amount of gas is still burning, which overheats combustion chamber tripping FV system.
Each brand is different: Some air intakes are located on bottom of heater, while other brands, the air intake is located under combustion chamber.


5) Gas control will also fail if thermostat fails and allows tank temperature to reach beyond ECO set point. The ECO is 1-time-use thermal fuse. Replace gas control.

Dec 06, 2012 | Water Heaters

1 Answer

My hot water heater will not stay lit once the pilot light I'd on and it is turned to the on position


Clogged air intake.
Bad gas control valve
Bad thermocouple.
Low gas pressure.
Tripped FV system because air intake clogged, causing overheated combustion chamber that may or may not require replacement parts including new gas control valve.
Call service technician, or copy following links for DIY resources.
http://waterheatertimer.org/How-to-repair-Rheem-FVIR.html
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html
http://waterheatertimer.org/How-to-replace-thermocouple.html

Oct 24, 2012 | Water Heaters

1 Answer

Problem keeping my Rheem hot water heater light


What brand, model, and approximately how old is water heater?
This is important because water heater designs are changing quickly.
Did you remove door over combustion chamber to access thermocouple?
Newer Rheem water heaters have air intake under combustion chamber that has to be blown out using compressed air.
If this is different brand, then use mirror under water heater to see air intake.
Set water heater on bricks to avoid high water. Make sure drain line out of drip pan is 3/4" and terminates in good drainage location.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

Put brass garden hose cap over drain valve.
http://waterheatertimer.org/How-to-replace-water-heater-drain-valve.html

Aug 29, 2012 | Rheem RHG Pro40-40F Pro Series Natural Gas...

1 Answer

Can not get pilot light to stay lit


Hi, Nancy. W/D here.
Water heaters can be a bit temperamental. Here's a few things to try:
1. Make sure that the air intake screen is as clean as you can get it. Some screens are located on the bottom of the heater, and can get so much dust trapped in them that there is insufficient air cor the heater to operate properly, and will shut down.
2. When you ignite the heater, you will need to hold the pilot ignition button for (usually) 1 full minute before switching the regulator over to the operating position. Check your directions that came with your heater for accuracy. The reason for maintaining the lighting position for the minute is to heat the thermocouple up so that the heater can sense the flame, and allow the heater to run. If it doesn't sense that there is a pilot light at the thermocouple, the regulator will not allow the gas to pass into the burner of the heater.
3. If the above items do not correct the problem, the next step would be to replace the thermocouple. Repair parts for the most common types are available at the larger "big box" hardware stores. Replacement isn't too difficult. Remember to shut the gas off first, and always test your connections with soapy water, repairing any leaks (you'll see bubbles), as you go. If any leaks are found, shut the gas back off while you determine your repair path. Note that some connections can be reverse threaded, so look at the threads as you go.
If you get to the point where you need to replace the thermocouple, and are uncomfortable with doing this yourself, by all means hire a competent person to perform the work for you.
Best regards, --W/D--

Oct 23, 2011 | Water Heaters

1 Answer

Pilot wont stay lit on waterheater. I replaced Thermocouple and that did not fix it. It will stay lit on vacation setting.


Most gas water heater problems can be fixed with yearly service that cleans burner and burner parts, checks gas pressure and bleeds air out of gas line, cleans air intake, and checks for venting and air intake problems.
Open following links for resources:
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
http://waterheatertimer.org/pdf/Attic-Ventilation-and-Pilot-Outage-in-Gas%20Water-Heaters.pdf
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Jul 27, 2011 | Water Heaters

1 Answer

Basemnt flooded water heater wont stay lit ever since, taken out burner assembly severl times now stays on long enough to heat water then shuts down soon after.replaced thermocoupler and have to lite...


Sounds like the air intake is clogged, and pilot and burner tubes are dirty.
All manufacturers say that flooded water heater should be replaced and not repaired.

You can clean air intake and burner assembly, and then next step would be to replace burner assembly and replace gas valve thermostat to see if functionality returns.
Expense of replacing parts is about half the cost of new gas water heater from box store, and still no guarantee that old heater will work.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean

Jun 22, 2011 | Water Heaters

1 Answer

Our 40 Gallon Reliance 501 gas water heater stays lit for about 10 minutes and then goes out. Any idea what would cause this or how to fix it?


Many problems are solved by replacing thermocouple, but usually pilot will not light if thermocouple is bad. And some Reliance water heaters, the thermocouple is grouped with TCO and not generic part from hardware store.
If the combustion chamber is sealed with gasket, you might need spare gasket on hand before taking out the burner assembly to replace thermocouple.
http://www.youtube.com/watch?v=v0aBPsNg6vo

Gas water heaters can malfunction for many reasons.
Service tech is best resource unless you have manual and can take time learning parts and how to replace.

Gas water heaters require periodic cleaning of combustion parts and tubes.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Other ez problems include:
Gas shut off valve not fully open and handle is not parallel with gas line, so gas is partially shut off
If water heater flooded, then replace heater.
Excess water vapor from bad venting rusted out the burner parts. Inspect burner for rust.
Not enough combustion air, for example the house was recently weather-tightened, or a louvered door replaced with solid door. Or air intake screen located on bottom of heater is clogged with lint or dust.
Very hot attic can cause pilot to go out.

Trace amounts of pool chemical, laundry chemical, process chemicals, wax, etc can cause damage to burner parts.
Low gas pressure can cause problem.
Air in the gas line.

Bad gas control valve.
If ECO was tripped, there should be no gas to pilot.
Gas control valve might have debris or water from gas line.

If FVIR event tripped FV sensor, that would explain problem, and you would need service technician.

If repairs cost more than $330, then buy and install new 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 24, 2011 | RELIANCE ELECTRIC WATER HEATER

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