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When i shut off the heater last time i just closed the supply line. i am ready to restart the heater and opened the supply line. the heater gas valve is still in the ON position. It won't move to any other position.

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Try pushing down on the knob then turn

Posted on Sep 05, 2010

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I am getting an error code ags


AGS - Auto Gas Shutoff = Because of a problem sensed, the gas valve is closing, stopping gas supply and hence heater shutoff.
Improper water flow through heater! Check filter, pump, water supply lines, anything that will reduce water flow into heater.
A faulty Pressure Switch may cause this problem as well.
or...
In coming water to heater is over 104°
If all is good with the above, replace the AGS Switch.

May 31, 2015 | Jandy Laars LX Pool Heater / 400,000 BTU /...

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I have a Hayward h300 pool heater. We just opened the pool the other day and noticed the heater wouldn't work. The display is showing "IF" which I looked up to be an ignition failure. Can anyone give me an...


Most common reason I have found is the heater is not getting fuel. Most times the gas line shut off valve is not open. Other times the gas line may have air in it and that is what is going across the pilot and air won't ignite until the gas gets there. In the meantime, the attempts will get to the point when the ignition failure code will pop up. Try multiple times and see if it will ignite after you check your shut off valves, and the dial on the heaters gas valve itself, make sure it is on "On".

If all that fails, lightly tap the gas valve with the handle of a screwdriver. Sometimes over the Off season, the aluminum parts in the gas valve get sticky & won't open and close properly until they operate once or twice. But if that is the case, I personally would rather replace the valve, because if it sticks in the closed position, it could stick in open position as well and not turn off?
Good luck

May 26, 2014 | Pool & Spa

1 Answer

After hot water demand, burner stays lit, blew up Pex supply line


Thermocouple has 2 ends. One end attaches to gas control valve, other end sits inside the pilot flame.
Flame heats thermocouple, causing tiny electrical current that is detected inside the gas control valve and keeps the gas valve open so water heater can turn on when thermostat calls for heating.
If pilot goes out, then no electric current reaches gas control, and all gas to burner and pilot is shut off.

If pex line burst, that implies very high pressure, caused by closed system with check valve that stops expansion, or possible clog in the water line, or high local water pressure, or clogged factory-installed heat traps.
Put pressure gauge like BTG100 on the drain valve to check pressure, should not exceed 80psi, install pressure reducing valve on cold water line, install expansion tank on cold water line. Remove heat traps and install ordinary pex-lined di-electric nipples from hardware store.

If the water was super hot, then overheating could have caused the pipe explosion.
However the gas control thermostat is ECO protected, and if ECO (energy cut off) trips because of high heat detected inside the tank or combustion chamber, the gas control will trip off and no longer work, gas control needs to be replaced. Some newer electronic gas controls can be reset, but that type heater uses a thermopile instead of thermocouple.
Thermopile is basically a group of thermocouples, that product more electric current that is used to power electronics inside the gas control valve, which issues an error code on the gas control, and some day will send a text message each time out-of-range event occurs.

Copy following links for troubleshoot resources, including troubleshoot by type of gas control valve:
http://weaterheatertimer.org/How-to-troubleshoot-gas-water-heater.html
http://waterheatertimer.org/Low-hot-water-pressure.html
http://waterheatertimer.org/pdf/How-to-replace-water-heater-gas-valve.pdf

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Water leakage at lower heater unit of 50 gal.Rheems. Four years old. How to remove and repair?


I believe your water heater could have a 6 yr warranty. If its leaking then you should be able to get it replaced for free. Call the place you pruchased it at and see what their procedure is for returning it. Most places just allow you to bring it back and they will give you a new one. To uninstall, first shut OFF the breakers to the power or shut off the gas. Then shut OFF the valve to the water supply line and if there is a shutoff valve on the other water line line coming out of the heater, shut it off also. Once the water valves are shut off, remove the two water lines from the top of the unit. On the bottom of the unit you will notice a water faucet valve. Attach a garden hose to the valve and run the hose outside on the ground. Open the water valve and your heater will drain through the hose to outside on the ground. Then, with the power OFF, unattach the wires from the junction box or wherever they are attached or if it is a plug, then unplug it. If it is a gas model, unattached the gas line AFTER the gas is truned OFF. Once the water has fully drained from the tank then it should be ready to be moved. Reinstall the new tank in the same manner in reverse.

Mar 29, 2011 | Rheem Water Heaters

1 Answer

My water heater won't circulate water. i think it is clogged with calcium


One thing you might try is to shut off power or turn gas valve to pilot,as you didn't say if it was gas or electric. Hook up garden hose to drain valve and run hose to floor drain or sump basin. Shut off water supply valve to heater. Open drain valve and if you get a decent flow then let it drain tank about half way. If flow rate drops drastically then open hot side on faucet nearby to break vacumn.When you think tank is about halfway drained then shut off faucet if you opened one and close drain valve. Turn water supply valve back on and let tank refill. When it is full leave supply valve on and open drain valve and let water flush thru system for several mins. Close drain valve and run water on both hot and cold side of faucets fartherest away from heater as possible. Close this faucet
Turn tharmostat up as high as it will go and let heater run till it shuts off then return thermostat to original setting. Go through the drain and flush procedure a couple more times and this shold help break mineral deposits loose and flush them out. This should make for more efficeint operation and help prolong the tank life. Hope this helps you. Have a good new year and thank you.

Jan 02, 2011 | Whirlpool Heating & Cooling

1 Answer

Heater will not light. When the T-Stat calls for heat the vent fan starts and runs for 40sec, then the igniter starts (I can see it sparking in the manifold), next the gas valve clicks. All this seems...


Are you sure that your gas supply is strong enough, and that being said is there an in line regulator on your installation? You need gas pressure along with volume to burn properly. The itself sounds fine it is going thru all of its system checks then shutting down. You need someone with a set of gauges and check gas line pressure then check past the regulator and again check the pressures. It could be as simple as opening the regulator up slightly or as costly as replacing the line with a bigger one to support the heater. Make sure that you have purged the line good, and I would do this at the dirt leg in the supply or as close to the heater as possible.

Dec 27, 2010 | Mr. Heater MHU45NG

1 Answer

I have a Reliance 501 Gas that is leaking water from the bottom. How do I shut the water off and how do I turn off the gas


There should be a valve on the cold water supply entering the top of your heater. This may be a gate or globe valve with a circular handle on it. If you have this type of valve then turn handle clockwise,to the right to close it. You can check output on hot side of faucet to see if valve is working. There may be a ball valve with a straight handle on it. To shut this off push or oull handle till it is at right angle to valve. As a last resort you may have to shut off water supply to house.
On the gas start out bt shuting gas off at control knob on top of gas valve. It should be marked on off and pilot. Turn to off. Now check on incoming gas line for valve to shut gas off before it gets to gas valve. This valve should have a raised flat section that you can close with a adjustable wrench.Turn till it is at right angle to pipe and you should be done. Turn to right to shut it off. Hope this helps you. Thanks

Dec 23, 2010 | Reliance Natural Gas Water Heater Control

1 Answer

Over flow leaks constantly after 8 years, never done this before. What should we do?


As long as the heater is still working good and not leaking I would just replace the Temperature and pressure relief valve. To do this turn control knob on gas valve from on to pilot. This will maintain pilot so you won't have to relight later while keeping the burner from firing while you are replaceing t&p valve. Turn off water supply on cold water supply to water heater.If this valve won't work or you don't have one shut off supply to house. Do not attempt to remove t&p valve until you are sure water is off. Open hot water on faucet close to heater and drain a few gallons from water heater drain valve. Purchase new t&p valve at hardware store. They are pretty standard 3/4 inch male pipe thread, 150 p.s.i. rated. Use teflon tape to seal pipe threads ,4-5 wraps at least or pipe joint compound to seal threads You will need a pipe wrench to remove old valve. Turn it counterclockwise to lossen then remove. Have new valve ready to go to minimize water loss. Be carefule as water will still be hot. Install new valve and tighten securly. Turn water back on and check for leaks. Also shut off faucet you opened. Once you are satisfied there are no leaks turn gas valve to on and bleed air from several places. I hope this helps you. Thanks.

Nov 26, 2010 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

I have the Mr. Heater Big Buddy and it has been giving me trouble lately. After two years of flawless operation, the unit constantly shuts down, after only a few minutes of operation. I use a 20lb cylinder...


tough one doug, easy way is buy a new gas valve under red knob.
harder to try to fix old one.
the stopage of your mister heater is caused by the pilot lite going out
so what is causing the pilot lite to go out? that is the problem.

inspect the pilot lite and its gas supply tube all the way up to the main gas valve under the red knob control valve. unscrew the pilot lite gas supply line from the main gas control valve and clean out interior of gas supply line all the way through the pilot lite orfice to the open air. It must be totally clean, .like new, including the pilot
orface, in order to work properly.the least obstruction might deflect
or restrict the gas flow & cause poor or no opperation
.
when you unscrew the pilot lite gas supply line from the main gas valve,with a flashlight, look inside the hole, that the gas supply line was removed from.
It may be full of gunk that has to be removed for gas to flow properly. try blowing out with compressed air with a straw tipped blow gun. you may need carburator cleaner to loosen the gunk ,if gunk is present.
WARNING:::
If you use carb. cleaner, it burns like gasoline, so make sure any carb cleaner is blowed of with compressed air or blotted up with facial tissue & totally dried up & removed before firing up mr heater, in order not to catch mr. heater on fire.

If a lot of gunk is in the outlet of the main gas supply valve,you will
need a pocket screwdriver,a paper clip and maybe a sewing needle in order to pick out the crud.
It must be totally clean inside, like new, in order to have a chance at working.
It may still not work if more crud is inside the main gas control valve where you can not get to clean it out.

if you reach the point where you decide to buy a new main gas control valve, first try disassembling your old main gas control valve and cleaning it out,like rebuilding a carb, and reassembling it.
If this works,you dont need to buy a new main gas control valve
and have saved 30.00 plus 12.95 shipping
if it dont work,all it cost you was time & angervation.and you still need to buy a new main gas control valve.

Jan 04, 2010 | Mr. Heater Big Buddy Heater

1 Answer

Hot water coming out of overflow pipe on my vulcan everhot water


Assuming you are talking about the temperatur/pressure relief valve, it is stuck open.

1. Turn off gas or electric to water heater
2. Close water supply to water heater
3. open hot water faucet on nearest fixture to depressurize hot water system.
4. close tpr valve (you may have to push in on the center spine. It may be resistant to closing from sediment. If so, opening and closing several times may solve that issue.

Once you get the tpr valve closed, close the faucet and open the supply valve. If the tpr stays closed, go ahead and turn on the gas/electric and re-light pilot and turn on control etc.

If the TPR blows again, you will need to replace it. YOu can buy a new one at any plumbing supply store. Shut down the heater again, drain a bit of water out using the valve on the bottom of the tank. there is probably copper pipe connected to the TPR valve which you may have to cut or maybe can just unscrew. The TPR threads out of the tank, install the new valve (make sure to use pipe dope or teflon tape.

Jan 04, 2009 | Water Heaters

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