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I have a propane gas wall heater and when you use the electric igniter the pilot works fine but when you turn it to low it goes out. if you light it with a match it will light on low but will not go on high, flame stays the same after 20-30 sec there is a pop and the heater shuts off
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Propane and natural gas heaters have standing pilot ignition or electronic ignition. If you have a standing pilot ignition you should see if the pilot light stays on when lit and after the valve is turned to the full ON position after lighting. Electronic ignition should light the pilot for you and then the burner comes on - but at the end of the cycle the pilot and the burner go off. If you do not have ignition, check the gas pressure -- 5-7 inches of water column for natural gas and 11-15 inches of water column for propane. Use the pressure noted on the regulator or other labeling. If you cannot test the pressure then contact your gas company or propane supplier for service.
For (fire) safety, there is usually a thermostat that will turn off the gas if pilot light goes out.
So when you try to light the pilot you will have keep press & hold the pilot gas supply for at least 10 sec until the thermostat is heated up. Then only when the pilot light stays on continually, can you turn on the burner.
Forget about changing to a High pressure regulator!
If you're using a 20lb propane tank (Gas Grill Tank), that may be the problem. Turn off the propane tank at the tank valve and disconnect it from the tank. Wait 5 minutes and reattach the heater hose to the tank. Turn the propane tank valve on very,very slowly until it's all the way open. Try lighting your heater now. If the pilot flame height returned to normal, that was the problem.
FYI - The Thermocouple has nothing to do with the length of the pilot flame. It's a safety feature that stops the gas if the pilot flame goes out for any reason.
Hope that solves your problem. Please let me know.
The thermocouple is the pilot's, well, co-pilot! It is the electronic device that senses if the pilot flame is hot enough to sustain burning the gas fuel from the burner. If the thermocouple thinks it's safe, then it keeps open the main gas valve located in the pilot assembly. If the thermocouple does not sense enough heat from the pilot flame (such as when the pilot is out), then the thermocouple shuts off the gas valve to the burners. How the Thermocouple Works So what is this thing and how does it work? Well the thermocouple (technically called a thermocouple junction) is a device that contains two metal wires welded at the ends and placed inside a protective metal case. The thermocouple sensor is found at the business end of the pilot flame and is designed to be placed in the hottest part of the flame. The other end is connected to the pilot valve body. As the thermocouple heats up, it produces a small amount of electricity and when it gets hot enough from the pilot, send a signal to open the gas valve by using a solenoid operated by a 24 volt transformer. The thermocouple calls the shots, and by converting heat to an electrical signal, it allows the gas valve to open or close.
Once the gas valve is open, gas is then constantly supplied to the pilot and as required for the gas burners (as called for by the thermostat). If the pilot goes out, then the thermocouple gets cold and produces no electric signal to open the gas valve's solenoid and the gas valve shuts off the gas supply to the pilot and burners
You need to bled the line longer and when you get lited hold down for a good minute.When the gas gave out ,there could trash in the line.I would take the line off and blow gas through it undtil you can smell it.
change the gas valve, if the thermocoupling works and the piliot stays lit then it has to be the gas valve check to make sure the screen is clear also,, you said it's propane, check to make sure it is all the way turned on, and has the right pressure it might have a bad regulator on it, but will let other things in the house run good luck
I have a Reddyheat IWH16NLTD with this problem. When the heater fan turns on it blows the pilot light slightly up and away from the thermocouple causing the safety valve to close after the ceramic cools down. The manual says that low gas line pressure can cause the flame to rise too far from the thermocouple causing this problem, so either it is a problem with gas pressure, or it is an assembly plant problem.
Sounds like you have a common problem with infrared heaters. They are very dust sensitive and they will light and then go out when they are dusty. If you have already tried to blow it out at home you need to take the heater to your propane dealer who will take the heater apart and blow it out correctly. They will then hook it up to their gas line and make sure that the problem is fixed. I hope that you haven't blown up into the bottom of the heater where the gas line is connected. There is a diaphragm up in there and if you blow into it you risk messing it up to where it won't work at all.
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