The wire lead on the thermocouple is not a tube, it's two wires, copper & silver colored. There are three screw connections on the heater controller. I forgot which screws the thermocouple wires connected to. Two of the screw connections have wires from the burner connected, also copper & silver colored. Where do I connect the thermocouple?
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The thermocouple is a copper say wire follow this to the gas valve you will see a hex head nut undone this , At the pilot follow the wire back you will see a larger nut on the pilot block undo this thermocouple should come out fix back in reverse . or look on u tube
Hi, The thermocouple is bad and needs to be replaced...
the thermocouple is the copper rod that sticks up into the flame and then goes to the gas valve... this is what tells the gas valve that the flame is lit... They are sold in many hardwares or HVAC supply houses... They are also sold by length, so measure the old one before going to buy a new one...
There should be a thermocouple in front of the burners that has a copper colored wire that runs from the gas valve to the thermocouple. It is located in the pilot flame as it is a pilot proving switch that tells the gas valve the pilot is lit and its okay to open the gas valve to the main burner.
The most common problem would be the thermocouple is bad. The thermocouple sends a small current from the pillot light to the safety shut off valve. When it goes bad, the valve doesn't receive a signal, so it shuts the valve and keeps the heater from leaking gas into the room. The thermocouple is easy to change. It is the little copper wire you see that runs from the pilot light assembly to the valev housing. It just unscrews. I would take it with you to the parts store, because they come in different lenghts. Hope this helps...
There are basically three things that can go wrong with the Warm Morning . Sensor shut off. There is a sensor button on
the back of the unit with a wire going from it to the
thermocouple. This sensor turns the heater off if the flue is blocked,
however it will also shut the heater off if the wire contacts are
dirty, or if the sensor has gone bad.
You can test this by bypassing the sensor. Disconnect the two wires
from the sensor and reconnect them directly together. If the pilot stays on,
your problem is here. Try cleaning the wire contacts first. Pilot orifice. If the pilot flame is small and doesnt look healthy, the pilot orifice may need cleaning. The hole is very small and can get dirty. Disconnect the silver tube and clean with electrical parts cleaner. Never try to clean the hole with an object like a pin, you may damage it. You may have to slide out the burner unit to get at the silver tube. (Always shut off gas before disconnecting lines and after you
reassemble, spray joints with soapywater and look for small bubbles
which may indicate a gas leak. Dont use parts cleaner around an open flame.)
Thermocouple can go bad but this is not as common as the first two problems.
The thermocoupler is bad.Replace it,or if you can adjust it to where the thermocoupler is in the pilot flame.You know you have to hold the knob down for about 30 seconds or a minute,don`t you?If the flame will not touch the thermocoupler,it will not stay lit.You can cut a piece of copper tubing,or steel tubing to slidde over the old thermocoupler to make contact with the pilot flame,and it will work,if the thermocoupler is not in to bad of shape.
THe thermocouple either has 2 wires or a coppr tube going to the gas valve. They can be bought at a good hardware store or a plumbing supply. The length of the wires or copper tube will be the determining factor as to which one you need. As these thermocouples, when heated generate a small electric charge tha keeps the gas valve open. Should cost no more than $10-15 USD
First make sure this is a heater set up for a remote mounted thermostat. If so, the gas valve has 3 screws labeled TH (thermostat) and TP (thermopile) that's the flame sensor with 2 wires coming off it, I don't know where the goofy name comes from. there will be one screw that has both, usually the top one. Wire accordingly. The new valves have a solenoid on the bottom. this connects to the high temp. sensor up top. It has 2 wires on it, one connects to the thermostat wire, the other goes to the screw with TH and TP. Or you can skip it and connect the wire from the back of the valve to the Th and TP screw. Make sure the thermostat wires aren't pinched somewhere, thus eliminating the thermostats control.
I've replaced a Williams wall gas heater non-electric. The thermostat is connected right and mounted on the wall. But, there's a thick black copper wire on the side of the furnace tagged thermostat. I don't know what to do with it? Where do you connect this wire? When it touches the top screw of the three screws running vertically(where the other wires are connected). The burner lights up and stays on, even if you play with the wall thermostat. Touching the other two screws doesn't do anything. Now, the manual talks about connecting it to the venting wires? Extra wires coming from the top or maybe somewhere else in the wall? I've left it connected to the first screw, ran the heater. But, it never turns off? Any suggestions? Thanks