Question about Coleman Heating & Cooling
My dgat056bdd unit is acting funny it worked fine last season but first fire up this one and the furnace wont stay lit,,it is an electric ignition gas furnace when it does this it gives an error code of one blink,,
The flame detector is dirty. Look for a wire that pokes out into the area where the flame would be. Clean it off.
Posted on Nov 25, 2013
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Posted on Jan 02, 2017
There is a vacuum sensor on most units tied from the exhaust gas fan to the sensor. Does the unit try to start? If the unit's exhaust fails to pull the switch it will turn off after about 30-45 sec after starting. "IT" thinks it's not exhausting and stops to keep from overheating. Do you have this exhaust fan and rubber hose to sensor? Can you see if that fan is turning on start?
Posted on Nov 10, 2007
SOURCE: furnace is not staying lit
if the main burners are firing but goright out it could be the flame sensor which is a straight wire with one wire going to it you can clean it with steel wire or fine sand paper if not check the flashing code on the control board
Posted on Dec 25, 2008
You may have a few sensors, one may be a thermopile that energizes the pilot. It is a very thin but long bulb located in the pilot flame. Then you may have something called a thermopile which is also located in the pilot flame that energizes the main gas valve. It is a larger diameter bulb and will have metal wrapped wireg going to the gas valve. If the pilot stays on but the flame goes out under the logs, change your thermopile and look for a bad connection at the gas valve or switch. If both the main burner and the pilot goes out you may have a gas valve problem or a plugged vent pipe. If the flame just disappears it is most likely a gas valve. If the flame changes colors and lifts from the burner, that is a sign of a plugged vent. Good luck.
Posted on Nov 05, 2009
if you have replaced the flame sensor and it will not stay lit, the draft safety switch may be opening. It works on positive and negative pressure created by the inducer fan motor.You may have a restriction in your heat exchanger or if is a high efficiency furnace, it may not have the drain tube installed properly with a trap. The trap works just like the trap under your sink and if water isnt in the trap, the pressures can be effected enough to open the draft switch(some call it an air pressure switch)
Posted on Jan 07, 2010
Turn off the power to furnace.
on the last burner to light there is a small metal rod in front of the burner. This is a safety called the flame sensor. It is dirty. Unscrew it from the bar ( 1 Screw) unplug the connector wire from it and clean it with steel wool. it will be kind of burnt. Plut back in place and turn on the furnace to cycle.
Posted on Apr 04, 2010
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