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I have a dgat056bdd unit and everything work good ,it fires up for about 5 seconds then flame out,,,it does this twice then shuts off giving error code of one blink what is this ??

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,,

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  • Coleman Master
  • 15,557 Answers

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

WebTeligent
  • 42 Answers

SOURCE: No heat, trouble shooting light has continious flash.

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

  • 96 Answers

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

Therinnaiguy
  • 1420 Answers

SOURCE: my heat n glow fireplace comes on fine with all

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

  • 288 Answers

SOURCE: Goodman furnace burner ignites then shuts off in about 10 seconds

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

  • 39 Answers

SOURCE: I have a Rheem Criterion II Gas Furnace that has

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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Pool heater comes on and gas enters unit for about 5 seconds and then the gas shuts off. natural gas


This could be the flame sensor. If you can look into the firing chamber there should be a steel rod about 5" long that dangles into the gas fire jets. Turn off the unit. If you take the fire sensor out and gently rub it with steel wool and replace it, it may start working again. If it does, great, but order a new fire sensor and replace the old one when it comes in. They are very cheap.

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error code should be inside heater make shure you have adequate gas pressure also sounds like bad flame sensor when flame sensor doesnt sense flame it will shut off after 7 seconds

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If this is a gas furnace it sounds like you have a polarity issue (line and neutral swapped) or you do not have a good ground to the unit. The newer units 1998 on up are polarity sensitive and require a good ground for its controls and safeties for continuous operation. Checking these things should resolve your problem. After it tries to fire twice without the flame sensor sending back a flame sensed flame signal it will lock itself out until the call for Heat is not present which will reset the control board.

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Rheem RTG-64DVN model, brand new unit installed during the weekend. fired up but shout down automatically within about 5 seconds. showed error code 12.


contact your gas company if the error code is "12," indicating that the gas supply was interrupted.

have a good day !! In LP models, the 12 error code may also appear if the LP gas supply has gotten low. To clear the code, replace or refill the LP gas supply.

go here for a list of codes for rheem tankless water heaters-- www.ehow.com/list_7833182_error-rheem-gas-water-heater.html

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