Coleman DGAA077BDTA green light flashes 3 times
Posted: Thu Dec 06, 2012 10:03 am
I live in Oklahoma in a single wide mobile home.
I have a Coleman gas furnace model:DGGAA077BDTA
Green light blinks three times.
Called first service tech three weeks ago.
He came and took a tube off the pressure switch blew and sucked on a tube put it back together. I asked him what can be done to fix this problem. He said turn the furnace off at the thermostat and then take the hose loose from the pressure switch and gently blow and suck. Turn furnace back on. Charged me $130 and left. It worked until about 4 am.
Called a different service tech out on Dec 5
1. He cleaned the burned assembly.
2. inspected the heat exchange
3. replaced the assembly booster with motor
4. climbed on top of roof and inspected the flue
5. checked the pressure switch
put everything back together and the green light still blinked three times.
He was inspecting the main board and found a few of the wires loose. Pushed those back into there little holding clip. Turned the heater back on and no flashing green light.
Got up around 8am and flashing green light 3 times again. I turned the heater off gave it a couple of minutes and turned it back on. It just finished a cycle still has solid green light.
The main time I get the error code is when the heater comes on a lot (early in the morning 3 am to 6 am).
So the service tech can’t figure out what is wrong with the furnace.
Any advice would be greatly appreciated.
I have a Coleman gas furnace model:DGGAA077BDTA
Green light blinks three times.
Called first service tech three weeks ago.
He came and took a tube off the pressure switch blew and sucked on a tube put it back together. I asked him what can be done to fix this problem. He said turn the furnace off at the thermostat and then take the hose loose from the pressure switch and gently blow and suck. Turn furnace back on. Charged me $130 and left. It worked until about 4 am.
Called a different service tech out on Dec 5
1. He cleaned the burned assembly.
2. inspected the heat exchange
3. replaced the assembly booster with motor
4. climbed on top of roof and inspected the flue
5. checked the pressure switch
put everything back together and the green light still blinked three times.
He was inspecting the main board and found a few of the wires loose. Pushed those back into there little holding clip. Turned the heater back on and no flashing green light.
Got up around 8am and flashing green light 3 times again. I turned the heater off gave it a couple of minutes and turned it back on. It just finished a cycle still has solid green light.
The main time I get the error code is when the heater comes on a lot (early in the morning 3 am to 6 am).
So the service tech can’t figure out what is wrong with the furnace.
Any advice would be greatly appreciated.