AC and Heat won't turn on. 4 Light blinking on furnace.
Posted: Sun Apr 27, 2008 2:49 pm
Hi guys,
First time posting since I got a problem on my AC or Heating unit. My AC/Heating was working fine until I came back from short vacation. My furnace is a Coleman model #DGAA090BDTA and a Trane AC unit.
I set my thermostat for heat or cold and my unit would not turn on. Check fused and all is fine. Check my furnace and light indicator is 4 blinking pointing to limit switch being open. My unit is a downward blower. I'd only saw one limit switch not sure if it's upper or lower. Writing on it is 025-35381 L145-30F.
My question is this the only problem? If I replaced this part will it fix my issue or do I need further testing? If so what do I need to do? Any help is greatly appreciated.
Thank you....Luey
First time posting since I got a problem on my AC or Heating unit. My AC/Heating was working fine until I came back from short vacation. My furnace is a Coleman model #DGAA090BDTA and a Trane AC unit.
I set my thermostat for heat or cold and my unit would not turn on. Check fused and all is fine. Check my furnace and light indicator is 4 blinking pointing to limit switch being open. My unit is a downward blower. I'd only saw one limit switch not sure if it's upper or lower. Writing on it is 025-35381 L145-30F.
My question is this the only problem? If I replaced this part will it fix my issue or do I need further testing? If so what do I need to do? Any help is greatly appreciated.
Thank you....Luey