Need help with goodman gas furnace


  #1  
Old 12-14-05, 07:29 AM
mda78wv
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Question Need help with goodman gas furnace

I have a goodman hvac unit model pgb048150-1 rev a. This unit sat unused for aprox 3 years untill we moved into the home several months ago. It was inspected by a local service company and a new control board and roll out switch were installed. Unit worked fine untill a few nites ago. Now it will not stay lit. Furnace will ignite and stay on about a min and then shuts off and goes into lock out mode. Led light flashes 4 times which says that the limits switch is bad, tried to bypass the switch to verify, but when I do the unit will not ignite at all. Is this just a safty feature or is there something else going on? Being the x-mas season were very short on $ so another service call is out of the qustion right now, and cant afford to go buying a bunch of parts that wont fix the prob. Any help of sug. would be great.
 
  #2  
Old 12-14-05, 08:17 PM
Jay11J's Avatar
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If it's locking out on limit, then check your air filter.. make sure it's clean..

Check air flow.. Blower running good speed?

Vents closed or blocked?
 
 

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