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airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8252
Experience:  Furnace, A/C and heat pump specialist.
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I have a Lennox SL28 furnace blowing cold air. I didn't

Customer Question

I have a Lennox SL28 furnace blowing cold air.
I didn't realize that the setup has 2 filters, and one was filthy. I've changed both filters. Turned of the power supply for about 10mins, checked the breaker box, and still cold air.
The Surelight Control panel is flashing a code of 5+1 = Rollout Circuit Open.
2yrs ago, we called a service tech & he showed me what to do, but can't for the life of me remember what the instructions were.
Please help.
Submitted: 9 months ago.
Category: HVAC
Expert:  airheatman replied 9 months ago.

These manually reset switches are located on (or inside of)

the burner box. If tripped, check for adequate combustion

air before resetting.