Hello John;
Following your instructions, I inspected the coil above the blower & it's clear & clean. Than I measured with a precision numeric thermometer the exiting air at the level of the A/C coil
The read out was 135F after 40 min
The return air was 75F
The limit control was set at 220F
The name plate on the Lennox furnace read:
Max.Outlet Air 185F
Temp.Rise 55F-85F
If the limit control is set at 200F it will trip after 10 min of running.
Do you believe I should change the limit control?
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