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Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Janitrol gpd075-3 handler fan run on heat not on cool does

Customer Question

janitrol gpd075-3 handler fan run on heat not on cool does this have sequencer if so wheres is it at
Submitted: 2 years ago.
Category: HVAC
Expert:  BillyHvac replied 2 years ago.
Hello,

dont you have a circuit board in the blower section?

Billy
Customer: replied 2 years ago.

replaced circuit board same problem!!

Expert:  BillyHvac replied 2 years ago.
Thank you...

have you switched the blower leads?...obviously the "heat" terminal is live and that speed on the motor works....have you moved the black wire to the heat terminal and tried?
Customer: replied 2 years ago.

switched lead on motor still same problem

Expert:  BillyHvac replied 2 years ago.
so when you swapped leads...it ran on heat...but not cool?

and what terminals are you on?
Customer: replied 2 years ago.

is it possible that the handling fan is bad

Expert:  BillyHvac replied 2 years ago.
yes...that is why I asked to switch leads....you could have one speed ok and another bad. is there a capacitor?