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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Carrier apu unit won't start. I've changed fuel filter, air

Customer Question

carrier apu unit won't start. I've changed fuel filter, air filter, and made sure full of oil. Filled fuel filter when changed it and bleed fuel . Had no air in fuel line. Turnes over but won't start. Single fire a couple of times but just spins over now.
Submitted: 1 year ago.
Category: HVAC
Expert:  Rick Amos replied 1 year ago.
Hi, Ill try to help youWhat color is the fuel that comes when you bleed it.
Customer: replied 1 year ago.
clear fuel
Expert:  Rick Amos replied 1 year ago.
Did your unit work until you did the filter change. If so then you still have air in the lines somewhere, possibly after the bleed point , in the injector. Did you try to run it before your bled the air positively. if so you could have pushed air into the pump or injector which will be harder to fix.
Customer: replied 1 year ago.
Unit hadn't been rin for 5 months. Changed filters and bled after not being able to get started