Diagnostics; Cooling Mechanical Checks Flowchart - Fujitsu FO14R Series Installation Instructions Manual

DIAGNOSTICS

Cooling Mechanical Checks Flowchart

High Head
Pressure
Dirty Outdoor
Coil
Inoperative Outdoor
Fan
Overcharge
Recirculation of
Outdoor Air
Noncondensibles
Higher Than Ambient Air
Entering Outdoor Coil
Wrong Outdoor
Fan Rotation
34
Outdoor Unit
Running?
YES
Pressure
Problems?
Low Liquid
Pressure
Low on
Charge
Open IPR
Valve
Low Ambient
Temperature
Bad
Compressor
Outdoor Check
Valve Closed
Restricted Indoor
Metering Device
Restricted
Filter Drier
NO
Go to Electrical
Checks Flowchart
Low Suction
Pressure
Dirty Filters
Dirty Indoor Coil
Inadequate Indoor
Airflow
Inoperative Indoor
Blower
Low on Charge
Restricted Indoor
Metering Device
Restriction in
System
Recirculation of
Indoor Air
Wrong Indoor
Blower Rotation
Inadequate Ducts
Outdoor Check
Valve Closed
Restricted
Filter Drier