Heating Mechanical Checks Flowchart - Fujitsu FO14R Series Installation Instructions Manual

Heating Mechanical Checks Flowchart

High Liquid
Pressure
Dirty Indoor
Coil
Inoperative Indoor
Fan
Overcharge
Noncondensibles
Wrong Indoor
Fan Rotation
Dirty Filters
Inadequate Ducts
Outdoor Unit
Running?
YES
Pressure
Problems?
Low Liquid
Pressure
Low on
Charge
Open IRP
Valve
Low Indoor
Temperature
Bad
Compressor
Indoor Check
Valve Closed
Restricted Outdoor
Metering Device
Restricted
Filter Drier
Reversing Valve
Failure
DIAGNOSTICS
NO
Go to Electrical
Checks Flowchart
Low Suction
Pressure
Dirty Outdoor Coil
Inadequate Outdoor
Airflow
Inoperative Outdoor
Fan Motor
Low on Charge
Restricted Outdoor
Metering Device
Restriction in
System
Recirculation of
Outdoor Air
Wrong Outdoor
Blower Rotation
Outdoor Check
Valve Closed
Restricted
Filter Drier
35