Service & Parts Manual (2019, 2020, 2021, 2022)

64 PB
AIR CONDITIONERS: TROUBLE SHOOTING TIPS
REFRIGERANT SYSTEM DIAGNOSIS – COOLING CYCLE
LOW SUCTION PRESSURE HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE
Low Load Condi�ons
High Load Conditions
Low Load Condi�ons
High Load Conditions
Low Air Flow Across
Indoor Coil
Reversing Valve not
Fully Seated
Refrigerant System
Restriction
Low Airflow Across
Outdoor Coil
Overcharged
Reversing Valve not
Fully Seated
Overcharged
Undercharged
Noncondensables (air)
in System
Undercharged System
Defective Compressor
Moisture in System
Refrigerant System
Restriction
High Air Flow Across
Indoor Coil
Defective Compressor
Figure 712 (Trouble Shooting Tips)