Service & Parts Manual (2019, 2020, 2021, 2022)
Table Of Contents
- INTRODUCTION
- SPECIFICATIONS
- OPERATION
- ROUTINE MAINTENANCE
- REMOVE AND INSTALL THE CHASSIS
- R-410A SEALED SYSTEM REPAIR
- COMPONENT TESTING
- Hermetic Components Check
- Reversing Valve Description And Operation
- Testing The Reversing Valve Solenoid Coil
- Checking The Reversing Valve
- Replace The Reversing Valve
- Touch Test Chart : To Service Reversing Valves
- Compressor Checks
- Compressor Replacement
- Fan Motor
- Capacitors
- Heating Element
- Drain Pan Valve
- Testing the User Interface and Electronic Control Board
- Thermistors Description
- Electronic Control Board Identification
- Replace the Electronic Control Board
- Replace the User Interface
- TROUBLESHOOTING
- WIRING DIAGRAMS
- PARTS CATALOG
- Available Accessories
73 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 718 (Trouble Shooting Tips)