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CONTENTS
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Section 1: CONTROL FUNCTIONS .......................................... 1-1
1. Introduction ............................................................. 1-2
2. Selecting Outdoor Unit for Operation ......................................... 1-3
3. Compressor Control ...................................................... 1-4
4. Special Controls ......................................................... 1-9
5. Other Controls .......................................................... 1-14
6. Operation of Solenoid Valves .............................................. 1-15
7. Outdoor Unit Electronic Thermostatic Expansion Valves [MOV1, MOV2 & MOV4] ..... 1-17
8. Outdoor Fan Control ..................................................... 1-19
9. Demand Control ........................................................ 1-20
10. Indoor Unit Control of the Electronic Control Valve .............................. 1-21
11. Rap Valve Kit Control .................................................... 1-23
12. Indoor Unit Refrigerant Oil Self Recovery Control .............................. 1-24
13. Discharge Temperature ................................................... 1-25
14. Current Protection ....................................................... 1-26
15. Pressure Sensor Failure .................................................. 1-27
16. Backup Operation ....................................................... 1-28
17. Service Maintenance Functions ............................................ 1-30
18. Other Functions ........................................................ 1-32
Section 2: OUTDOOR UNIT REPAIR PROCEDURES ........................... 2-1
1. Removing Panels ........................................................ 2-2
2. Removing Electrical Component Box and Duct ................................. 2-3
3. Discharging Compressor Oil ................................................ 2-5
4. Backup Operation ........................................................ 2-6
5. Recovering Refrigerant .................................................... 2-9
6. Checking for Leakage After Repair .......................................... 2-14
7. Evacuating System ...................................................... 2-15
8. Charging Compressor Oil ................................................. 2-16
9. Pumping Out Refrigerant from Outdoor Unit ................................... 2-20
10. Compressor ........................................................... 2-23
11. High and Low Pressure Sensors ........................................... 2-35
12. Replacing 4-way Valve ................................................... 2-36
Section 3: OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER ............ 3-1
1. Overview ............................................................... 3-2
2. Functions ............................................................... 3-3
3. Ordinary Display Controls and Functions ...................................... 3-4
4. Monitoring Operations ..................................................... 3-9
5. Outdoor Unit Alarm History Monitor ......................................... 3-11
6. Mode Settings .......................................................... 3-12
Section 4: REMOTE CONTROLLER FUNCTIONS ............................. 4-1
1. Simple Settings Function ................................................... 4-2
2. Detailed Settings Function .................................................. 4-4
3. Remote Controller Servicing Functions ....................................... 4-15
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