CONTENTS
4. CONTROL AND FUNCTIONS
1. Compressor frequency control..................................................................04-1
1-1. Cooling operation ...........................................................................................................04-1
1-2. Heating operation ...........................................................................................................04-3
1-3. Dry operation..................................................................................................................04-4
1-4. Compressor frequency at normal start-up ......................................................................04-5
1-5. Compressor frequency limitation by outdoor temperature ..............................................04-6
2. Auto changeover operation........................................................................04-8
3. Fan control.................................................................................................04-10
3-1. Indoor fan control..........................................................................................................04-10
3-2. Outdoor fan control.......................................................................................................04-13
4. Timer operation control ............................................................................04-16
4-1. →ireless remote control................................................................................................04-16
4-2. →ired remote control ....................................................................................................04-18
5. Defrost operation control .........................................................................04-21
5-1. Defrost operation in heating operation stopped ............................................................04-22
6. Various control..........................................................................................04-23
6-1. Auto restart...................................................................................................................04-23
6-2. MIN. HEAT operation ...................................................................................................04-23
6-3. ECONOMY operation ...................................................................................................04-23
6-4. Fresh air control............................................................................................................04-23
6-5. Compressor preheating ................................................................................................04-24
6-6. External electrical heater control ..................................................................................04-24
6-7. Electronic expansion valve control ...............................................................................04-24
6-8. Drain pump control .......................................................................................................04-25
6-9. Prevention to restart for 3 minutes (3 minutes st) .........................................................04-26
6-10. 4-way valve control.....................................................................................................04-26
6-11. Unit status monitoring and the detected value indication............................................04-27
7. Various protections...................................................................................04-29
7-1. Discharge gas temperature over-rise prevention control ..............................................04-29
7-2. Anti-freezing control (cooling and dry mode) ................................................................04-29
7-3. Current release control .................................................................................................04-30
7-4. Indoor unit fan motor over temperature protection........................................................04-31
7-5. Compressor temperature protection (For 12/18 model)................................................04-31
7-6. Low outdoor temperature protection.............................................................................04-31
7-7. High temperature and high pressure release control....................................................04-32
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