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SiBE121021_C
Table of Contents
iv
2. Function of Indoor Unit (SA Models) ...................................................104
Drain Pump Control..............................................................................104
Thermostat Sensor in Remote Controller.............................................106
Freeze Prevention Control ...................................................................108
Hot Start Control (In Heating Operation Only)......................................109
3. Function of Thermistor ........................................................................110
4. Control Specification ...........................................................................112
Frequency Control................................................................................113
Controls at Mode Changing / Start-up..................................................116
Discharge Pipe Temperature Control...................................................117
Input Current Control............................................................................118
Freeze-up Protection Control ...............................................................118
Heating Peak-cut Control .....................................................................119
Outdoor Fan Control.............................................................................119
Liquid Compression Protection Function..............................................120
4.10 Defrost Control .....................................................................................120
4.11 Low Hz High Pressure Limit .................................................................121
4.12 Electronic Expansion Valve Control .....................................................121
4.13 Malfunctions .........................................................................................126
Part 5 Operation Manual ...........................................................128
1. System Configuration..........................................................................129
2. RA Indoor Unit.....................................................................................130
FTXG, CTXG Series - ARC466A1 .......................................................130
FTXS, FVXS Series - ARC452A1, A3 ..................................................154
ATXS, FLK(X)S, FDK(X)S Series - ARC433B67, B68, B69, B76 ........190
3. SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series.......................212
BRC7E530W/531W, BRC7F532F/533F, BRC7EA63W/66..................272
Part 6 Service Diagnosis...........................................................284
1. Troubleshooting with LED ...................................................................286
2. Problem Symptoms and Measures .....................................................289
3. Service Check Function ......................................................................290
SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series........................299
4. Code Indication on Remote Controller ................................................306
SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series........................306
5. Troubleshooting for RA Indoor Unit - F(C)TXG,
FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series.................................308
Indoor Unit PCB Abnormality ...............................................................308
Freeze-up Protection Control or Heating Peak-cut Control ..................309