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4. Protection Control .................................................................................47
5. Other Control.........................................................................................52
6. Outline of Control (Indoor Unit) .............................................................53
Part 5 Test Operation ................................................................. 63
1. Test Operation ......................................................................................64
2. Outdoor Unit PC Board Layout .............................................................81
3. Field Setting ..........................................................................................82
Part 6 Troubleshooting ............................................................. 119
1. Symptom-based Troubleshooting .......................................................121
2. Troubleshooting by Remote Controller ...............................................124
3. Troubleshooting by Indication on the Remote Controller ....................138
ii
3.6 Stopping Operation ................................................................................45
4.1 High Pressure Protection Control...........................................................47
4.2 Low Pressure Protection Control............................................................48
4.3 Discharge Pipe Protection Control .........................................................49
4.4 Inverter Protection Control .....................................................................50
4.5 Injection Control (only for CMSQ200A7) ................................................51
5.1 Demand Operation .................................................................................52
5.2 Heating Operation Prohibition ................................................................52
6.1 Drain Pump Control................................................................................53
6.2 Louver Control for Preventing Ceiling Dirt..............................................55
6.3 Thermostat Sensor in Remote Controller...............................................56
6.4 Thermostat Control while in Normal Operation ......................................58
6.5 Thermostat Control in Dry Operation .....................................................58
6.6 Electronic Expansion Valve Control .......................................................59
6.7 Hot Start Control (In Heating Operation Only)........................................59
6.8 Freeze Prevention ..................................................................................60
6.9 Heater Control ........................................................................................60
6.10 List of Swing Flap Operations ................................................................61
1.1 Installation Process ................................................................................64
1.2 Procedure and Outline ...........................................................................65
1.3 Operation when Power is Turned On .....................................................80
3.1 Field Setting from Remote Controller .....................................................82
3.2 Field Setting from Outdoor Unit..............................................................96
2.1 The INSPECTION / TEST Button.........................................................124
2.2 Self-diagnosis by Wired Remote Controller .........................................125
2.3 Self-diagnosis by Wireless Remote Controller .....................................126
2.4 Remote Controller Service Mode .........................................................129
2.5 Remote Controller Self-Diagnosis Function .........................................131
3.1 "A0" Indoor Unit: Error of External Protection Device............................138
3.2 "A1" Indoor Unit: PC Board Defect ........................................................139
3.3 "A3" Indoor Unit: Malfunction of Drain Level Control System (S1L) ......140
3.4 "A6" Indoor Unit: Fan Motor (M1F) Lock, Overload...............................142
3.5 "A9" Indoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E)........................................................143
3.6 "AF" Indoor Unit: Drain Level above Limit .............................................145
3.7 "AJ" Indoor Unit: Malfunction of Capacity Determination Device ..........146
SiBE28-805
Table of Contents

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Chapters

Troubleshooting

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Fmdq50-125a7v3b, Cmsq250a7w1b, Fmcq50-125a7veb

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