Daikin ALTHERMA HT ERSQ 014 V1 - Page 4

ESIE09-08A
ii Table of Contents
2.1 Normal Operation...............................................................................................55
2.2 Compressor PI Control .......................................................................................56
2.3 Electronic Expansion Valve PI Control R-410A circuit.....................................57
2.4 Electronic Expansion Valve PI Control R-134a circuit......................................57
3. Special Control..................................................................................................58
3.1 Startup Control....................................................................................................58
3.2 Defrosting Operation ..........................................................................................59
3.3 Pump-down Residual Operation.........................................................................60
3.4 Stopping Operation.............................................................................................61
4. Protection Control.............................................................................................62
4.1 High Pressure Protection Control.......................................................................62
4.2 Low Pressure Protection Control........................................................................64
4.3 Discharge Pipe Protection Control .....................................................................66
4.4 Inverter Protection Control.................................................................................67
5. Other Control ....................................................................................................69
5.1 Heating Operation Prohibition............................................................................69
5.2 Inverter Fan Control (Switch Box Fan)..............................................................69
5.3 Crankcase Heater................................................................................................69
6. Outline of Control (Indoor Unit).......................................................................70
6.1 Freeze Prevention ...............................................................................................70
6.2 Simultaneous demand of space heating and domestic water heating.................71
Part 6 - Test Operation.................................................................77
1. Test Operation...................................................................................................78
1.1 Procedure and Outline ........................................................................................78
1.2 Air Tight Test and Vacuum Drying....................................................................80
1.3 Additional Refrigerant Charge ...........................................................................81
1.4 Operation when Power is Turned On .................................................................85
2. Outdoor Unit PC Board Layout ........................................................................86
3. Field Setting......................................................................................................87
3.1 Field Setting from remote control.......................................................................87
3.2 Field Setting from Outdoor Unit.......................................................................115
Part 7 - Troubleshooting.............................................................127
1. Symptom-based Troubleshooting ...................................................................129
2. Troubleshooting by Remote Control...............................................................131
2.1 The INSPECTION / TEST Button ...................................................................131
2.2 Self-diagnosis by Wired Remote Control.........................................................132
2.3 Operation of the Remote Controller’s Inspection / Test Operation Button......133
2.4 Remote Control Service Mode .........................................................................134
2.5 Remote Controller Self-Diagnosis Function ....................................................136
3. Troubleshooting by Indication on the Remote Controller ..............................142
3.1 “A1” Indoor Unit: PC Board Defect..................................................................142
3.2 “A6” Indoor Unit: Pump Error (M1P) or Other Water System Error...............143
3.3 “A9” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve
(K1E) R-410A circuit144
3.4 “AE” Indoor Unit: Water Circuit Error .............................................................146
3.5 “AJ” Indoor Unit: Malfunction of Capacity Determination Device.................147
3.6 “C1” Indoor Unit: Failure of Transmission (Between Indoor unit PC Board and
Control PC Board)148