Daikin Altherma HT - Your heating system in detail and getting the most from it; Outdoor unit; Hydrobox; Cylinder

ESIE09-08B
ii Table of Contents
Part 5 - Function ........................................................................... 45
1. Operation Mode ....................................................................................46
2. Basic Control.........................................................................................47
2.1 Normal Operation ...................................................................................47
2.2 Compressor PI Control...........................................................................48
2.3 Electronic Expansion Valve PI Control R-410A circuit ...........................49
2.4 Electronic Expansion Valve PI Control R-134a circuit............................49
3. Special Control......................................................................................50
3.1 Startup Control .......................................................................................50
3.2 Defrosting Operation ..............................................................................51
3.3 Pump-down Residual Operation ............................................................52
3.4 Stopping Operation ................................................................................53
4. Protection Control .................................................................................54
4.1 High Pressure Protection Control...........................................................54
4.2 Low Pressure Protection Control............................................................56
4.3 Discharge Pipe Protection Control .........................................................58
4.4 Inverter Protection Control .....................................................................59
5. Other Control.........................................................................................61
5.1 Heating Operation Prohibition ................................................................61
5.2 Inverter Fan Control (Switch Box Fan) ...................................................61
5.3 Crankcase Heater ..................................................................................61
6. Outline of Control (Indoor Unit) .............................................................62
6.1 Freeze Prevention ..................................................................................62
6.2 Simultaneous demand of space heating and domestic water heating..... 63
Part 6 - Test Operation................................................................. 69
1. Test Operation ......................................................................................70
1.1 Procedure and Outline ...........................................................................70
1.2 Air Tight Test and Vacuum Drying .........................................................72
1.3 Additional Refrigerant Charge ................................................................73
1.4 Operation when Power is Turned On .....................................................77
2. Outdoor Unit PC Board Layout .............................................................78
3. Field Setting ..........................................................................................79
3.1 Field Setting from remote control ...........................................................79
3.2 Field Setting from Outdoor Unit............................................................106
Part 7 - Troubleshooting............................................................. 117
1. Symptom-based Troubleshooting .......................................................119
2. Troubleshooting by Remote Control ...................................................121
2.1 The INSPECTION / TEST Button.........................................................121
2.2 Self-diagnosis by Wired Remote Control .............................................122
2.3 Operation of the Remote Controller’s Inspection / Te
st Operation 
Button ...................................................................................................123
2.4 Remote Control Service Mode .......
......................................................124
2.5 Remote Controller Self-Diagnosis Function .........
................................126
3. Troubleshooting by Indication on the Remote Controller ....................132
3.1 “A1” Indoor Unit: PC Board Defect ........................................................132
3.2 “A6” Indoor Unit: Pump Error (M1P) or Other Water System Error ......133