Daikin Altherma HT - Daikin Altherma Remote Controller Functions; System Power and Temperature Settings; Scheduling and Time Management; Operation Modes and Indicators

ESIE09-08B
iv Table of Contents
3.44 “L8” Indoor Unit: Inverter Current Abnormal .........................................185
3.45 “L9” Outdoor Unit: Inverter Start
up Error .............................................186
3.46 “L9” Indoor Unit: Inverter Start up
Error................................................187
3.47 “LC” Outdoor Un
it: Malfunction of Transmission between Inverter 
and Control PC Board ..........................................................................188
3.48 “LC” Indoor Unit: Malfunction o
f Transmission between Inverter 
and Control PC Board ..........................................................................189
3.49 “LH” Indoor Unit: Converter Err
or..........................................................190
3.50 “ P1 ” Outdoor Unit: High Voltage of Capacitor in Main Inverter Circuit ...191
3.51 “P1” Indoor Unit: High Voltage of Capacitor in Main Inverter Circuit .....192
3.52 “
PJ” Indoor Unit: Faulty Combination of PCB
.......................................193
3.53 “U0” Low Pressure Drop Due to Refrigerant Shortage or Electronic 
Expansion Valve Failure.......................................................................194
3.54 “U2” Power Supply Insufficient or Instantaneous Failure......................196
3.55 “U2” Power Supply Insufficient or Instantaneous Failure......................198
3.56 “U4” Malfunction of Transmission between Indoor Unit and Outdoor 
Unit .......................................................................................................200
3.57 “U4” Malfunction of Transmission Indoor Unit.......................................202
3.58 “U5” Malfunction of Transmission between Remote Control and Indoor
Unit .......................................................................................................203
3.59 “U7” Indoor Unit: Malfunction of Transmission Outdoor Unit ................204
3.60 “U8” Malfunction of Transmission between Main and Sub Remote 
Controls ................................................................................................205
3.61 “UA” Communication Error between Outdoor Unit and Indoor Unit ......206
3.62 “UF” System is not Set yet ....................................................................207
3.63 “ UH ” Malfunction of System, Refrigerant System Address Undefined ..208
Part 8 - Appendix ........................................................................ 213
1. Specifications ......................................................................................214
1.1 ESP Curves..........................................................................................214
2. Piping Diagrams..................................................................................216
2.1 Outdoor Unit .........................................................................................216
2.2 Indoor Unit............................................................................................218
3. Wiring Diagrams..................................................................................222
3.1 Outdoor Unit .........................................................................................222
3.2 Field Wiring Connection Diagram...
......................................................226
3.3 Indoor Unit............................................................................................227
4. Thermistor Resistance / Temperature Characteristics........................239
5. Pressure Sensor .................................................................................242
6. Method of Replacing the Inverter’s Power Transistors Modules.........243
7. External Backup Heater Kit .................................................................246
7.1 Model Name .........................................................................................246
7.2 Main Components ................................................................................247
7.3 Technical Specifications.......................................................................249
7.4 Detailed Explanation of Setting Modes ................................................250
7.5 External Backup Heater Control...........................................................251
7.6 Troubleshooting by Indication on the Remote Controller .....................253
7.7 Troubleshooting: General Symptoms...................................................254
7.8 Switch Box Layout................................................................................255
7.9 Wiring Diagrams...................................................................................257