Si33-105
iv Table of Contents
6.4 Improper Combination of Optional Controllers
for Centralized Control .........................................................................207
6.5 Address Duplication, Improper Setting.................................................208
7. Troubleshooting (OP: Schedule Timer)...............................................209
7.1 Malfunction of Transmission
Between Central Remote Controller and Indoor Unit ...........................209
7.2 PC Board Defect ..................................................................................210
7.3 Malfunction of Transmission
Between Optional Controllers for Centralized Control..........................211
7.4 Improper Combination of Optional Controllers
for Centralized Control .........................................................................212
7.5 Address Duplication, Improper Setting.................................................213
8. Troubleshooting (OP: Unified ON/OFF Controller) .............................214
8.1 Operation Lamp Blinks.........................................................................214
8.2 Display “Under Host Computer Integrate Control” Blinks
(Repeats Single Blink)..........................................................................215
8.3 Display “Under Host Computer Integrate Control” Blinks
(Repeats Double Blink) ........................................................................217
Part 6 Appendix R407C PLUS Series
Heat Recovery System................................................... 219
1. Piping Diagram....................................................................................220
1.1 Outdoor Unit.........................................................................................220
1.2 BS Unit .................................................................................................222
1.3 Indoor Unit............................................................................................224
2. Wiring Diagram ...................................................................................225
2.1 Outdoor Unit.........................................................................................225
2.2 BS Unit .................................................................................................227
2.3 Indoor Unit............................................................................................228
3. Characteristics ....................................................................................240
3.1 R407C Characteristics .........................................................................240
3.2 Thermistor Resistance / Temperature Characteristics.........................241
3.3 Pressure Sensor...................................................................................243
3.4 Method of Replacing The Inverter’s Power Transistors
and Diode Modules ..............................................................................244
4. Precautions in Servicing The Models with New-type Refrigerant .......246
4.1 Tools Required.....................................................................................246
4.2 Notes for Work Procedures..................................................................247
Index ............................................................................................. i
Drawings & Flow Charts ................................................................ v
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