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Section 1: SPECIFICATIONS .....................................................................................................1-1
1-1. Unit Specifications ..............................................................................................1-2
1-2. Major Component Specifications ......................................................................1-29
1-3. Other Component Specifications ......................................................................1-53
1-4. Dimensional Data..............................................................................................1-56
1-5. Refrigerant Flow Diagram ................................................................................. 1-70
1-6. Operating Range ...............................................................................................1-71
1-7. Capacity Correction Graph According to Temperature Condition ..................... 1-72
1-8. Noise Criterion Curves ......................................................................................1-73
1-9. Increasing the Fan Speed ................................................................................. 1-82
1-10. External Static Pressure Setting ......................................................................1-83
1-11. Air Throw Distance Chart ................................................................................1-89
1-12. ELECTRICAL WIRING ....................................................................................1-97
1-13. Installation Instructions .................................................................................. 1-100
Section 2: PROCESSES AND FUNCTIONS ..............................................................................2-1
2-1. Room Temperature Control .................................................................................2-2
2-2. Cold Draft Prevention (Heating Cycle) ................................................................ 2-4
2-3. Automatic Fan Speed (Indoor Unit) ..................................................................... 2-5
2-4. Control Functions ................................................................................................2-6
2-5. Outdoor Unit Control PCB...................................................................................2-9
2-6. Outdoor Unit Control PCB (CR-CH4272R) ....................................................... 2-10
Section 3: ELECTRICAL DATA ..................................................................................................3-1
3-1. Indoor Units ........................................................................................................3-2
3-2. Outdoor Units ....................................................................................................3-14
Section 4: SERVICE PROCEDURES ......................................................................................... 4-1
4-1. Meaning of Alarm Messages ..............................................................................4-2
4-2. Symptoms and Parts to Inspect .......................................................................... 4-5
4-3. Details of Alarm Messages .................................................................................4-8
4-4. Table of Thermistor Characteristics .................................................................. 4-16
Section 5: OUTDOOR UNIT MAINTENANCE REMOTE CONTROL ........................................5-1
In the case of CZ-RTC2
5-1. Overview ............................................................................................................. 5-2
5-2. Functions ............................................................................................................5-2
5-3. Normal Display Operations and Functions ......................................................... 5-3
5-4. Monitoring Operations: Display of Indoor Unit and Outdoor Unit Sensor
Temperatures ......................................................................................................5-6
5-5. Monitoring the Outdoor Unit Alarm History: Display of Outdoor Unit
Alarm History ......................................................................................................5-7
5-6. Setting Modes: Setting the Outdoor Unit EEPROM ............................................ 5-7
In the case of CZ-RTC4
5-7. Overview ........................................................................................................... 5-11
5-8. Functions ..........................................................................................................5-12
5-9. Normal Display Operations and Functions ....................................................... 5-13
5-10. Monitoring Operations: Display of Indoor Unit and Outdoor Unit Sensor
Temperatures ...................................................................................................5-18
5-11. Monitoring the Outdoor Unit Alarm History: Display of Outdoor Unit
Alarm History ...................................................................................................5-20
5-12. Setting Modes: Setting the Outdoor Unit EEPROM .........................................5-21
Contents
SM830203-04.indb 6 15/10/13 17:18:01
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