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Carrier 42QHC009DS User Manual

Carrier 42QHC009DS
45 pages
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15C Inverter Series
Service Manual
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Carrier 42QHC009DS Specifications

General IconGeneral
Cooling Capacity9000 BTU/h
Voltage220-240V
Compressor TypeRotary
Outdoor Unit Noise Level50 dB(A)
Outdoor Unit Weight23 kg
Refrigerant TypeR32
Indoor Unit Weight8 kg
Power SupplySingle Phase, 50Hz

Summary

1. Precaution

1.1 Safety Precaution

Essential safety guidelines to prevent injury and property damage during operation.

1.2 Warning

Critical warnings regarding installation, operation, and maintenance to avoid hazards.

4. Wiring Diagram

6. Installation Details

6.3 Pipe Length and Elevation

6.4 First Time Installation

Air Purging with Vacuum Pump

Procedure for removing air and moisture from the refrigerant system using a vacuum pump.

Adding Refrigerant (>5m) Procedure

Instructions for adding refrigerant when the pipe length exceeds 5 meters.

6.7 Re-installation Outdoor Unit

8. Electronic Function

8.3 Main Protection

Compressor Protections

Covers restart delay, top temp., discharge temp., and preheating functions.

Fan and Module Protections

Addresses indoor fan speed, inverter module, and sensor protections.

Refrigerant Leakage Detection

System feature to detect and respond to refrigerant leaks.

8.4 Operation Modes and Functions

8.4.3 Heating Mode

8.4.4 Auto Mode

9. Troubleshooting

9.1 Indoor Unit Error Display

9.2 Troubleshooting Common Errors

EEPROM Parameter Error (E0/F4)

Diagnosis and solution for EEPROM parameter errors on indoor/outdoor PCBs.

9.2.2 Communication Diagnosis (E1)

9.2.3 Fan Speed Control Error (E3)

9.2.4 Refrigerant Leakage Detection (EC)

9.2.5 Temperature Sensor Error (E5)

9.2.6 IPM Malfunction/Protection (P0)

9.2.7 Voltage Protection (P1)

9.2.8 Compressor Top Temp. Protection (P2)

9.2.9 Inverter Compressor Drive Error (P4)

2. Compressor Checking

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