Brand: SANYO
Category: Air Conditioner
Document Type: Manual
Language: EN
Manual for KHS1872 + CH1872 / KHS2472 + CH2472
Uploaded: Nov. 21, 2025, 7:02 p.m.
Warranty Information
Refer to the provided documentation for warranty details.
System Operation: This manual covers the operation, installation, and servicing of SANYO DC Inverter Split System Air Conditioners, models KHS1872 + CH1872 and KHS2472 + CH2472.
Installation: Includes detailed instructions for mounting indoor and outdoor units, connecting refrigerant tubing using the flaring method, insulating tubing, and wiring. Emphasis is placed on safety precautions, electrical codes, and proper handling of the R410A refrigerant.
Servicing: Provides information on checking electrical components, troubleshooting common issues, performing air purging with a vacuum pump, and testing the air conditioner's operation.
Key Features: The units utilize DC Inverter technology and R410A refrigerant. The manual includes performance data, dimensional information, and diagrams for refrigerant flow and component specifications.
Troubleshooting and error codes
| Section | Topic | Page |
|---|---|---|
| 9. TROUBLESHOOTING | Precautions before Performing Inspection or Repair | 42 |
| 9. | Method of Self-Diagnostics | 42 |
| 9. | Checking the Indoor and Outdoor Units | 45 |
| 9. | Trouble Diagnosis of Fan Motor | 49 |
| 9. | Noise Malfunction and Electromagnetic Interference | 51 |
| 10. CHECKING ELECTRICAL COMPONENTS | Measurement of Insulation Resistance | 52 |
| 10. | Checking Continuity of Fuse on PCB Ass'y | 53 |