Brand: DAIKIN
Category: Air Conditioning
Document Type: Manual
Language: EN
Manual for SiUS091601EA
Uploaded: Sept. 12, 2025, 4:30 a.m.
Manual Publish Date: 2019-10-01
The Daikin Service Manual provides comprehensive information for the FTX-N/U Series, FVXS-V Series, and FDMQ-R Series Inverter air conditioning systems. It covers safety precautions, general information, specifications, functions, remote controller details, service diagnosis, trial operation, field settings, and appendixes including piping and wiring diagrams. The manual is intended for trained service personnel to ensure correct maintenance and repair of the equipment.
Troubleshooting and error codes
| General Problem Symptoms | Check Items | Page |
|---|---|---|
| Indoor unit does not operate. | Check for power failure. | 108 |
| Indoor unit does not operate. | Check remote controller settings. | 108 |
| Indoor unit does not operate. | Check Indoor unit PCB abnormality. | 124 |
| No indoor/outdoor unit communication. | Check signal transmission error. | 135, 148, 150, 151, 152 |
| Cooling/Heating is not enough. | Check filter, airflow, refrigerant charge. | 109 |
| Abnormal noise is heard. | Check installation, fan, compressor. | 109 |
| Odor is detected. | Check air filter, drain pan. | 109 |