Service - Service Assurance
Professional Excellence, Lasting TrustProfessional Maintenance Services
We are committed to providing attentive service to every customer.
 |
| |
| Precision Manufacturing Process | Accurate Quality Inspection | |
| We benchmark against the world's highest standards of lean manufacturing and smart manufacturing, achieving over 20% annual improvement in production efficiency. | From the user's perspective, we strictly control every quality checkpoint to ensure each product undergoes rigorous testing before leaving the factory. | |
|
| |
| Standardized Installation Management | Thoughtful After-sales Service | |
| We optimize the selection of installation partners and enhance standards for key materials while establishing comprehensive installation guidelines. | Our 24/7 national toll-free service hotline (400) is available at all times, supported by a professional after-sales team that continuously strengthens technical training. |
Fault code table | |||
Frequency converter fault code table | |||
Classification | Outdoor light flashes | Indoors | Fault content |
Protected category | 2 or 39 | / | Overvoltage and undervoltage protection |
3 | / | Overcurrent protection | |
4 | / | Excessive exhaust temperature protection | |
5 | / | Refrigeration overheat protection | |
6 | / | Variable frequency drive protection | |
20 | / | Outdoor fan overcurrent protection | |
31 | / | Outdoor environmental protection | |
32 | / | Refrigeration protection against overcooling | |
33 | / | Heating to prevent overheating | |
48 | E9 | IPM overcurrent protection | |
Fault category | 7 | E0 | Indoor and outdoor communication failure |
9 | E7 | The outdoor temperature sensor is faulty | |
10 | E3 | The external coil temperature sensor is faulty | |
11 | E8 | The exhaust temperature sensor is faulty | |
13 | EA | Current sensor failure | |
16 or 20 | EF | Outdoor fan failure | |
19 or 27 | EE | Indoor and outdoor EEPR0M faults | |
21 or 28 | E6 | Indoor fan failure | |
25 | E1 | Fault of the room temperature sensor | |
26 | E2 | The inner disk temperature sensor is faulty | |
30 or 14 | E9 | Variable frequency drive, module failure | |
37 | E9 | The phase current detection circuit is abnormal | |
Fixed-frequency machine fault code table | |||
Indoors | Fault content | ||
Er | Zero-crossing fault | ||
E1 | Fault of the room temperature sensor | ||
E2 | The inner disk temperature sensor is faulty | ||
E6 | Indoor fan failure | ||
HEALTHY COOLNG & HEATING
Reliable Partner Brand
Comprehensive one-stop OEM services
From design and production to delivery, we provide fully managed services for you!
