Error Code Table for Vertex Ducted Central Split (DYC-18) SystemsUpdated 4 days ago
This article provides an error code table for Vertex Ducted Central Split (DYC-18) systems.
| Code | Failure or Protection Definition |
| ATL | Overtemperature protection |
| dC | Force Cooling mode |
| df | Defrost mode |
| d0 | Oil return mode |
| E1 | Communication error (indoor unit) |
| E2 | T1 sensor error |
| E3 | T2 sensor error |
| E4 | Indoor refrigerant sensor detecting leakage error |
| E6 | Refrigerant leakage fault |
| E7 | Indoor control board chip failure or EEPROM failure (indoor unit) |
| E8 | Fan motor error or indoor fan protection (indoor unit) |
| E9 | Smart controller communication error |
| F0 | Communication failure (outdoor unit) |
| F4 | T4 outdoor ambient temperature sensor error |
| F5 | T5 exhaust temperature sensor error |
| F6 | T3 condenser temperature sensor error |
| F7 | T7 temperature sensor error |
| F8 | T7 temperature sensor error in detecting condensation risks |
| F9 | AC overvoltage or undervoltage protection |
| FA | EEPROM failure (outdoor unit) |
| FB | EEPROM failure of the driver chip |
| FC | IPM module temperature fault |
| FD | HLP pressure sensor failure |
| FE | T3 or T5 sensor disconnect error |
| FF | High pressure switch disconnection |
| H0 | Communication fault of the master board and driver chip |
| H1 | T3 sensor high temperature error (Cooling mode) (Three times P5 error within 180 minutes) |
| H2 | High pressure switch error (Three times P1 error within 150 minutes) |
| H3 | High pressure abnormal failure protection (Heating mode) (Three times PD error within 180 minutes) |
| H4 | IPM modular high temperature error (Three times P8 within 120 minutes) |
| H5 | Low pressure abnormal failure protection (Five times P2 within 240 minutes) |
| H6 | T5 exhaust temperature too high protection (Three times P4 within 100 minutes) |
| H7 | Wet operation error (Three times PC within 200 minutes) |
| H8 | T3 condenser sensor disconnect error (Three times FE within 120 minutes) |
| HC | Discharge temperature sensor disconnect error (Three times FE within 180 minutes) |
| HE | Condensate error (Three times within 60 minutes) |
| L0 | DC cable bus low-voltage protection |
| L1 | DC cable bus high-voltage protection |
| LA | Frequency limitation by voltage |
| LB | Frequency limitation or decline by high pressure |
| LC | Frequency limitation by condenser temperature |
| LD | Frequency limitation by discharge temperature |
| LE | Frequency limitation by IPM modular high temperature |
| LF | Frequency limitation by current |
| P1 | High pressure switch protection |
| P2 | Low pressure abnormal failure protection |
| P3 | Overcurrent protection of the primary side or secondary side |
| P4 | T5 exhaust temperature too high protection |
| P5 | T3 outdoor coil temperature over-high protection (Cooling mode) |
| P6 | IPM module protection |
| P7 | T2 freeze protection |
| P8 | IPM high temperature protection (Ft) |
| P9 | DC fan malfunction |
| PC | Wet operation malfunction |
| PD | High pressure abnormal failure protection (Heating mode) |