24VNA6 / 25VNA4 seriesCarrier 87 fault code (24VNA6 / 25VNA4)
VFD Initialization Error
What the manual says
VFD Initialization Error
| Fault | Malfunction | Description |
|---|---|---|
| 13 | 53 | VFD Initialization Error |
Models and series
Listed for: 24VNA6, 25VNA4.
Troubleshooting from the service manual
Code 87-13 VFD Initialization Fault / Code 87-53 VFD System Lockout - Initialization
The VFD communicates identification information to PCM when initializing to run. This information is used to identify the equipment and reference correct operating tables. When unrecognized information is received the PCM will set fault 87-13 and reset the VFD to restart the initialization process. After 3 instances of fault 87-13 within 4 hour period 87-53 malfunction is set and system is locked out for 4 hours. The most likely cause of this fault is an incorrect model plug. Check for correct model plug in model plug table.
24VNA6-25VNA4-1SM, p. 23
Source
Last checked 2026-10-18 against 24VNA6-25VNA4-1SM.
Safety: disconnect power before opening the unit. Gas, high voltage and refrigerant work belongs to a licensed technician.