| Document type | Service Information Letter |
|---|---|
| Document number | SI0622 |
| Equipment | YK Centrifugal Chiller |
| Brand | YORK |
| Revised | 2025-04-08 |
| File size | 0.9 MB |
Fault codes in this document
2 of these messages are explained on a page of their own — cause, what to check, reset — written from this manual:
Possible errors when installing the private key
| Code / display | Meaning | Cause | Action | Page |
|---|---|---|---|---|
| SD card is not present | The SD card interface port is not detecting that a SD card is installed. | SD card did not seat all the way in J26; SD card lock switch on; incompatible SD card; J26 hardware issue. | If the Initialize Security button does not disappear, correct the error and repeat the required procedure. | 5 |
| Key file is missing | There is no file on the SD card named NEWCKEY.dat. | This error can be caused when extra numbers or characters are added to the file name. | If the Initialize Security button does not disappear, correct the error and repeat the required procedure. | 5 |
| Invalid file | The NEWCKEY.dat file does not have the correct file ID. | This error can occur if you are not using the correct key file for the chiller. | If the Initialize Security button does not disappear, correct the error and repeat the required procedure. | 5 |
| Signature error | The security signature associated with the software version is not correct. | This error can occur if you are not using the correct key file for the chiller. | If the Initialize Security button does not disappear, correct the error and repeat the required procedure. | 5 |
| Incorrect software version | The software version used to create the key does not match the software installed on the panel. | This error can occur if you were provided with the incorrect software version when requesting the private key. | If the Initialize Security button does not disappear, correct the error and repeat the required procedure. | 5 |
| Time error | The private key is more than 30 days old. | Incorrect panel date; private key has expired, and you need to request a new one. | If the Initialize Security button does not disappear, correct the error and repeat the required procedure. | 5 |
| Incorrect serial number | The serial number that was used to create the key does not match the serial number entered in the panel. | This error could occur if you entered the incorrect serial number in the panel but the correct number was provided when the key was requested. | If the Initialize Security button does not disappear, correct the error and repeat the required procedure. | 5 |
Every row above cites the page of this document it came from, and each one is re-read against that page by an automatic check before publication. The short table of all YORK YK messages: fault codes.
Manufacturer document, published here as reference material for equipment we supply. The original lives at docs.johnsoncontrols.com. The rights holder may ask us to take it down — we will.