| Document type | Service Information Letter |
|---|---|
| Document number | SI0637 |
| Equipment | YK Centrifugal Chiller |
| Brand | YORK |
| Revised | 2025-08-27 |
| File size | 0.2 MB |
Fault codes in this document
Updated Cycling Fault
| Code / display | Meaning | Cause | Action | Page |
|---|---|---|---|---|
| MOTOR CONTROLLER - FAULT CONTACTS OPEN | Cycling fault for medium voltage variable speed compressor drives; no longer a hybrid safety fault. | At no time will this cycling fault become a safety fault for all starter applications. | 2 |
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.