| Document type | Service Information Letter |
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| Document number | SI0554 |
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| Equipment | YMC2 Magnetic Bearing Centrifugal Chiller |
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| Brand | YORK |
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| File size | 0.2 MB |
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Fault codes in this document
York Chiller Access Manager
| Code / display | Meaning | Cause | Action | Page |
|---|
| You do not have the correct access level to make the change. | Access-level denial message shown when an attempted change is rejected. | Displayed in error when pressing the Maintenance Acknowledge button in Enhanced access with the correct password entered, so the warning could not be cleared. | Corrected in this software release. | 2 |
| Your Access Level Doesn’t Allow This. | Message shown when the current access level does not permit the attempted action. | Displayed in error when pressing the Page Down button on the Access Log screen in Enhanced access, so the next page would not display. | Corrected in this software release. | 2 |
VSD/MBC Initialization
| Code / display | Meaning | Cause | Action | Page |
|---|
| VSD – Initialization In Progress Start Inhibit | Start inhibit displayed while VSD initialization is in progress. | Appeared after bootup and could not be cleared when updating software (earlier software versions). | This has been corrected in this software release. | 3 |
| MBC – Initialization in Progress Start Inhibit | Start inhibit displayed while MBC initialization is in progress. | Appeared after bootup and could not be cleared when updating software (earlier software versions); either this inhibit or the VSD one could appear. | This has been corrected in this software release. | 3 |
MBC
| Code / display | Meaning | Cause | Action | Page |
|---|
| MBC – POWER FAIL LANDING | Fault set on the MBC. | | Cleared using the Clear Fault button. Earlier software did not always display the Clear Fault button when this fault was set; this has been corrected in this software release. | 3 |
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.
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.
