Issue:
Phase Loss...Benshaw Solid State Starter (SSS)
Resolution:
- RTHD, RTHC, RTHB Chillers
- UCP2 and CH530 Controls
- Set the CH530 (UCP2) Phase Reversal Protection to: Disable
- Chiller attempts a start, and faults about 2 seconds later in phase loss. This problem could be intermittent if CH530 (UCP2) Phase Reversal Protection is Enabled.
- The Benshaw Solid State Starter (SSS) has internal phase rotation protection. Due to timing issues with the CH530 controls and the Benshaw SSS starter it is necessary to allow the Benshaw SSS starter to provide phase rotation protection. If there is a phasing problem the Benshaw SSS will output a SSS fault. A technician will then determine that the fault is from the SSS and troubleshoot accordingly. By viewing the fault code (diagnostic) called out on the SSS display it can easily be determined if there is a phase rotation issue.
- See RTHD-SVD02A-EN for reference.
Notes:
This starter has been applied to RTHD, RTHB, and RTHC chillers. Contact Pueblo Technical Support application questions.
Other Question/Problem/Cause Statements:
- Phase Loss or Phase Reversal
- Phase Loss
- Phase Reversal
- Phase Loss; Cutler Hammer S810 IT SSS?
Facts:
- RTHD
- Benshaw Solid State Starter (SSS)
- Phase Reversal Protection...Enabled
- Water-Cooled Chiller (Pueblo) (RTHB)
- Water-Cooled Chiller (Pueblo) (RTHC)
- Water-Cooled Chiller (Pueblo) (RTHD)
Original HUB Document: DOC-77424
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.