Carrier PC211 Solid-State Starters

14. Restore chiller to norm a l operation, calibra te motor amps.
Solid-State Starters
Troubleshooting guid es and information pert ai ning to the operation of th e solid-state starter
may be found in Figure 46, Figure 47, Figure 48, Figure 49, Figur e 50 , Figure 51, Figure 52,
Table 12, and Table 13.
Attempt to solve the problem by using the following preliminary checks before consulting t he
troubleshooting t ables.
When the power is off:
• Inspect for physical dam a ge and signs of arcing, over h eating, etc.
• Is the wiring to the start er correct?
• Are all connections in the starter tight?
• Is the current feedbac k re s is t or properly adjusted and in stalled?
• Is a heater coil install ed in each leg of the motor?
• Is the control transformer fuse blown?
• Is the motor connected to the starter?
Testing Silicon Control Rec tifiers in Benshaw, Inc. Solid- State Starters
If a silicon control rect ifier (SCR) is suspect ed of being defective , use the following proc edure
as part of a general troub les h ooting guide.