Thermo King CSR Series User Manual

MP-3000 Controller
114
16* Condenser Fan Current Too High
(Check Alarm)
• Occurs during pre-trip (PTI) or function test only.
• When the condenser fan power consumption is
25% above expected current draw (above 1.5 to
1.9 amps, depending on voltage).
• Indicates:
• Defective or stuck condenser fan motor
• Defective volt or amp meter on relay board
• Incorrect motor or motor connections
• Enter Manual Function Test and start
condenser fan. Make sure the fan starts.
Check fan motor volts and amps.
• Check power supply volts and amps.
• Check volt and ampere meter.
17* Condenser Fan Current Too Low
(Check Alarm)
• Occurs during pre-trip (PTI) or function test only.
• Condenser fan power consumption is 25% below
expected current draw (below 0.5 to 0.7 amps,
depending on voltage).
• Indicates:
• Defective condenser fan motor relay
• Defective or open fan motor internal over
temperature protection switch
• Defective volt or amp meter on relay board
• Enter Manual Function Test and start
condenser fan. Make sure the fan starts.
Check fan motor volts and amps.
• Check power supply volts and amps.
• Check volt and ampere meter.
18 Power Supply Phase Error
(Alarm)
• One or more frequency inputs are missing for more
than 20 seconds.
• Indicates:
• One phase on power line is missing
• Defective fuse on relay board
• Defective digital inputs on relay board
• Defective controller
• Enter Data menu and view voltage reading on
each phase.
• Check all fuses. Check cable No. 1 on relay
board.
• Check cable No. 1 between controller and
relay board.
• Replace relay board. Check voltage reading
on each phase.
*If both alarms 16 and 17 are activated, the alarms are caused by a large difference in measured amps. Enter Manual Function
Test menu and start the condenser fan. Check the condenser fan amps measurement. If necessary, check the resistance in the
motor between CF1 and CF2, CF2 and CF3, and CF1 and CF3. Resistance readings should be equal (approximately 25
Ohms).
Alarm Codes, Descriptions and Corrective Actions (Continued)
Code Description Corrective Action

Thermo King CSR Series Specifications

General

Brand	Thermo King
Model	CSR Series
Category	Refrigerator
Language	English