Thermo King CSR Series User Manual

MP-3000 Controller
124
56 Compressor Temperature Too High
(Shutdown Alarm)
• Compressor discharge line temperature is above
148 C (298 F). Compressor stopped until discharge
line temperature decreases to normal.
• Indicates:
• Air in refrigeration system
• Low refrigerant charge
• Defective compressor or valve plate
• Defective liquid injection system
• Wrong or defective sensor
• Operate unit on Cool and check discharge and
suction pressure gauge readings.
• Enter Manual Function Test menu and test
(operate) Injection Valve to determine if valve
opens (energizes).
• Check compressor discharge sensor
resistance. Resistance must be 100,000 ohms
at 25 C (77 F).
• Check discharge line temperature with a
separate electronic thermometer and compare
to “HIGH PR TEMP” shown in the Data menu
of controller.
NOTE: Unit will operate normally without
compressor sensor. However, controller
compressor high temperature protection is
not active.
57 AFAM Control Module or Motor Error
(Check Alarm)
• Controller is unable to adjust vent door to desired
position.
• Indicates:
• Frozen or stuck vent door
• Defective linkage
• Defective control module
• Open circuit to control module or motor
• Defective motor
• Visually inspect the vent door and linkage for
ice or obstruction. Check for proper linkage
adjustment.
• Check wiring connections to the AFAM circuit
board for continuity using a high quality
multimeter.
• Check motor winding for continuity using a
high quality multimeter.
58 Phase Sensor Error
(Check Alarm)
• Occurs during pre-trip (PTI) or function test only.
• During Phase Sensor Test, amperage difference
between correct and wrong condenser fan rotation
is more than 0.2 amps.
• Indicates:
• Defective phase relay
• Defective relay board
• Defective relay board cable No. 2
• Start a Function Test. During step F1.05,
check whether the phase relays on relay
board receive a signal (LED energizes). Verify
that the relays respond and shift to reverse
phase.
59 Delta Current Error
(Check Alarm)
• 100% ampere difference between current phases.
• Indicates:
• Open connection on one phase of power supply
to a motor or heater element
• Enter Manual Function Test menu and test
(operate) each 3-phase component to locate
defective connection.
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