14 Evaporator Fan Low Speed Current Too High (Check Alarm)

Thermo King Alarm Code

Description	Corrective Action
Evaporator Fan Low Speed Current Too High (Check Alarm) Occurs during Pretrip (PTI) or Function test only. (Evaporator fan power consumption is 25% above expected current draw (above 2.8 to 4.0 amps, depending on voltage).If CRR Model) (Evaporator fan power consumption is 25% above expected current draw (above 1.0 to 2.0 amps, depending on voltage).If CSR Model) Indicates: Defective or stuck evaporator fan motor Incorrect motor or motor connections Motor high and low speed connection are interchanged Defective volt or amp meter on relay board	Open evaporator door and make sure all fans rotate freely. Enter Manual Function Test and start evaporator fans on LOW speed. Make sure all fans start on low speed. Check fan motor volts and amps. Check volt and ampere meter.

Description

Corrective Action

Evaporator Fan Low Speed Current Too High (Check Alarm)

Occurs during Pretrip (PTI) or Function test only.
(Evaporator fan power consumption is 25% above expected current draw (above 2.8 to 4.0 amps, depending on voltage).If CRR Model)
(Evaporator fan power consumption is 25% above expected current draw (above 1.0 to 2.0 amps, depending on voltage).If CSR Model)
Indicates:
Defective or stuck evaporator fan motor
Incorrect motor or motor connections
Motor high and low speed connection are interchanged
Defective volt or amp meter on relay board

Open evaporator door and make sure all fans rotate freely.
Enter Manual Function Test and start evaporator fans on LOW speed. Make sure all fans start on low speed. Check fan motor volts and amps.
Check volt and ampere meter.

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