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648PRO & ICB648PRO Error Code T
able
EC ZONE SERVICE INSTRUCTION
01 X Zone “X” Cabinet Thermistor Failure (Device or Wiring)
02 X Zone “X” Evaporator Thermistor Failure (Device or Wiring)
03 X Zone “X” Condenser Thermistor Failure (Device or Wiring)
04 0 Ambient Thermistor Failure (Device or Wiring)
20 X Check Zone “X” Defrost Bi-metal for Proper Operation
21 X Check Zone “X” Defrost Bi-metal for Proper Operation
22 X Check Zone “X” Defrost Wiring
23 X Check Zone “X” Defrost Wiring
24 X Check Zone “X” Defrost Heater Ohms
30 0 Check for Stuck Icemaker or Water Valve Failure
35 X Check Zone “X” Fan, Fan Speed Error
40 X Zone “X” Excessive Run
41 X Check Zone “X” Compressor and Wiring
42 0 Check Condenser Fan and/or Wiring
43 X Check Left Refrigerant Valve and Wiring
44 X Check Zone “X” Glass Door Heater and Wiring
45 X Errors Detectable with Red Door Switches-Disabled Now.
Check Overhead Lighting
46 0 Check Ice Accessory Wiring for Open Circuit
47 3 Check Accent Lighting Wiring for Short Circuit
80 X Check Power to Compressor Controller for Zone “X”,
Troubleshoot with Manual Activation Mode
83 X Replace Zone “X” VS Compressor and Filter-Drier
84 X Check Zone “X” VS Compressor Wiring
85 X Zone “X” VS Compressor Control Overheat
86 X Check Communication Wiring, Replace Zone “X” VS
Controller
87 X Check for Broken Wiring or Open Defrost Heater
89 X Check Icemaker Solenoid Valve and Wiring
90 X Change Main Control Board
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