Diagnosis: Troubleshooting, Status Messages, Alarm Codes
158
Evaporator fan motor(s) does
not operate
Unit on defrost
Check operating mode indicator
LEDs
Unit in Economy mode (Frozen Load;
Null mode only)
Check setpoint, indicator lights and
Configuration menu of MP-3000a
controller to verify that Economy
mode is set to On
Loose line connection
Tighten connections
Open motor internal thermal overload
protector
Check for seized bearings or
defective thermal overload
protector. Repair or replace as
necessary
Defective motor
Replace motor
Defective low or high speed
evaporator fan contactor
Replace defective contactor
No low or high speed evaporator fan
output signal from controller output
module
Diagnose and replace output
module or controller
Condition
Possible Cause
Remedy
Summary of Contents for 098916
Page 5: ......
Page 11: ...Table of Contents 10...
Page 19: ...Service Guide 18...
Page 28: ...Specifications 27 Figure 2 Physical Specifications AMA313...
Page 41: ...Unit Description Features Options 40...
Page 105: ...Operating Instructions 104...
Page 155: ...Servicing The Unit 154...
Page 187: ...Index 186...
Page 189: ...Wiring and Schematic Diagrams Index 188...
Page 190: ...189 Wiring Schematic...
Page 191: ...190 Wiring Diagram Page 1 of 2...
Page 192: ...191 Wiring Diagram Page 2 of 2...