12
C. Service Diagnosis Table
First see "III.G. Error Codes." If there are no recorded errors, refer to the table below.
No Ice Production - Possible Cause
1. Power Supply
a) Off, blown fuse, or tripped breaker.
b) Not within specifications.
2. Fuse (Control Box)
a) Blown.
3. Control Switch
a) In "OFF" or "WASH" position.
b) Bad contacts.
4. Control Board
a) Error. See "III.G. Error Codes."
b) Defective.
5. Bin Control
See "II.D. Bin Control Check and
Cleaning"
a) Tripped with bin filled with ice.
b) Actuator does not move freely.
c) Defective.
6. Water Supply
a) Water supply off or improper water pressure.
b) External water filters restricted.
7. Inlet Water Valve
a) Screen or orifice restricted.
b) Coil winding open.
8. Compressor
a) Compressor relay/magnetic contactor contacts bad or coil winding
open.
b) Start capacitor or run capacitor defective (single phase).
c) Internal protector open.
d) Start relay contacts bad or coil winding open (single phase).
e) Defective.
9. Hot Gas Valve
a) Defective.
10. Evaporator (Cube Control)
Thermistor
See "II.E. Evaporator Thermistor
Check"
a) Loose, disconnected, or defective.
11. Pump Motor
a) Defective.
12. Thermostatic Expansion Valve
a) Bulb loose.
b) Defective.
13. Fan Motor
a) Defective.
14. Water System
a) Water leaks.
Low Ice Production - Possible Cause
Long Harvest Cycle
1. Evaporator
a) Scaled up.
2. Refrigerant Charge
a) Low.
3. Control Board
a) Thermistor connection loose (K3).
b) Defective.
4. Evaporator (Cube Control)
Thermistor
See "II.E. Evaporator Thermistor
Check"
a) Loose, disconnected, or defective.
5. Hot Gas Valve
a) Erratic or closed.
6. Compressor
a) Inefficient or off.
Summary of Contents for IM-50BAA-Q
Page 52: ...51 C Wiring Diagram ...
