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F. Diagnostic Charts
1. No Ice Production
No Ice Production - Possible Cause
1. Power Supply a) Off, blown fuse, or tripped breaker.
b) Not within specications.
2. Main Transformer
(208-230VAC/115VAC) (3 Phase
Only)
a) Voltage tap switch not set to proper voltage.
b) Coil winding open or shorted.
3. Water Supply a) Water supply off or improper water pressure.
b) External water lters clogged.
4. Fuse (SRK Control Box) a) Blown.
5. High-Pressure Switch (SRK) a) Dirty condenser.
b) Condensing unit fan(s) not operating.
c) Headmaster (C.P.R.) open.
d) Refrigerant overcharged.
e) Bad contacts.
f) Refrigerant lines or components plugged.
6. Discharge Line Thermostat
(SRK)
a) Ambient temperature too warm.
b) Compressor or compressor components faulty.
c) Defective.
d) Hot gas valves open.
e) Dirty condenser.
f) Condensing unit fan not operating.
7. Wire Harness
(From SRK to KMS)
a) Disconnected or loose connection.
8. Fuse (KMS Switch Box) a) Blown.
9. Control Switch a) In "SERVICE" or "OFF" position.
b) Bad contacts.
10. Control Transformer
(115VAC/10.5VAC)
a) Coil winding open or shorted.
11. Control Board
See "IV.B. Control Board Check"
a) In alarm.
b) Yellow "BC OPEN" LED on (bin full).
c) Defective.
12. Bin Control
See "IV.C. Bin Control Check and
Cleaning"
a) Tripped with bin lled with ice.
b) Actuator does not move freely.
c) Defective.
13. Fill/Rell or Harvest Water Valve a) Screen or orice clogged.
b) Coil winding open.
c) Water valve open in freeze cycle.
14. Float Switch
See "IV.D. Float Switch Check
and Cleaning"
a) Float does not move freely.
b) Defective.