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G. Diagnostic Charts

Before consulting the diagnostic charts, check for correct installation, proper voltage per

unit nameplate, and adequate water supply. Check the control board using the steps in

"IV.B. Control Board Check." Check the dip switch settings to assure that S4 dip switch 3, 4,

7, 8, 9, 10 and S5 (KM-1601SAH/3 "G"CB) dip switch 1 through 5 are in the factory default

position. S4 dip switch 1, 2, 5, 6 are cleaning adjustments and the settings are exible. For

factory default settings, see "II.C.3.a) Default Dip Switch Settings."

1. No Ice Production

No Ice Production - Possible Cause
1. Power Supply a) Off, blown fuse, or tripped breaker.
b) Not within specications.
2.Main Transformer (230V/115V)
(3 Phase Only)
a) Coil winding open or shorted.
3.Water Supply a) Water supply off or improper water pressure.
b) External water lters clogged.
4.Interlock Switch (Cleaning
Valve)
a) Open position.
b) Bad contacts.
5.Thermostatic Bin Control
See "IV.C. Bin Control Check."
a) Tripped with bin lled with ice.
b) Ambient temperature too cool.
c) Set too warm.
d) Bulb out of position.
e) Bad contacts.
6.Fuse (Control Box) a) Blown.
7. Control Switch a) Bad contacts.
8.High-Pressure Switch a) Bad contacts.
b) Dirty air lter (air-cooled models).
c) Clogged condenser.
d) Ambient temperature too warm.
e) Refrigerant overcharged.
f) Fan not operating (air-cooled and remote air-cooled models).
g) Refrigerant lines or components plugged.
h) Headmaster (C.P.R.) open (remote air-cooled models).
i) Condenser water temperature too warm (water-cooled models).
j) Insufficient water supply to condenser (water-cooled models).
k) Water regulating valve out of adjustment or defective (water-cooled
models).
l) Condenser water temperature too warm.
9.Control Transformer
(115V/10.5V)
a) Coil winding open or shorted.
10. Control Board
See "IV.B. Control Board Check."
a) In alarm.
b) Defective.
11. Thermistor
See "IV.E. Thermistor Check."
a) Leads shorted or open.
12. Hot Gas Valve a) Open in freeze cycle.
b) Closed in harvest cycle.