Diagnostic Charts; No Ice Production - Hoshizaki KMS-1230MLH Service Manual

B. Diagnostic Charts

1. No Ice Production

Problem
[1] The icemaker will not
start.
Possible Cause
a) Power Supply to
Condensing Unit
b) High Pressure Control 1. Tripped or bad
c) Thermostat (Condens-
ing Unit High Tempera-
ture Safety)
d) Wire Harness Terminal
Block: Condensing Unit
and Icemaker
e) Fuse (Icemaker fused
disconnect, if any)
f) Fuse (10A fuse in
icemaker)
g) Control Switch
h) Transformer
i) Bin Control
j) Wiring to Control Board 1. Loose connections or
k) Water Supply Line
l) Fill Water Valve
1. OFF position.
. Breaker tripped or
fuse blown.
contacts.
. Dirty condenser coil.
3. Refrigerant
overcharged.
4. Fan not operating.
5. Refrigerant line or
components plugged.
1. Tripped or bad
contacts.
1. Loose connection.
1. Blown.
1. Blown.
1. OFF position.
. Bad contacts.
3. Loose connection.
1. Open windings.
1. Tripped with bin filled
with ice.
. Proximity switch stuck
open.
open.
1. Water supply off and
water supply cycle
does not finish.
1. Mesh filter or orifice
clogged.
. Coil winding opened.
3. Wiring to water valve. 3. Check for loose
34
Remedy
1. Move to ON position.
. Check for short circuit or
ground, correct and reset
or replace.
1. Check for continuity, let
reset or replace.
. Clean.
3. Recharge.
4. See chart 1.[6]
5. Clean and replace drier.
1. Let cool and reset. Check
for continuity and replace
if open.
1. Tighten.
1. Check for short circuit and
correct. Reset or replace.
1. Check for short circuit and
replace.
1. Move to ICE position.
. Check for continuity and
replace.
3. Tighten.
1. Replace.
1. Remove ice.
. Replace bin control.
1. Check for continuity and
replace.
1. Check and get
recommended pressure.
1. Clean.
. Replace.
connection or open, and
replace.