Diagnostic Charts; No Ice Production - Hoshizaki KM-1601MRH/3 Service Manual

F. Diagnostic Charts
Before consulting the diagnostic charts, check for correct installation, proper voltage per
unit nameplate, and adequate water supply. Check CB 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, are in the factory default position. S4 dip switch 1, 2, 5, 6 are cleaning adjustments
and the settings are flexible. For factory default settings, see "II.C.3.a) Default Dip Switch
Settings."

1. No Ice Production

Problem
[1] The icemaker will not
start.
Possible Cause
a)Power Supply
b)Fuse (Inside fused
disconnect, if any)
c) Control Switch
d)Bin Control Thermostat 1. Tripped with bin filled
e)High Pressure Control
1. OFF position.
2. Loose connection.
3. Bad contacts.
4. Voltage too high or too
low.
1. Blown.
1. OFF position.
2. Bad contacts.
with ice.
2. Ambient temperature
too cool.
3. Set too warm.
4. Bulb out of position.
5. Bad contacts.
1. Bad contacts.
2. Dirty air filter or
condenser.
3. Ambient or condenser
water temperature too
warm.
4. Refrigerant
overcharged.
5. Fan not operating.
6. Refrigerant line or
components plugged.
36
Remedy
1. Move to ON position.
2. Tighten.
3. Check for continuity and
replace.
4. Check and get
recommended voltage.
1. Check for short circuit and
replace.
1. Move to ICE position.
2. Check for continuity and
replace.
1. Remove ice.
2. Increase ambient
temperature.
3. See "IV.C. Bin Control
Check."
4. Place in position.
5. Check for continuity and
replace.
1. Check for continuity and
replace.
2. Clean.
3. Reduce temperature.
4. Recharge.
5. See chart 1.[6]
6. Clean and replace drier.