Hoshizaki FD-1001MWH(-C) EN - Manual (Page 71)

71
F. Diagnostic Charts
1. No Ice Production
Problem Possible Cause Remedy
[1] The icemaker will not
start.
a) Power Supply 1. Off, blown fuse, or
tripped breaker.
1. Turn on, replace, or reset.
2. Loose connection. 2. Tighten.
3. Bad contacts. 3. Check for continuity and
replace.
4. Not within
specifications.
4. Refer to nameplate and
correct.
b) Water Supply 1. Water supply off or
pressure too low.
1. Check and get
recommended pressure.
c) Power Switch
(Control Box)
1. "OFF" position. 1. Move to "ON" position.
2. Bad contacts. 2. Check for continuity and
replace.
d) Circuit Protect Relay 1. Power supply not
within specifications.
1. Refer to nameplate and
correct or re-wire.
2. Bad Contacts. 2. Check for continuity and
replace.
e) Transformer 1. Coil winding opened. 1. Replace.
f) Fuse (Control Box) 1. Blown. 1. Check for short circuit and
replace.
g) Infrared Sensor 1. No power or defective. 1. See "IV.D. Bin Control
Check."
h) Mechanical Bin
Control (Backup Bin
Control Safety)
1. Tripped with bin filled
with ice. (9-beep
alarm)
1. Remove ice.
2. Mechanical bin control
stuck open.
2. See "IV.D. Bin Control
Check."
3. Actuator paddle does
not move freely.
3. Clean shaft and its
corresponding holes
or replace damaged
components.
i) High Pressure Switch 1. Bad Contacts. 1. Check for continuity and
replace.
2. Dirty air filter or
condenser.
2. Clean.
3. Ambient or condenser
water temperature too
warm.
3. Reduce temperature.
4. Refrigerant
overcharged.
4. Recharge.
5. Fan not operating
(except water-cooled
model).
5. See chart "3.[2.]a) Fan
Motor"
6. Refrigerant line or
component restricted.
6. Remove the restriction or
component and replace the
drier.