Hoshizaki FD-1001MLH(-C) Service Manual page 73

Problem
[4] Freeze cycle will not
start (compressor)
(continued).
[5] Freeze cycle
starts, but no ice is
produced.
Possible Cause
d) Compressor
e) Power Supply
a) Refrigerant Line
b) Expansion Valve
(TXV) (not adjustable)
c) Compressor
d) Headmaster (C.P.R.)
(remote air-cooled
model)
e) Water Supply Line
(water-cooled model)
f) Water Regulating
Valve (water-cooled
model)
1. Wiring to compressor. 1. Check for loose or open
2. Loose connections.
3. Motor winding opened
or grounded.
4. Compressor locked
and motor protector
tripped.
1. Not within
specifications.
1. Gas leaks.
2. Refrigerant line or
component restricted.
1. Defective.
1. Defective.
1. Not operating properly
and liquid line
temperature too warm.
1. Condenser water
pressure too low or
off and high pressure
control opens and
closes frequently.
1. Set too high.
73
Remedy
connection, repair or replace.
2. Tighten.
3. Replace.
4. Replace.
1. Refer to nameplate and
correct.
1. Check for leaks with a leak
detector. Repair leaks.
Replace drier and charge
with refrigerant. See "V.A.
Service for Refrigerant
Lines."
2. Remove the restriction or
component and replace the
drier.
1. Replace.
1. See "2.[1]g) Compressor".
1. Replace.
1. Check and get
recommended pressure.
1. Adjust or replace. See
"V.H. Adjustment of Water
Regulating Valve."