Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 - Manual (Page 35)

35
Problem Possible Cause Remedy
[1] Cabinet
temperature too
high. (continued)
g) Defrost 1. Defrost time
insufficient to remove
frost. Operation in
humid conditions.
1. See "4. Cabinet Defrost."
2. Incomplete defrost. 2. See "4. Cabinet Defrost."
h) Air Filter or Condenser 1. Clogged, dirty. 1. Clean.
i) Cabinet Fan Motor 1. Defective. 1. Check and replace.
j) Cabinet Liquid Line
Valve
1. Does not open. 1. Check and replace.
k) Service Valve(s) 1. Partially or completely
closed.
1. Confirm service valve is
open.
l) Refrigerant 1. Leak. 1. Recover, repair leak,
replace drier, evacuate, and
recharge.
m) Expansion Valve 1. Operating erratically. 1. Check and replace.
n) Compressor 1. Defective. 1. See "1.[3] Compressor will
not start or stops operating."
o) Control Board 1. Defective. 1. Replace.
[2] Cabinet temperature
too low.
a) Setpoint and/or
Temperature
Correction Factor
1. Incorrect. 1. Correct setting(s).
See "II.D.4.c) Temperature
Setpoint" or
"II.D.4.f) Temperature
Correction Factor" for
defaults.
b) Frozen Food 1. Frozen food recently
placed in refrigerator.
1. Allow time for unit to return
to setpoint temperature.
c) Cabinet Thermistor 1. Defective. 1. Check and replace.
d) Cabinet Liquid Line
Valve
1. Does not close. 1. Check and replace.
e) Compressor Relay 1. Defective; contacts
welded.
1. Replace.
f) Control Board 1. In alarm or defective. 1. See "III.A Alarm Signals" or
replace.