Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 - Manual (Page 34)

34
Problem Possible Cause Remedy
[3] Compressor will
not start or
stops operating.
(continued)
f) Voltage 1. Too low. 1. Call electrician.
2. Too high. 2. Call electrician.
g) High Pressure Switch 1. Restricted air flow to
condenser.
1. Move unit or increase
ventilation.
2. Condenser air filter
and/or condenser
clogged.
2. Clean.
3. Bad contacts. 3. Check continuity and
replace.
4. Condenser fan motor. 4. See [2] a) and b).
g) High Pressure Switch
(continued)
5. Refrigerant line or
component plugged or
restricted.
5. Recover, remove
restriction, replace drier,
evacuate, and recharge.
6. Refrigerant overcharge. 6. Recover, evacuate, and
recharge.
7. Non-condensibles in
system.
7. Recover, replace drier,
evacuate, and recharge.
h) Thermistors (cabinet
and rail)
1. Defective. 1. See "II.E. Thermistor
Check."
i) Compressor Overload 1. Defective. (open
contacts)
1. Replace.
j) Compressor 1. Open windings. 1. Check for continuity and
replace.
2. Locked rotor. 2. Replace.
k) Control Board 1. In alarm or defective. 1. See "III.A. Alarm Signals"
or replace
2. Cabinet Cooling
Problem Possible Cause Remedy
[1] Cabinet
temperature too
high.
a) Warm Food 1. Warm food recently
placed in cabinet area.
1. Pre-cool food or allow time
for unit to return to setpoint
temperature.
b) Doors/Drawers 1. Left open, opened too
often.
1. Close.
2. Not sealing, opened
frequently, or open for
long intervals.
2. Check for sealing, check for
door open at time of warm
cabinet temperature.
c) Outside Heat Source 1. Too close to unit. 1. Separate unit from heat
source.
d) Air Flow 1. Blockage inside
cabinet.
1. Remove blockage by
removing or redistributing
food product.
e) Cabinet Thermistor 1. Defective. 1. See "II.E. Thermistor
Check."
f) 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.