Hoshizaki RF28A, Руководство по обслуживанию

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Problem Possible Cause Remedy
d) Condenser Fan Motor 1. Failed 1. Replace.
e) Refrigerant 1. Overcharged. 1. Evacuate and recharge.
2. Non-condensibles in
system.
2. Evacuate and recharge.
f) Location of Unit 1. Restricted air flow to
condenser.
1. Move unit or increase
ventilation.
[4] Cabinet inside
temperature too
high; compressor will
not start.
a) Thermistor 1. Open. 1. Check and replace.
b) Compressor Relay 1. Defective. 1. Check and replace.
c) Control Board 1. Defective. 1. Replace.
[5] Cabinet inside
temperature too high.
a) Setpoint and/or
Differential
1. Incorrect. 1. Correct setting(s).
See sections II.C.1 and
II.C.2 for defaults.
b) Door 1. Not sealing, opened
frequently or open for
long intervals.
1. Check for sealing,
check for door open at
time of warm cabinet
temperature.
c) Defrost 1. Defrost time
insufficient to remove
frost.
Operation in humid
conditions.
1. See [8] Evaporator does
not defrost completely.
d) Refrigerant 1. Leak. 1. Repair leak and recharge.
e) Fan Motor 1. Defective. 1. Check and replace.
f) Air Filter 1. Clogged. 1. Clean.
g) Condenser 1. Dirty. 1. Clean.
h) Thermistor 1. Defective. 1. Check and replace.
i) Control Board 1. Defective. 1. Replace.
j) Outside Heat Source 1. Too close to unit. 1. Separate unit from heat
source.
k) Air Flow 1. Blockage inside
interior.
1. Remove blockage by
removing or redistributing
food product.
l) Warm Food 1. Warm food recently
placed in refrigerator.
1. Allow time for unit
to return to setpoint
temperature.
[6] Cabinet temperature
display indicator
does not illuminate
properly.
a) Power Supply 1. "OFF" position. 1. Move to "ON" position.
2. Loose connection(s). 2. Tighten or reconnect.
3. Failure or tripped
breaker.
3. Call electrician and/or
reset breaker.
b) Control Board 1. Defective. 1. Replace.
[7] Cabinet inside
temperature too low.
a) Setpoint and/or
Differential
1. Incorrect. 1. Correct setting(s).
See sections II.C.1 and
II.C.2 for defaults.
b) Frozen Food 1. Frozen food recently
placed in refrigerator.
1. Allow time for unit
to return to setpoint
temperature.
c) Thermistor 1. Shorted. 1. Check and replace.