Hoshizaki fh1-ssb Manual Suplementar
8
Problem
Possible Cause
Remedy
[4] Cabinet inside
temperature too
high;
compressor will
not start.
high;
compressor will
not start.
a) Thermistor
1. Defective.
1. Check and replace.
b) Compressor Relay
1. Defective. (LED 4 is ON.
115V to relay coil.)
1. Check and replace.
c) Circuit Board
1. Defective. (LED 4 is OFF.
Compressor relay coil not
energized at 115V.)
energized at 115V.)
1. Replace.
[5] Cabinet
temperature too
high.
high.
a) Setpoint
1. Incorrect.
1. Correct setpoint.
Factory defaults:
Freezer -3°F
Refrigerator 36°F
Freezer -3°F
Refrigerator 36°F
b) Door
1. Not sealing, or open for long
intervals.
1. Check for sealing, check for door
open at time of warm cabinet
temperature.
temperature.
c) Defrost
1. Not enough defrosts
occurring per day. Operation
in humid conditions.
in humid conditions.
1.
Freezer: See "D.1.b) Defrost
Frequency."
.
Refrigerator: See "D.1.b)
Defrost Frequency."
3. Check thermistor reading and
position.
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.
[6] Cabinet
temperature
display
indicator does
not illuminate
properly.
display
indicator does
not illuminate
properly.
a) Board Connection
1. Bad connection between
control board and display
board.
board.
1. Check connection.
b) Display Board
1. Defective.
1. Replace.
c) Control Board
1. Defective.
1. Replace.
[7] Cabinet inside
temperature too
low.
low.
a) Thermistor
1. Defective.
1. Check and replace.
b) Compressor Relay
1. Defective; contacts welded.
1. Replace.
c) Circuit Board
1. Defective.
1. Replace.
[8] Evaporator does
not defrost
completely.
completely.
a) Defrost Thermistor
1. Defective.
1. Check and replace.
b) Defrost
1. Not enough defrosts
occurring per day. Operation
in humid conditions.
in humid conditions.
1.
Freezer: See "D.1.b) Defrost
Frequency."
.
Refrigerator: See "D.1.b)
Defrost Frequency."
3. Check thermistor reading and
position.
c) Defrost Heaters
1. Defective. (E3 should be
displayed)
1.
Freezer: Replace heaters.
Reset E3 by pressing control
board "ALARM RESET."
board "ALARM RESET."
d) Safety Defrost
Thermostat
1. Defective, turning off heaters
prematurely, or fused open.
(E3 should be displayed)
(E3 should be displayed)
1.
Freezer: Replace safety defrost
thermostat.
Reset E3 by pressing control
board "ALARM RESET."
Reset E3 by pressing control
board "ALARM RESET."