Hoshizaki HR24B, Руководство по обслуживанию

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H. Diagnostic Chart
Before consulting the diagnostic charts, check the following:
• Check the cabinet temperature setpoint and factory default settings. For factory default
settings, see "II.B. Cabinet Temperature and Defrost" and "II.J. Service Menu."
• Make sure the doors are not left open or opened too often and that they are sealing
properly.
• Make sure product is not blocking airflow and that the cabinet is not overloaded with
warm or hot product. Product should be allowed to cool before putting in the appliance.
• Check for correct installation and proper voltage per appliance nameplate. This
appliance is approved for indoor or outdoor use. Normal operating ambient temperature
should be within 61°F to 95°F (16°C to 35°C).
• The appliance should not be located next to ovens, grills, or other high heat producing
equipment or exposed to direct sunlight.
• The appliance must have a minimum of 1" (3 cm) clearance at bottom and top. Air must
be able to circulate freely under, behind, and above the appliance.
• Check the control board using the steps in "II.F.3. Control Board Check."
1. Appliance Not Cooling
Appliance Not Cooling - Possible Cause
1.
Power Supply
a) Unplugged, off, blown fuse, or tripped or defective breaker.
b) Loose connection.
c) Not within specifications.
2. Cord and Plug
a) Loose connection.
b) Defective.
3.
Wiring
a) Loose connection or open.
b) Faulty.
4. Power Button (control board)
a) Turned "OFF."
b) Defective.
5.
Control Board and Display Module
See "II.J. Alarm Safeties."
and "II.F.3. Control Board Check."
a) In alarm.
b) Defective.
6. Door Switch
a) Door open.
b) Defective.
7.
Evaporator Fan Motor
a) Fan blade binding.
b) Defective.
8.
Compressor
a) Compressor external protector open or defective.
b) Motor winding open.
c) PTC relay contacts bad or coil winding open.
d) Inefficient.
9.
Condenser
a) Dirty.
10.
Evaporator
a) Dirty or frozen up.
11.
Refrigerant/Refrigerant Lines
a) Gas leak, low charge.
b) Refrigerant lines restricted.