Дополнительное Руководство для Hoshizaki fh1-ssb

Скачать
Страница из 63
7
III. Service Diagnosis
A. Diagnosis Chart
Problem
Possible Cause
Remedy
[1] Compressor will 
not start—no  
current draw.
a) Power Supply
 
1. "OFF" position.
1. Move to "ON" position.
. Loose connection.
. Tighten.
3. Failure.
3. Call electrician.
4. 08/30 volt; wrong leg to 
power control board.
4. Correct wiring.
b) Cord and Plug
1. Defective.
1. Replace.
c) Ground Fault Circuit 
Interrupter
1. Tripped.
1. Check and reset.
. Defective.
. Replace.
d) Transformer
1. Open coil winding.
1. Check continuity and replace.
e) Wiring to Control Board
1. Loose connection.
1. Tighten.
. Faulty.
. Check continuity and replace.
f) Voltage
1. Too low.
1. Call electrician.
. Too high.
. Call electrician.
3. 08/30 volt; wrong leg to 
power control board.
3. Correct wiring.
g) High Pressure Switch
1. Bad contacts.
1. Check continuity and replace.
. Has operated 5 or more times 
in one hour. (E4 should be 
displayed)
. Press "RESET" on control board. 
Determine why pressure switch 
is activated.
h) Thermistor
1. Defective.
1. Replace.
i) Control Board
1. Defective.
1. Replace control board.
j) Compressor Overload
1. Defective. (Contacts open)
1. Replace.
k) Compressor
1. Open windings.
1. Check continuity and replace.
l) Relay (Condensing Unit)
1. Bad contacts.
1. Replace.
. Open coil winding.
. Check and replace.
[] Compressor will 
not run—draws 
current and trips 
on overload.
a) Voltage
1. Too low.
1. Call electrician.
b) Start Relay
1. Bad contacts.
1. Replace.
. Open coil windings.
. Replace.
c) Compressor
1. Locked rotor.
1. Replace.
d) Start Capacitor
1. Defective.
1. Check and replace.
[3] Compressor runs 
intermittently 
and trips on 
overload.
a) Voltage
1. Too low.
1. Call electrician.
. Too high.
. Call electrician.
b) Condenser Filter
1. Clogged.
1. Clean filter.
c) Refrigerant Line or 
Component
1. Plugged or restricted.
1. Clean and replace drier.
d) Condenser Fan Motor
1. Failed
1. Replace.
e) Refrigerant
1. Overcharged.
1. Evacuate and recharge.
. Non-condensibles in system. . Evacuate and recharge.
f) Location of Unit
1. Restricted air flow to 
condenser.
1. Move unit or increase ventilation.
g) Boards not 
Communicating (Dual 
Temp units only)
1. Communication 
disconnected.
1. Restore communication.
. Wrong dip switch setting; #6 
off, either board.
. Turn #6 on.