Hoshizaki HWR68A(-D) Manuel D’Utilisation

Note: Fuse at position F101 on board is not currently used. The board can function 

without this fuse.

SW 135 
Display 
Setpoint

SW 134 
Raise 
Setpoint

SW 133 
Lower 
Setpoint

SW 131 
Energy 
Saving/
Service 
Button

SW 13 
Manual 
Defrost

LED 13 
Lit for 
Negative 
Values

LED 14 
Temperature 
and Alarm 
Display

(brown) Compressor Relay

 (red) Evaporator Fan Relay

 (orange) Defrost Heater Relay

K311 (6 pin)
Relay Wiring 
Harness 

K51 (5 pin)
(not used)

K101 (3 pin)
Transformer

K151 (10 pin)
Thermistor 
Wiring 
Harness 

K361 (9 pin)
(not used)

F101 
3 Amp Fuse
(not used)

Relays
(not used)

Chip Revision

Board Part 
Number

Board Part 
Number

(gray) Clogged Filter Sensor
(orange) Defrost Thermistor

(black) Cabinet Thermistor

(white) Jumper Wire (limits access to settings and    
 

 diagnostics menu - not present on all units)

(light blue) High Pressure Switch