Control Board Layout - Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 Service Manual

2. Control Board Layout

Display/Change
Rail Setpoint
Rail Temperature,
Alarm Display, and
Service Menu
LED on for
Negative Values
K341 Connector
# 1, 2 Rail Fan Relay (Orange)
K101 Connector
# 1, 3 Transformer 10V
Control Voltage (Dark Blue)
K151 Connector
# 1, 2 Condenser Thermistor
(Gray) (Clogged Filter
Thermistor)
# 3, 4 Defrost Thermistor (Orange)
(Cabinet) (DTh)
# 5, 6 Cabinet Thermistor (Black) (CTh)
# 7, 8 Service Jumper (White)
K201 Connector
# 1, 2 Rail Switch (Yellow)
# 3, 4 Defrost Thermistor
(Orange. Not used, but must be in
place)
# 5, 6 Rail Thermistor (Black) (RTh)
# 7, 8 Rail Switch (Pink)
Display/Change
Cabinet Setpoint
Front
Rear
16
"UP" Button
"DOWN" Button
Cabinet Temperature,
Alarm Display, and
Service Menu
Energy Saving Mode LED
(Not used this model)
"SERVICE USE ONLY" Button
"MANUAL DEFROST" button
Board Part Number
K311 Connector
# 1, 2 Comp Control
Relay (Brown)
# 3, 4 Cabinet Evaporator
Fan Relay (Red)
# 5, 6 Defrost Heater
Relay (Orange)
Chip Revision
Fuse 3A 125V
K361 Connector
# 1, 3 Rail Liquid Line
Solenoid Valve (RLLV)
# 1, 5 Cabinet Liquid Line
Solenoid Valve (CLLV)