Control Board Layout - Hoshizaki DCM-300BAH Service Manual

A. Control Board Layout
1. Control Board Layout (Push Button)
Control Switch
#1 (W/BK) to #2 (W/BK)
"ICE"-Open-5VDC
"DRAIN"-Closed-0VDC
Compressor Relay
115VAC input (BR)
115VAC output (R)
• K1 Connector
#3 GM (P) or (DBU)
#2 115VAC Input (BR)
•
K2 Connector
Drain Valve
#10 (W/BU)
Control Transformer
Input #9 (W/R) or (R)
Inlet Water Valve
#8 (O) or (W/BR)
Control Transformer
Input #7 (W/R) or (R)
Dispense Water
Valve #6 (W/O)
24VAC Input
#5 (W/R) or (R)
Agitation GM
#4 (O) or (GY)
115VAC Input
#3 (BR) or (BK)
Ice Dispense
Solenoid #2 (P) or (DBU)
115VAC Input
#1 (BR) or (BK)
LED Legend:
COMP-compressor
FLUSH (DRAIN)-drain valve
GM-gear motor
ICE-ice dispense motor
WTRDP-water dispense valve
WTRIN-inlet water valve
High-Pressure Switch
#3 (Y) to #4 (Y)
Open-5VDC
Closed-0VDC
•
•
S1 Dip Switch
K4 Pin #1
(5VDC Circuit Terminal)
Control Board
Part Number 2A9093-01
Note: Control Board layout is the same for 2A4296-01, 2A8054-01, and 2A9093-01.
35
Compressor Control Relay Circuit
#5 (W/O) to #6 (W/O)
Relay De-Energized-Open-5VDC
Relay Energized-Closed-0VDC
•
K9 Connector
5VDC
"POWER OK" LED
•
"SERVICE" Button
(Ice Purge Cycle Bypass)
•
K8 Connector
(24VAC and 5VDC)
Control Transformer
24VAC Input #1 (W/R)
Control Transformer
24VAC Neutral #2 (LBU)
Bin Control
#3 (GY) Common
#4 (GY) Signal
Open-5VDC
Closed-0VDC
Float Switch Common
#5 (BK)
Upper Float Switch Signal
#6 (R)
Open-5VDC to #5 black
Closed-0VDC to #5 black
Lower Float Switch Signal
#7 (BU) or (DBU)
Open-5VDC to #5 black
Closed-0VDC to #5 black
•
K7 Connector
Ice Dispense Signal
#2 (Y)
Water/Ice Dispense Common
#3 (BR) or (W/BK)
Ice Dispense Signal (Portion)
#5 (DBU) or (R)
Water Dispense Signal
#8 (DBU) or (P)
•
K6 Connector
Open
Fig. 9a