Service Manual
Table Of Contents
- Important Safety Information
- I. Construction and Water/Refrigeration Circuit Diagrams
- II. Sequence of Operation and Service Diagnosis
- III. Controls and Adjustments
- A. Control Board Layout
- B. LED Lights and Audible Alarm Safeties
- C. Controls and Adjustments
- 1. Default Dip Switch Settings
- 2. Infrared Sensor Shutdown Delay (S1 dip switch 1, 2, 3)
- 3. Drain Frequency Control (S1 dip switch 4)
- 4. Continuous Dispensing Timer (S1 dip switch 5 & 6)
- 5. Bin Control Selector (S1 dip switch 7)
- 6. Bin Control Shutdown Delay, Agitation, and Ice Purge Timer (S1 dip switch 8)
- 7. Bin Control Shutdown Delay (S1 dip switch 9)
- 8. Factory Use (S1 Dip Switch 10)
- D. Switches
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Preparing the Appliance for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
35
• K1 Connector
#3 GM (P) or (DBU)
#2 115VAC Input (BR)
A. Control Board Layout
1. Control Board Layout (Push Button)
Control Transformer
Input #7 (W/R) or (R)
Drain Valve
#10 (W/BU)
• K6 Connector
Open
• "SERVICE" Button
(Ice Purge Cycle Bypass)
Control Transformer
24VAC Input #1 (W/R)
Compressor Control Relay Circuit
#5 (W/O) to #6 (W/O)
Relay De-Energized-Open-5VDC
Relay Energized-Closed-0VDC
High-Pressure Switch
#3 (Y) to #4 (Y)
Open-5VDC
Closed-0VDC
Control Switch
#1 (W/BK) to #2 (W/BK)
"ICE"-Open-5VDC
"DRAIN"-Closed-0VDC
Control Transformer
24VAC Neutral #2 (LBU)
Float Switch Common
#5 (BK)
• K9 Connector
• K7 Connector
• K2 Connector
Fig. 9a
Inlet Water Valve
#8 (O) or (W/BR)
Control Transformer
Input #9 (W/R) or (R)
5VDC
115 VAC
24VAC
5VDC
5VDC
115 VAC
24VAC
Ice Dispense Signal
#2 (Y)
Water/Ice Dispense Common
#3 (BR) or (W/BK)
Water Dispense Signal
#8 (DBU) or (P)
24VAC Input
#5 (W/R) or (R)
115VAC Input
#3 (BR) or (BK)
Agitation GM
#4 (O) or (GY)
115VAC Input
#1 (BR) or (BK)
Dispense Water
Valve #6 (W/O)
LED Legend:
COMP-compressor
FLUSH (DRAIN)-drain valve
GM-gear motor
ICE-ice dispense motor
WTRDP-water dispense valve
WTRIN-inlet water valve
DRAIN
Compressor Relay
115VAC input (BR)
115VAC output (R)
Bin Control
#3 (GY) Common
#4 (GY) Signal
Open-5VDC
Closed-0VDC
• "POWER OK" LED
• S1 Dip Switch
• K8 Connector
(24VAC and 5VDC)
Ice Dispense
Solenoid #2 (P) or (DBU)
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
2A9093-01
K4 Pin #1
(5VDC Circuit Terminal)
Ice Dispense Signal (Portion)
#5 (DBU) or (R)
Control Board
Part Number 2A9093-01
Note: Control Board layout is the same for 2A4296-01, 2A8054-01, and 2A9093-01.