Service Manual
Table Of Contents
- Important Safety Information
- I. Construction and Water/Refrigeration Circuit Diagram
- II. Sequence of Operation and Service Diagnosis
- III. Controls and Adjustments
- A. Control Board Layout
- B. LED Lights and Audible Alarm Safeties
- C. Settings and Adjustments
- 1. Default Dip Switch Settings
- 2. Harvest Time (S1 dip switch 1 & 2)
- 3. Pump-Out Time/Harvest Time During Pump-Out (S1 dip switch 3 & 4)
- 4. Pump-Out Frequency Control (S1 dip switch 5 & 6)
- 5. Harvest Pump Time Duration (Harvest Assist) (S1 dip switch 7 & 8)
- 6. Freeze Timer (S1 dip switch 9 & 10)
- 7. Pump-Out/Drain Selector (S2 dip switch 1)
- 8. Harvest Promotion Control (S2 dip switch 2)
- 9. Minimum Harvest Time (S2 dip switch 3)
- 10. Harvest Completion Detection Control (S2 dip switch 4)
- 11. Overfreeze Detection Control (S2 dip switch 5)
- 12. Slush Control (S2 dip switch 6)
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Preparing the Appliance for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
34
A. Control Board Layout
Control Board
Control Board
Part Number P01771-02
• "OUTPUT TEST" Button
(used to test relays on
control board)
• K6 Connector
Open
• K1 Connector
Pins
#1, 3 Float Switch
#2 Open
#4, 5 Bin Control
#6, 7 Thermistor
#8, 9 Open
• "ALARM RESET" Button
• S1 Dip Switch
• "POWER OK" LED
(Lights when power is
supplied to the board.
Flashes when bin
control is activated.)
• Relay LEDs (6)
(indicate which relays
are energized as
listed below)
• LED 5 (X1 Relay)
Compressor (Comp)
Fan Motor-Remote
(FMR)
• LED 4 (X6 Relay)
Drain Valve (DV)
• LED 8 (X4 Relay)
Inlet Water Valve (WV)
(WV1) on units with
2 inlet water valves
• K7 Connector
Transformer
• K3 Connector
Power Relay
• LED 7 (X3 Relay)
Pump Motor (PM)
• LED 6 (X2 Relay)
Hot Gas Valve (HGV)
Fan Motor (FM)
(FM off when LED on)
• LED 9 (X5 Relay)
Inlet Water Valve 2
(WV2) on units with
2 inlet water valves
• K5 Connector
Pins
#1 Fan Motor (FM)
#2 Hot Gas Valve
#3 Pump Motor
#4 Inlet Water Valve
#5 Open
#6 Drain Valve
• S2 Dip Switch
• Alarm Buzzer