Service Manual
ManualsBrandsHoshizaki ManualsCommercial Countertop Ice Makers and DispensersDCM-751BAH 35" Stanitary Cubelet Ice Machine and Dispenser with 801 lbs. Daily Ice Production, Built-In 70 lbs. Ice Storage, Corrosion Resistant Stainless Steel Exterior, Advanced CleanCycle24 Design, and Push Button Operation: Stainless Steel
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. Settings 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 (S1 dip switch 8)
- 7. Factory Use (S1 Dip Switch 9 & 10)
- D. Power Switch, Control Switch, and Dispense Mode Switch
- IV. Removal and Replacement of Components
- V. Maintenance
- VI. Preparing the Appliance for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
30
No Ice Production - Possible Cause
Freeze Cycle
1. Control Board a) Defective.
2. Start Relay a) Defective.
3. Start Capacitor or Run Capacitor a) Defective.
4. Compressor a) External protector.
b) Motor winding.
c) Mechanical failure.
5. High-Pressure Switch Activates a) Dirty condenser.
b) Ambient temperature too warm.
c) Fan motor not operating.
d) Refrigerant overcharged.
e) Defective.
f) Refrigerant lines or components restricted.
6. Fan Motor a) Capacitor defective.
b) Motor winding.
c) Bearing worn out or locked rotor.
7. Evaporator a) Dirty.
b) Damaged or defective.
8. Thermostatic Expansion Valve
(TXV)
a) Bulb loose.
b) Operating erratically.
9. Refrigerant Charge a) Low.
10. Drain Valve a) Dirty, leaking by.
b) Defective coil.
c) Defective control board.
11. Water System a) Water leaks.
Re๎ll
1. Water Supply a) Off.
2. Control Board a) No power to ๎oat switch or not reading ๎oat switch condition.
b) No power to inlet water valve.
3. Float Switch a) Float does not move freely.
b) Defective.
4. Inlet Water Valve a) Clogged or defective.
Shutdown
1. Bin Control a) Actuator paddle sticking open.
b) Proximity switch defective.
2. Control Board a) Defective.