SAFETY WARNING - HIGH VOLTAGE EQUIPMENT
Commercial ice machines operate with dangerous electrical voltages. If uncomfortable with electrical procedures, contact qualified technician immediately. Always count beep patterns before troubleshooting.
Hoshizaki Beep Codes & Reset Guide
Accurate diagnostic guide based on official Hoshizaki specifications. Always consult your specific model's service manual before attempting repairs.
🔊 Official Hoshizaki Beep Code System
Count beeps carefully - each pattern indicates specific problem
1 Beep - High Temperature Error
High temperature at evaporator outlet (thermistor on suction line)
- Hot water supply to unit
- Hot water migration from external sources
- Cooling system failure
2 Beeps - Long Harvest Cycle
Harvest cycle exceeded 20 minutes (unit shuts down after 2 consecutive occurrences)
- Ice not releasing from evaporator
- Sticking float switches
- Harvest assist mechanism issues
3 Beeps - Long Freeze Cycle
Unit exceeded backup freeze time protection (typically 60 minutes, twice consecutively)
- Sticking float switches
- Inlet water valve leaks
- Refrigeration problems
- Low water flow
6 Beeps - Low Voltage
Voltage dropped below 92 volts ± 5 percent
7 Beeps - High Voltage
Voltage exceeded 147 volts ± 5 percent
🔄 Official Reset Procedures
Two methods: Control board reset (preferred) or power cycle
Method 1: Control Board Reset (Preferred)
- 1 Locate main control board inside electrical compartment
- 2 Identify WHITE reset button (newer models) or BLACK reset button (older models)
- 3 CRITICAL: Ensure power is ON (reset only works with power on)
- 4 Using non-conductive tool, press and hold reset button for 2-3 seconds
- 5 Listen for normal startup sounds and verify operation
Best for: Clearing specific error codes, after component repairs
Note: Control board may be green, tan, or blue depending on model year
Method 2: Power Cycle Reset (Alternative)
- 1 Turn OFF machine using power switch
- 2 Unplug power cord from wall outlet
- 3 Wait minimum 5 minutes for complete system discharge
- 4 Plug power cord back in
- 5 Turn ON and monitor startup sequence
Best for: When reset button inaccessible, after power outages
Note: May not clear all error conditions requiring manual reset
📊 Technical Specifications & Requirements
Electrical Requirements
- ✓ Operating range: 97-142 volts ± 5%
- ⚠️ Low voltage alarm: <92 volts (6 beeps - auto reset)
- ⚠️ High voltage alarm: >147 volts (7 beeps - auto reset)
Water Supply Requirements
- 💧 Water pressure: 20-80 PSI (per manufacturer spec)
- 🌡️ Water temperature: 45-70°F optimal
- 🧪 TDS: <300 ppm recommended
Cycle Time Limits
- ⏰ Harvest cycle limit: 20 minutes (2 beep alarm)
- ⏱️ Freeze cycle limit: 60 minutes typical (3 beep alarm)
Houston Climate Considerations
Houston's high humidity and hard water accelerate scale buildup. Monitor water quality closely and implement preventive maintenance schedules. High ambient temperatures can trigger temperature-related alarms.
⚠️ Important Disclaimer
Reference Only: This guide is based on general Hoshizaki specifications. Always consult your specific model's official service manual before attempting repairs.
High Voltage Warning: Commercial ice machines operate with dangerous electrical voltages. If uncomfortable with electrical work, contact qualified technician immediately.
Warranty Protection: Unauthorized repairs may void manufacturer warranty. When in doubt, call professional service.
Accuracy Note: Error code meanings are based on official Hoshizaki documentation. Count beep patterns carefully for accurate diagnosis.
Professional Hoshizaki Service
Certified technicians trained on Hoshizaki diagnostic procedures and safety protocols