Alarm Details and Countermeasures | Hoshizaki HWR40A(-D) manual

2. Alarm Details and Countermeasures

a. High Temperature Alarm (E1)

If the cabinet temperature exceeds the setpoint temperature by 14.4°F (8°C) or more for more than x hours, "E1" is displayed. The default value of x is "2" (2 hours). The value of x can be changed under F3 on the Settings and Diagnostics Menu. (0=No delay; 1=1; 2=2; 3=3 hours)

Note:

•After the machine has been turned off and then turned back on, the high temperature alarm feature is not active until the cabinet temperature reaches the lower setpoint temperature differential.

•The high temperature alarm feature operates even during defrost.

Reset Options

The alarm will automatically reset once the cabinet temperature reaches the lower setpoint temperature differential.

Possible Causes

•The door is opened frequently or is not completely closed.

•Trouble with the compressor or a gas leak.

•Trouble with the cabinet thermistor (black).

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Hoshizaki HWR40A(-D) Alarm Details and Countermeasures, High Temperature Alarm E1, Reset Options, Possible Causes

Contents

Superior Degree Reliability Energy Star Contents Page Undercounter Model Names Specifications Nameplate RatingsDimensions HUR40A, HUF40A Units mm 1a. HUR40A-D, HUF40A-D 2a. HWR40A-D, HWF40A-D HWR40A, HWF40A 3a. HUR68A-D, HUF68A-D HUR68A, HUF68A 4a. HWR68A-D, HWF68A-D HWR68A, HWF68A HUR96A Units mm 5a. HUR96A-D HWR96A Units mm 6a. HWR96A-D Evaporator Case II. General Information Construction Sequence of Operation Sequence of Operation and Timing ChartsRefrigerators Continuous Operating Mode Operating Timing Chart Freezers Continuous Operating Mode Freezers Continuous Defrost End Defrost thermistor reaches defrost Refrigerators Energy Saving Operating Mode Energy Board Self Check Minute Delay Freezers Energy Saving Operating Mode Freezers Energy Control Board Start-Up Delay Front Relay Wiring Harness K311Thermistor Wiring Harness K151 Rear Gaining Access to Settings and Diagnostics Settings and Diagnostics Adjusting the Setpoint Temperature Temperature DisplaySwitching the Display Between Fahrenheit and Celsius F5 Cabinet Temperature Correction calibration factor Later Section Settings and Diagnostics Menu Defrost Interval F0 Defrost Termination Temperature F1 Setpoint Temperature Differential F2 Low Temperature Alarm Delay Time F4 High Temperature Alarm Delay Time F3 Alarm History F6 Temperature Display Scale F5 Operating Modes Compressor Run Time F7 Energy Saving Perimeter Frame HeaterContinuous Alarm Signals Alarm Code Problem III. Service Diagnosis Alarm Codes Error Code Priority Description Alarm Display Priority Possible Causes Alarm Details and CountermeasuresHigh Temperature Alarm E1 Reset Options Low Temperature Alarm E2 High Pressure Alarm E4 Defrost Alarm E3 Clogged Filter Alarm E7 Defrost Temperature Sensor Malfunction Alarm E8 Clogged Filter Sensor Malfunction Alarm E9 Control Board Error Alarms EA and ED Problem Possible Cause Remedy Diagnosis Chart Problem Possible Cause Remedy Problem Possible Cause Remedy Thermistor Check Brazing IV. Removal and Replacement of ComponentsService for Refrigerant Lines Refrigerant Recovery Evacuation and Recharge Removal and Replacement of Compressor Removal and Replacement of Refrigeration Unit Removal and Replacement of Evaporator Page Page Clogged Filter Thermistor sensor Removal and Replacement of ThermistorsCabinet Thermistor Defrost Thermistor Removal and Replacement of Defrost Heater Removal and Replacement of Door Gasket Removal and Replacement of Control Board Evaporator Fan Motor Removal and Replacement of Fan MotorsDoor Re-Hinging and Drawer Conversion Condenser Fan Motor Cleaning Cleaning and Maintenance Instructions Drawers MaintenanceAir Filter Shelves 115/60/1 A2. HUR40A-D, HWR40A-D auxiliary code Q6 and later HUF40A-D, HWF40A-D C1. HUR68A, HWR68A auxiliary code Q5 and earlier C2. HUR68A-D, HWR68A-D auxiliary code Q6 and later HUF68A-D, HWF68A-D HUR96A-D, HWR96A-D