Hoshizaki HRE-MA Series Service Manual
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Hoshizaki HRE-MA Series Service Manual

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REFRIGERATOR/FREEZER
MODEL
HOSHIZAKI
COMMERCIAL
HRE-MA series
HFE-MA series
HRFE-MA series
SERVICE MANUAL
NO.
R262-841
ISSUED:
MAY. 31, 2011
REVISED: APR. 30, 2014

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  • Page 1 R262-841 ISSUED: MAY. 31, 2011 REVISED: APR. 30, 2014 HOSHIZAKI COMMERCIAL REFRIGERATOR/FREEZER HRE-MA series MODEL HFE-MA series HRFE-MA series SERVICE MANUAL...

  • Page 2: Table Of Contents

    CONTENTS PAGE I. GENERAL INFORMATION --------------------------------------------------------------------------1 1. SAFETY INSTRUCTIONS -------------------------------------------------------------------------1 2. DIMENSIONS/SPECIFICATIONS ---------------------------------------------------------------3 [a] HRE-77MA-CHD ---------------------------------------------------------------------------------3 [b] HRE-127MA-CHD -------------------------------------------------------------------------------4 [c] HRE-147MA-CHD -------------------------------------------------------------------------------5 [d] HRE-187MA-CHD -------------------------------------------------------------------------------6 [e] HFE-77MA-CHD ---------------------------------------------------------------------------------7 [f] HFE-127MA-CHD --------------------------------------------------------------------------------8 [g] HFE-147MA-CHD -------------------------------------------------------------------------------9 [h] HFE-187MA-CHD ----------------------------------------------------------------------------- 10 [i] HRFE-77MA-CHD ------------------------------------------------------------------------------ 11 [j] HRFE-127MAF-CHD -------------------------------------------------------------------------- 12 [k] HRFE-147MAF-CHD-------------------------------------------------------------------------- 13 [l] HRFE-187MAF-CHD -------------------------------------------------------------------------- 14...
  • Page 3 [j] ERROR CODES -------------------------------------------------------------------------------- 32 4. TIMING CHART ------------------------------------------------------------------------------------ 33 [a] STARTUP - CONTROL ---------------------------------------------------------------------- 33 [b] DEFROST --------------------------------------------------------------------------------------- 34 5. CONTROLLER ------------------------------------------------------------------------------------- 35 [a] HRE SERIES, HRFE SERIES - REFRIGERATOR ----------------------------------- 35 [b] HFE SERIES, HRFE SERIES - FREEZER --------------------------------------------- 38 III.
  • Page 4 Explanation for Model Name * * * - * * * * * * - * * * Product Classification Door Type HRE: Refrigerator HD: Half door type HFE: Freezer LD: Long door type HRFE: Refrigerator/Freezer Power Supply Type C: Chinese Plug (220V±10% 50Hz) S: UK Plug (230V±10% 50Hz) T: Taiwanese Plug (220V±10% 60Hz) P: Philippine Plug (230V±10% 60Hz)

  • Page 5: General Information

    I. GENERAL INFORMATION 1. SAFETY INSTRUCTIONS The following instructions contain important safety precautions and should be strictly observed. The terms used here are defined as follows: WARNING: There is a possibility of death or serious injury to the service person and a third party or the user due to improper service operations or defects in serviced products.
  • Page 6 be located, be sure to check again for further leaks after recharging the refrigerant. Leaked refrigerant may produce a poisonous gas when coming in contact with an open flame of a gas cooking stove or a fan heater. (7) Before servicing, check the surface temperature of the refrigeration circuit to prevent a burn.

  • Page 7: Dimensions/Specifications

    2. DIMENSIONS/SPECIFICATIONS *Representative (standard) models only [a] HRE-77MA-CHD (Model Code: R262-C501)
  • Page 8 [b] HRE-127MA-CHD (Model Code: R263-C501)
  • Page 9 [c] HRE-147MA-CHD (Model Code: R264-C501)

  • Page 10: [D] Hre-187Ma-Chd

    [d] HRE-187MA-CHD (Model Code: R265-C501)

  • Page 11: [E] Hfe-77Ma-Chd

    [e] HFE-77MA-CHD (Model Code: R266-C501)

  • Page 12: [F] Hfe-127Ma-Chd

    [f] HFE-127MA-CHD (Model Code: R267-C501)

  • Page 13: [G] Hfe-147Ma-Chd

    [g] HFE-147MA-CHD (Model Code: R268-C501)

  • Page 14: [H] Hfe-187Ma-Chd

    [h] HFE-187MA-CHD (Model Code: R269-501)

  • Page 15: [I] Hrfe-77Ma-Chd

    [i] HRFE-77MA-CHD (Model Code: R281-C501)

  • Page 16: [J] Hrfe-127Maf-Chd

    [j] HRFE-127MAF-CHD (Model Code: R282-C501)

  • Page 17: [K] Hrfe-147Maf-Chd

    [k] HRFE-147MAF-CHD (Model Code: R283-C501)

  • Page 18: [L] Hrfe-187Maf-Chd

    [l] HRFE-187MAF-CHD (Model Code: R284-C501)

  • Page 19: [B] Hre-127Ma-Chd

    II. TECHNICAL INFORMATION 1. WIRING DIAGRAM *Standard models: model names and model codes for representative models only [a] HRE-77MA-CHD (Model Code: R262-C501) [b] HRE-127MA-CHD (Model Code: R263-C501) HRE-147MA-CHD (Model Code: R264-C501)

  • Page 20: [C] Hre-187Ma-Chd

    [c] HRE-187MA-CHD (Model Code: R265-C501) [d] HFE-77MA-CHD (Model Code: R266-C501)

  • Page 21: [E] Hfe-127Ma-Chd, Hfe-147Ma-Chd

    [e] HFE-127MA-CHD (Model Code: R267-C501) HFE-147MA-CHD (Model Code: R268-C501) [f] HFE-187MA-CHD (Model Code: R269-501)

  • Page 22: [G] Hrfe-77Ma-Chd

    [g] HRFE-77MA-CHD (Model Code: R281-C501)

  • Page 23: [H] Hrfe-127Maf-Chd, Hfe-147Maf-Chd

    [h] HRFE-127MAF-CHD (Model Code: R282-C501) HRFE-147MAF-CHD (Model Code: R283-C501)

  • Page 24: [I] Hrfe-187Maf-Chd

    [i] HRFE-187MAF-CHD (Model Code: R284-C501)

  • Page 25: Forced Drain Water Evaporation Models

    *Forced drain water evaporation models: model names and model codes for representative models only [j] HRE-77MA-CHD (Model Code: R262-C571)

  • Page 26: [K] Hre-127Ma-Chd, Hre-147Ma-Chd

    [k] HRE-127MA-CHD (Model Code: R263-C571) HRE-147MA-CHD (Model Code: R264-C571)

  • Page 27: [L] Hre-187Ma-Chd

    [l] HRE-187MA-CHD (Model Code: R265-C571)

  • Page 28: [M] Hfe-77Ma-Chd

    [m] HFE-77MA-CHD (Model Code: R266-C571)

  • Page 29: [N] Hfe-127Ma-Chd, Hfe-147Ma-Chd

    [n] HFE-127MA-CHD (Model Code: R267-C571) HFE-147MA-CHD (Model Code: R268-C571)

  • Page 30: [O] Hfe-187Ma-Chd

    [o] HFE-187MA-CHD (Model Code: R269-C571)

  • Page 31: Refrigeration Circuit

    2. REFRIGERATION CIRCUIT Compressor HRE/HFE Heat Exchange Evaporator Drier Compressor (Freezer) HRFE-77MA Heat Exchange Evaporator Drier Compressor (Refrigerator) Heat Exchange Evaporator Drier Refrigerant: HFC-134a (HRE series) (HRFE refrigerator) HFC-404A (HFE series) (HRFE freezer) There may be exceptions for some customized models.
  • Page 32 HRFE-127,147,187MAF Compressor (Refrigerator) Heat Exchange Evaporator Drier Compressor (Freezer) Heat Exchange Evaporator Drier...

  • Page 33: Electronic Controls

    3. ELECTRONIC CONTROLS [a] SET POINT TEMPERATURE (compressor OFF temperature) Off-cycle defrost (HRE series, HRFE series - refrigerator): -2 to +12°C Heater defrost (HFE series, HRFE series - freezer): -23 to -7°C Average Cabinet Temperature Time Set Point Temperature Compressor [b] CABINET TEMPERATURE DIFFERENTIAL 4 K (from “set point temp”...

  • Page 34: [F] Compressor Soft Start

    [f] COMPRESSOR SOFT START 1) Startup Power ON 3 min Compressor Condenser Fan Motor Cabinet Temp Display Interior Fan Motor (HRE, HRFE - refrigerator) 1 min Interior Fan Motor (HFE, HRFE - freezer) When the power supply is turned on, the screen shows the cabinet temperature and the interior fan motor starts up immediately (HRE series, HRFE series - refrigerator) or with a 1 minute delay (HFE series, HRFE series - freezer).

  • Page 35: [H] Checking Set Point Temperature

    [h] CHECKING SET POINT TEMPERATURE Note: See “5. CONTROLLER” for the operation panel key locations. HRE series, HRFE series - refrigerator Press and hold the up key on the operation panel to display the set point temperature on the screen. When releasing the up key, the screen displays the cabinet temperature again. HFE series, HRFE series - freezer Press and hold the set key on the operation panel for 3 seconds to display “SEt”...

  • Page 36: [I] Manual Defrost

    [i] MANUAL DEFROST To start the manual defrost cycle, press the defrost/rest key (HRE series, HRFE series - refrigerator) or defrost key (HFE series, HRFE series - freezer) for 3 seconds. The defrost indicator light on the operation panel comes on when the defrost cycle starts. [j] ERROR CODES HRE series, HRFE series - refrigerator Code...

  • Page 37: Timing Chart

    4. TIMING CHART [a] STARTUP - CONTROL HRE, HFE, HRFE series 3 min Min 3 min Power Supply Temp Display Frame Heater Compressor Condenser Fan Motor HRE series HRFE series - refrigerator Interior Fan Motor Interior Thermistor Temp Set Point Temp + 4 K Set Point Temp HFE series HRFE series - freezer...

  • Page 38: [B] Defrost

    [b] DEFROST HRE series, HRFE series - refrigerator (Off-cycle defrost) Frame Heater Compressor Condenser Fan Motor Interior Fan Motor Detects end of cycle (5°C) Defrost (Interior) Thermistor Temp Defrost (Until Thermistor detects) Temp Display Temp HFE series, HRFE series - freezer (Heater defrost) Frame Heater Compressor Condenser...

  • Page 39: Controller

    5. CONTROLLER [a] HRE SERIES, HRFE SERIES - REFRIGERATOR [1] Defrost Indicator Light [2] Refrigeration Indicator Light [3] Set Key [4] Defrost/Reset Key [5] Set Indicator Light [6] Screen [7] Down Key [8] Up Key Operation Panel Indicator Lights Indicator Light Symbol Status Meaning...
  • Page 40 Operations 1. Under temperature measuring and controlling status: 1) Press the set key for 3 seconds: When the keypad password is set as “0”, the set indicator light comes on and the screen displays the “F01” menu. There is no password authentication, so directly enter the menu mode to set parameter.
  • Page 41 When the cabinet sensor errors happen, the controller will flashing indicate the alarm code E1, with the buzzer doing nothing; close the compressor, when the troubleshooting is over, system will recalculate the compressor delay time. Defrosting stops automatically when the evaporator temperature reaches the defrost When the door-trip alarms, the controller will flashing indicate the alarm code termination temperature or when the defrost time runs out, or can be stopped manually.

  • Page 42: [B] Hfe Series, Hrfe Series - Freezer

    [b] HFE SERIES, HRFE SERIES - FREEZER [1] Fan Indicator Light [2] Set Indicator Light [3] Refrigeration Indicator Light [4] Defrost Indicator Light [5] Defrost Key [6] Down Key [7] Up Key [8] Set Key Operation Panel Indicator Lights Indicator Light Symbol Status Meaning...
  • Page 43 Parameters (Items with * are to be changed to administrator menu later.) Menu Item Range Default Remark Min temp setting to max temp setting Temp parameter setting 1 to 25°C Return difference setting *MdF 0 to 255 min Defrost time *IdF 0 to 120 hrs Defrost cycle...
  • Page 44 Operations 1. Compressor functions: A. Under electric heating defrost mode: Start condition: Compressor relay closes when both a) and b) or both a) and c) are met. a) Compressor delay time exceeds the set delay time. b) Forced refrigeration starts when the room temperature is higher than the set point temperature.
  • Page 45 3. Fan functions: Fan relay closes when any of the following conditions is met. a) Defrost temperature is higher than the fan stop temperature; Difference between room temperature and evaporator temperature is more than the set difference. b) Operation mode “0”; Compressor starts; Defrost thermistor temperature is lower than the fan stop temperature;...
  • Page 46 Wiring Diagram  Safety Rules Dangerous ★ ： 1、Strictly distinguish the sensor down-lead, power wire and output interface of the relay, and prohibit wrong connections or overloading the relay. 2、It must cut off the power supply before any connecting of the wire terminals. Warning ★...

  • Page 47: Service Diagnosis

    III. SERVICE DIAGNOSIS 1. ERROR CODES [a] HRE SERIES, HRFE SERIES - REFRIGERATOR Code Display Error Description Possible Cause Reset E1 E1 only Interior Interior thermistor • Interior thermistor • Press any key to thermistor is defective. circuit open, stop beep defective Compressor stops.

  • Page 48: Flowchart

    2. FLOWCHART [a] HRE SERIES, HRFE SERIES - REFRIGERATOR PROBLEM PROBLEM POSSIBLE CAUSE (numbers corresponding to "3. COMPONENTS") No refrigeration Compressor will not start No temp indication [1] Safety Breaker [2] Controller Open circuit, connector unplugged E1 error indication [4] Interior Thermistor Abnormal resistance, bad contact No error indication [4] Interior Thermistor...
  • Page 49 PROBLEM PROBLEM POSSIBLE CAUSE (numbers corresponding to "3. COMPONENTS") Condensation Frame heater is not energized Open circuit Frame heater is energized Duty ratio too high Water leak from rear Drain water is not evaporated Sheath heater is not energized [17] Cam Timer (HRE only) Open circuit, defective [16] Thermostat Contact...

  • Page 50: [B] Hfe Series, Hrfe Series - Freezer

    [b] HFE SERIES, HRFE SERIES - FREEZER PROBLEM PROBLEM POSSIBLE CAUSE (numbers corresponding to "3. COMPONENTS") No refrigeration Compressor will not start No temp indication [1] Safety Breaker [2] Controller Open circuit, connector unplugged No error indication [4] Interior Thermistor Abnormal resistance, bad contact [6] Pressure Switch Defective...

  • Page 51: Components

    PROBLEM PROBLEM POSSIBLE CAUSE (numbers corresponding to "3. COMPONENTS") Excessive Compressor runs continuously High temp indication [4] Interior Thermistor Location refrigeration Normal temp indication [4] Interior Thermistor Abnormal resistance [2] Controller Defective Compressor stops No error indication Cold air outlet loaded Cold air inlet blocked Ambient temp too low LLL, HHH error indication...
  • Page 52 CHART COMPONENT CHECK REMEDY Compressor Resistance between terminals Replace Compressor Winding resistance (Ω) Start AE2360Y 22.37 11.49 AEA2410Y 7.00 　　　21.29 AE2420ZK-SR 　 17.70 6.10 AE2432ZK 　　 8.56　　　　 3.26 AEA2413Y 4.20 　　　17.00 SC21CL 14.4 SC12CL 13.7 TL4G 18.2 15.1 FR8.5CL 12.0 AE1350Y-2 29.77 9.68...

  • Page 53: Controller

    4. CONTROLLER [a] SERVICING CONTROLLER 1) When receiving a service call, ask the user to turn off the power supply and turn it back on after 30 seconds, while watching the unit. This will reset the controller, and in some cases normal operation will resume.

  • Page 54: [B] Checking Thermistor

    [b] CHECKING THERMISTOR 1) Remove the thermistor from the controller. 2) Put ice and water in a glass or other container to make 0°C water. Immerse the thermistor bulb in the water for 5 minutes (at the center of the container). 3) Use the Ω...

  • Page 55: Removal And Replacement Of Components

    IV. REMOVAL AND REPLACEMENT OF COMPONENTS 1. CONTROLLER AND THERMISTOR [a] CONTROLLER 1) Unplug the unit. 2) Loosen the screw at the rear. 3) Remove the two screws at both sides to take off the control box cover. 4) Use a precision screwdriver to remove the wiring cover and wiring.
  • Page 56 3. If the defrost thermistor color is not white, wind white vinyl tape around the thermistor as shown below for indication. Vinyl Tape Sensor (White) Terminal Side Interior Thermistor Bulb Location Interior Thermistor Defrost Thermistor Bulb Location Defrost Thermistor HRFE-127,147,187MAF - refrigerator Bottom Fan Motor Side HRFE-77MA, 127,147,187MAF - freezer...
  • Page 57 HRFE-77MA - refrigerator Defrost Thermistor Interior Thermistor...

  • Page 58: Refrigeration Circuit

    2. REFRIGERATION CIRCUIT For HRFE-77MA, it is structurally difficult to replace the whole refrigeration circuit. Replace the individual parts. [a] COMPRESSOR 1) Unplug the unit. 2) Remove the front panel. 3) Remove the top panel. 4) Remove the protector cover enclosing the electrical parts. Remove the overload relay, starting relay, and other parts.

  • Page 59: [C] Evaporator

    [c] EVAPORATOR 1) Unplug the unit. 2) Remove the front panel. 3) Recover the refrigerant from the low side access valve. 4) Remove the insulation hoses on the refrigeration unit base. Disconnect the evaporator using brazing equipment. 5) Remove the air duct. 6) Disconnect the defrost heater wires.

  • Page 60: [E] Defrost Heater And Thermal Fuse

    [e] DEFROST HEATER AND THERMAL FUSE 1) Unplug the unit. Thermal Fuse Bracket 2) Disconnect the defrost heater at the back of the refrigeration unit. The defrost heater and thermal fuse are connected in Evaporator series and interchangeable without any operational problems.

  • Page 61: Air Duct

    3. AIR DUCT [a] AIR DUCT 1) Remove the screws securing the air duct. 2) Hold both sides of the air duct, and pull it out towards you. The air duct for the HFE series is provided with a gasket in the drain pipe and must be pulled hard to remove. 3) To prevent tension on the wires, place the removed air duct on a shelf.

  • Page 62: [B] Interior Fan Motor (Except Hrfe-77Ma)

    [b] INTERIOR FAN MOTOR (Except HRFE-77MA) 1) Unplug the unit. Fan Motor 2) Disconnect the interior fan motor connector beside the refrigeration unit. Air Duct 3) Unscrew the refrigeration unit. Insulation Tube 4) Slightly lift up the refrigeration unit, and put the interior fan motor leads inside the cabinet.

  • Page 63: [C] Interior Fan Motor (Hrfe-77Ma)

    [c] INTERIOR FAN MOTOR (HRFE-77MA) 1) Unplug the unit. 2) Open the door to the refrigerator. Unscrew and remove the cooling duct. 3) Unscrew and remove the interior fan motor assembly. 4) Remove the screws securing the interior fan motor to the bracket, and take off the interior fan motor.

  • Page 64: Door Parts

    4. DOOR PARTS [a] HINGE SPACER For door closing adjustment, the hinge spacers may be provided between the hinges and cabinet. When removed, the hinge spacers must be reinstalled in the correct position. When the door is replaced or the gasket is often caught in the door, order the following parts and replace the hinge spacers: Hinge Spacer 473352M01...

  • Page 65: Evaporation Tank

    5. EVAPORATION TANK (Forced drain water evaporation model only) 1) Unplug the unit. 2) Unscrew and remove the rear panel. 3) Unscrew the upper part of the evaporation tank cover, and lift off the cover. [a] DRAIN TANK HEATER 1) Unscrew and remove the drain tank duct. 2) Unscrew the drain tank flange securing the drain tank heater.

  • Page 66: Condenser Cleaning Pan

    6. CONDENSER CLEANING PAN The condenser is designed to allow the cleaning pan at the bottom. * Insert the cleaning pan (wastewater pan), and connect the drain hose to the drain outlet. Use the cleaning pan (A) for the 280 mm wide condenser [HRE / HRFE-77/127/147/187, HFE-77], and connect the cleaning pan (A) and cleaning pan (B) for the 500 mm wide condenser [HFE-127/147/187].

  • Page 67: Optional Parts

    7. OPTIONAL PARTS [a] HINGE KIT The door hinges for HRE-77MA, HFE-77MA and HRFE-77MA can be moved to the other side of the door by using the following hinge kit. Hinge Kit (R) Door Hinge (R) - Lo 375316G01 1 pc Door Hinge (R) - Up 375317G01 1 pc...

This manual is also suitable for:

Hfe-ma seriesHrfe-ma seriesHre-77ma-chdHre-127ma-chdHre-147ma-chdHre-187ma-chd ... Show all

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