Hoshizaki RTE-80SFA(-UK) Service Manual
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Hoshizaki RTE-80SFA(-UK) Service Manual

Hoshizaki RTE-80SFA(-UK) Service Manual

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See also: Instruction Manual
UNDERCOUNTER
REFRIGERATOR/FREEZER
MODEL
HOSHIZAKI
RTE-80SFA(-UK)
RTE-125SFA(-UK)
RTE-170SFA(-UK)
FTE-80SFA(-UK)
FTE-125SFA(-UK)
FTE-170SFA(-UK)
SERVICE MANUAL
NO.
E4AA-657
ISSUED:
JUN. 29, 2004
REVISED: AUG. 20, 2004

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Summary of Contents for Hoshizaki RTE-80SFA(-UK)

  • Page 1 E4AA-657 ISSUED: JUN. 29, 2004 REVISED: AUG. 20, 2004 HOSHIZAKI UNDERCOUNTER REFRIGERATOR/FREEZER RTE-80SFA(-UK) MODEL RTE-125SFA(-UK) RTE-170SFA(-UK) FTE-80SFA(-UK) FTE-125SFA(-UK) FTE-170SFA(-UK) SERVICE MANUAL...

  • Page 2: Table Of Contents

    CONTENTS PAGE I. GENERAL INFORMATION --------------------------------------------------------------------------- 1 1. SAFETY INSTRUCTIONS ------------------------------------------------------------------------- 1 2. CONSTRUCTION ----------------------------------------------------------------------------------- 3 3. MODEL NAME --------------------------------------------------------------------------------------- 4 4. SPECIFICATIONS ---------------------------------------------------------------------------------- 5 [a] RTE-80SFA(-UK) ------------------------------------------------------------------------------- 5 [b] RTE-125SFA(-UK) ------------------------------------------------------------------------------ 6 [c] RTE-170SFA(-UK) ------------------------------------------------------------------------------ 7 [d] FTE-80SFA(-UK) -------------------------------------------------------------------------------- 8 [e] FTE-125SFA(-UK) ------------------------------------------------------------------------------ 9 [f] FTE-170SFA(-UK) ----------------------------------------------------------------------------- 10 5.
  • Page 3 3. CONTROL BOX ------------------------------------------------------------------------------------ 34 4. FAN MOTORS -------------------------------------------------------------------------------------- 34 [a] CONDENSER FAN MOTOR ---------------------------------------------------------------- 34 [b] INTERIOR FAN MOTOR ---------------------------------------------------------------------- 34 5. THERMISTORS ------------------------------------------------------------------------------------- 35 [a] INTERIOR THERMISTOR -------------------------------------------------------------------- 35 [b] DEFROST THERMISTOR ------------------------------------------------------------------- 35 [c] CLOG THERMISTOR ------------------------------------------------------------------------- 35 6.

  • Page 4: 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 for the service person and a third party or the user due to improper service operations or defects in serviced products.
  • Page 5 (7) Before servicing, check the surface temperature of the refrigeration circuit to prevent a burn. 5. Keep the following in mind when making electrical connections: (1) Check for proper grounding connections, and repair if necessary to prevent electric shocks. (2) Always use service parts intended for the applicable model for replacement of defective parts.

  • Page 6: Construction

    2. CONSTRUCTION RTE-170SFA This refrigerator/freezer can be divided into the cabinet, refrigeration circuit, and electrical parts. 1) The cabinet can be further divided into the food storage/refrigeration, condensing unit and evaporator compartments. The interior of the food storage/refrigeration and evaporator compartments is made of stainless steel.

  • Page 7: Model Name

    2) The refrigeration circuit is composed of the compressor, condenser, drier, capillary tube and evaporator. These components are connected with copper tubes, welded to make them airtight, and charged with a specified amount of refrigerant R134a (refrigerator) or R404A (freezer). The evaporator is located inside the evaporator compartment, while the other components are located inside the condensing unit compartment.

  • Page 8: Specifications

    4. SPECIFICATIONS [a] RTE-80SFA(-UK) AC SUPPLY VOLTAGE * 1 Phase 230V 50Hz POWER SUPPLY CAPACITY * 0.52kVA (2.2A) AMPERAGE * 2.0A STARTING AMPERAGE * 8.2A ELECTRIC CONSUMPTION (RATED) * Motor: 310W Heater: 176W ELECTRIC CONSUMPTION (ACTUAL) Refrigeration: 321W Defrost: 165W POWER FACTOR * PULLDOWN TIME (10°C to 0°C) Approx.

  • Page 9: [B] Rte-125Sfa(-Uk)

    [b] RTE-125SFA(-UK) AC SUPPLY VOLTAGE * 1 Phase 230V 50Hz POWER SUPPLY CAPACITY * 0.52kVA (2.2A) AMPERAGE * 1.9A STARTING AMPERAGE * 8.2A ELECTRIC CONSUMPTION (RATED) * Motor: 290W Heater: 189W ELECTRIC CONSUMPTION (ACTUAL) Refrigeration: 314W Defrost: 174W POWER FACTOR * PULLDOWN TIME (10°C to 0°C) Approx.

  • Page 10: [C] Rte-170Sfa(-Uk)

    [c] RTE-170SFA(-UK) AC SUPPLY VOLTAGE * 1 Phase 230V 50Hz POWER SUPPLY CAPACITY * 0.52kVA (2.2A) AMPERAGE * 2.0A STARTING AMPERAGE * 8.2A ELECTRIC CONSUMPTION (RATED) * Motor: 305W Heater: 202W ELECTRIC CONSUMPTION (ACTUAL) Refrigeration: 342W Defrost: 182W POWER FACTOR * PULLDOWN TIME (10°C to 0°C) Approx.

  • Page 11: [D] Fte-80Sfa(-Uk)

    [d] FTE-80SFA(-UK) AC SUPPLY VOLTAGE * 1 Phase 230V 50Hz POWER SUPPLY CAPACITY * 0.93kVA (4.0A) AMPERAGE * 3.0A STARTING AMPERAGE * 14.8A ELECTRIC CONSUMPTION (RATED) * Motor: 355W Heater: 350W ELECTRIC CONSUMPTION (ACTUAL) Refrigeration: 375W Defrost: 330W POWER FACTOR * PULLDOWN TIME (-5°C to -15°C) Approx.

  • Page 12: [E] Fte-125Sfa(-Uk)

    [e] FTE-125SFA(-UK) AC SUPPLY VOLTAGE * 1 Phase 230V 50Hz POWER SUPPLY CAPACITY * 0.93kVA (4.0A) AMPERAGE * 3.0A STARTING AMPERAGE * 14.8A ELECTRIC CONSUMPTION (RATED) * Motor: 375W Heater: 373W ELECTRIC CONSUMPTION (ACTUAL) Refrigeration: 418W Defrost: 345W POWER FACTOR * PULLDOWN TIME (-5°C to -15°C) Approx.

  • Page 13: [F] Fte-170Sfa(-Uk)

    [f] FTE-170SFA(-UK) AC SUPPLY VOLTAGE * 1 Phase 230V 50Hz POWER SUPPLY CAPACITY * 0.93kVA (4.0A) AMPERAGE * 3.3A STARTING AMPERAGE * 14.8A ELECTRIC CONSUMPTION (RATED) * Motor: 430W Heater: 471W ELECTRIC CONSUMPTION (ACTUAL) Refrigeration: 495W Defrost: 435W POWER FACTOR * PULLDOWN TIME (-5°C to -15°C) Approx.

  • Page 14: Dimensions

    5. DIMENSIONS [a] RTE/FTE-80SFA(-UK)

  • Page 15: [B] Rte/Fte-125Sfa(-Uk)

    [b] RTE/FTE-125SFA(-UK)

  • Page 16: [C] Rte/Fte-170Sfa(-Uk)

    [c] RTE/FTE-170SFA(-UK)

  • Page 17: Technical Information

    II. TECHNICAL INFORMATION 1. WIRING DIAGRAM [a] RTE-80,125,170SFA...

  • Page 18: [B] Fte-80,125,170Sfa

    [b] FTE-80,125,170SFA...

  • Page 19: Refrigeration Circuit

    2. REFRIGERATION CIRCUIT Compressor Drier Evaporator Interior Fan Motor REFRIGERANT:HFC-R134a(RTE-*SFA) :HFC-R404A(FTE-*SFA)

  • Page 20: Sequence

    3. SEQUENCE [a] REFRIGERATOR Defrost Fan delay ends Thermistor senses Defrost starts Power ON Drain ends Display delay ends 3 min 5 min 5 min 1 min 6 hr “dF” on display Compressor Condenser Fan Motor Interior Fan Motor Defrost Heater Frame Heater 1.
  • Page 21 [b] FREEZER Defrost Compressor ON Fan delay ends Thermistor senses Defrost starts Display delay ends Power ON Drain ends 3 min 5 min 5 min 8 min 6 hr “dF” on display Compressor Condenser Fan Motor Interior Fan Motor Defrost Heater Frame Heater 1.

  • Page 22: Electronic Controls

    4. ELECTRONIC CONTROLS [a] SET POINT TEMPERATURE RTE series: -6 to -12°C FTE series: -25 to -7°C [b] CABINET TEMPERATURE DIFFERENTIAL 3.5 K Compressor OFF temperature = Set point temperature - 1.5 K ON temperature = Set point temperature + 2 K Note: On the Controller Board only.

  • Page 23: [G] Compressor Soft Start

    [g] COMPRESSOR SOFT START 1) Startup Power ON 3 min Compressor, Condenser Fan Motor Interior Fan Motor Cabinet Temp. Display When the power supply is turned on, the Interior Fan Motor starts up and the Temperature Display Window shows the cabinet temperature, but the Compressor and Condenser Fan Motor start up with a 3 minute delay.

  • Page 24: [I] Resolution

    [i] RESOLUTION 1/2 K (1 K for temperature setting and display) [j] CHECKING AND ADJUSTING SET POINT TEMPERATURE Press the Set Point Button to display the set point temperature on the Temperature Display Window. To change the set point temperature, hold the Set Point Button down and press the Temperature Control Button.

  • Page 25: Error Codes

    5. ERROR CODES In case of trouble, the Temperature Display Window will alternately flash every second between one of the following error codes and the cabinet temperature. The error codes are displayed in the following order of priority: Priority Code Error EEPROM Write Error EEPROM Verify Error...
  • Page 26 drops to 2°C below the set point. This function is available even during a defrost cycle. The “E1” display will automatically reset when the cabinet temperature drops to 2°C below the set point. The cause may be: 1) The Doors are opened too frequently or left open; 2) The Compressor is defective or gas is leaking;...
  • Page 27 The cause may be: 1) The ambient temperature is too low; or 2) The Interior Thermistor (black) is defective. Differential Power ON 4 K (deg) “E2” error resets (Set Point + 2°C) Set Point Temp. (Set Point - 2°C) Alert Temp. (Set Point - 5°C) Alert Timer...
  • Page 28 minutes. At the first detection, the Pressure Alert Timer will start counting down from 60 minutes. The Compressor will restart after the 5 minute interruption, if the Pressure Switch is off and the Clog Thermistor senses a temperature below 50°C. The Compressor will not restart until the above conditions are satisfied.
  • Page 29 Timer starts 2 min High “E7” error resets Clog Detection (58°C) Cabinet Temp. Temp. Display Flashing “E7” Window [h] Defrost Thermistor Defective (E8) When the Defrost Thermistor senses a temperature below -55°C (open circuit) or above 50°C for 10 minutes (short circuit), “E8” will be displayed. A short circuit will not be detected for 1 hour after the power supply is turned on.
  • Page 30 [i] Clog Thermistor Defective (E9) When the Clog Thermistor senses a temperature below -22°C (open circuit) or above 86°C for 10 minutes (short circuit), “E9” will be displayed. A short circuit will not be detected for 1 hour after the power supply is turned on. When the power supply is turned on with the Set Point Button pressed, a short circuit will be detectable immediately after startup.

  • Page 31: Intermittent Operation

    6. INTERMITTENT OPERATION While the cabinet temperature is rising in control operation, the Interior Fan Motor for cold air circulation and the Cord Heater provided in the front frame will operate intermittently. The control mode is factory-adjusted to the intermittent operation mode and changeable by the Rapid Button.
  • Page 32 The Interior Fan Motor ON/OFF time depends on the set point temperature. Set Point Temp. OFF Time ON Time RTE series -5 to -1°C 90 sec 15 sec 0 to 11°C 150 sec 15 sec FTE series -25 to -7°C 30 sec 30 sec To Start Rapid Refrigeration:...

  • Page 33: Heater Layout

    7. HEATER LAYOUT Anti-condensation Frame Heater Anti-condensation Mullion Heater Part # Model Part # Model 11.0W 3R6831-01 RTE-80 8.4W 4R2741-01 RTE-125,170 15.5W 3R6831-02 RTE-125 14.4W 4R2743-01 FTE-125,170 20.0W 3R6831-03 RTE-170 19.8W 3R6832-01 FTE-80 27.9W 3R6832-02 FTE-125 36.0W 3R6832-03 FTE-170...

  • Page 34: Removal And Replacement Of Components

    III. REMOVAL AND REPLACEMENT OF COMPONENTS WARNING Always unplug the refrigerator/freezer before replacing components. 1. REFRIGERATION UNIT 1) Remove the two pan head machine screws (stainless steel 4x8) at the top and bottom of the Front Panel. 2) Open and lift up the Front Panel to release it from the Hinges on the cabinet. 3) Disconnect the white two-pole and eight-pole connectors in the Control Box.

  • Page 35: Refrigeration Circuit

    2. REFRIGERATION CIRCUIT [a] REFRIGERANT The refrigerator is charged with refrigerant R134a, and the freezer with R404A. [b] COMPRESSOR 1) Pull out the Refrigeration Unit Base according to steps 1) through 5) of “1. REFRIGERATION UNIT”. 2) Take off the Terminal Cover enclosing the Compressor’s electrical parts. 3) Remove the Start Capacitor and Starting Relay.

  • Page 36: [D] Condenser

    8) Disconnect the Evaporator from the refrigeration circuit using brazing equipment. 9) Remove the eight truss head tapping screws (stainless steel 4x8) securing the Evaporator Covers. 10) To replace the removed parts, reverse the above removal procedure. Note: Prevent refrigerant leaks and corrosion at the welded parts. Defrost Thermistor Interior Fan Motor Evaporator...

  • Page 37: Control Box

    3. CONTROL BOX 1) Remove the two pan head machine screws (stainless steel 4x8) at the top and bottom of the Front Panel. 2) Open the Front Panel. 3) Remove the connectors under the Control Box and the Thermistor connectors. 4) Remove the Control Box by unscrewing the two truss head tapping screws (stainless steel 4x8).

  • Page 38: Thermistors

    (stainless steel 4x8) from the Evaporator Cover (sheet metal) where the Interior Fan Motor is mounted. 5) Remove the Interior Fan Motor by unscrewing the four truss head tapping screws (4x8). 6) To replace the removed parts, reverse the above removal procedure. 5.

  • Page 39: Door Gasket

    6. DOOR GASKET [a] REMOVAL 1) Open the Door. 2) Detach the Door Gasket from the Door Pack. [b] REPLACEMENT 1) Spray water on the Door Pack Channel with a sprayer. 2) Fit the four corners of the Door Gasket into those of the Door Pack Channel. 3) Push in each part of the Door Gasket from both sides.
  • Page 40 HOSHIZAKI EUROPE LTD. UNIT A, STAFFORD PARK 18, TELFORD, SHROPSHIRE TF3 3DJ ENGLAND PHONE: 01952-291777 HOSHIZAKI ELECTRIC CO., LTD. 3-16 MINAMIYAKATA, SAKAE, TOYOAKE, AICHI 470-1194 JAPAN PHONE: 0562-97-2111...

This manual is also suitable for:

Rte-125sfa(-uk)Rte-170sfa(-uk)Fte-80sfa(-uk)Fte-125sfa(-uk)Fte-170sfa(-uk)

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