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Subzero WOLF CSO Service Manual

Convection steam oven
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Summary of Contents for Subzero WOLF CSO

  • Page 1: Table Of Contents

    800.222.7820 Convection Steam Oven Service Manual General Information Component Access & Removal Troubleshooting Guide Technical Data Wiring Diagrams...

  • Page 2: Convection Steam Oven

    CSO (SWS #13543126) General Information service.subzero.com GENERAL INFORMATION SERVICE MANUAL INTRODUCTION This technical service manual information assists with troubleshooting and diagnosing malfunctions, completion of repairs, and return of the product to proper operational condition. Read the complete instructions contained within CSO24TE/S before initiating any repairs.
  • Page 3 CSO (SWS #13543126) General Information service.subzero.com UNIT WARRANTY Product warranty is determined by the installation location and the date of installation. http://service.subzero.com/ ▪ View product warranties at ClaimsAndOrderProcessing/Pages/WarrantyInfo Warranties start on the day of product installation. ▪ Search for warranty and service information by serial ▪...

  • Page 4: Component Access & Removal

    CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com CAVITY COMPONENT REMOVAL AND INSTALLATION Remove the Door DOOR REMOVAL Open the door. Rotate the hinge retainer clip on each hinge forward until Remove the Door the hinge retainer clip stops.
  • Page 5 CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com Remove the door from the unit. DOOR FRONT OR INNER DOOR INSTALLATION Install the Door Front or Inner Door Place the upper and lower gaskets onto the inner door. Place the door front onto the inner door above the inner door bracket.
  • Page 6 CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com REMOVE THE DOOR HANDLE (continued) Remove the handle and handle standoffs from the door front. INTERMEDIATE DOOR GLASS REMOVAL To remove the intermediate door glass, first remove the door, then separate the door front and the inner door.
  • Page 7 CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com REMOVE THE DOOR FRONT OR THE INNER DOOR (continued) The door front and inner door are separated. Remove the Lift the bottom of the door front above the lower bracket of door front or the inner door.
  • Page 8 CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com Remove the Rack Guide RACK REMOVAL Remove the rack guide nut. Pull the front of the rack guide toward the center of the Remove the Rack oven. Pull the rack forward out of the unit.
  • Page 9 CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com Remove the food probe cover, nut, and food probe cover seal from the unit. Remove the Rack Pull the rack forward out of the unit. FOOD PROBE COVER INSTALLATION Remove the Rack Guide Remove the rack guide nut.
  • Page 10 CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com Remove the halogen light bulb. Remove the Rack Pull the rack forward out of the unit. HALOGEN LIGHT BULB INSTALLATION Remove the Rack Guide Install the Halogen Light Bulb Remove the rack guide nut.
  • Page 11 CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com Remove the rear baffle from the unit. Remove the Rack Pull the rack forward out of the unit. REAR BAFFLE INSTALLATION Remove the Rack Guide Install the Rear Baffle Remove the rack guide nut.
  • Page 12 CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com Remove the rear baffle from the unit. Remove the Rack Pull the rack forward out of the unit. Remove the Hot Air Fan Blade TIP: The hot air fan blade nut is reverse threaded.
  • Page 13 CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com INSTALL THE HOT AIR FAN BLADE (continued) Use a 10 mm socket to install the nut onto the hot air fan blade. Remove the Rack Guide Remove the rack guide nut.
  • Page 14 CSO (SWS #13543126) Cavity Component Removal and Installation service.subzero.com REMOVE THE ELEMENT (continued) Remove the element form the unit. ELEMENT INSTALLATION Install the Element Install the gasket seal onto the element. Connect the electrical wires to the element. Install the element through the back wall of the oven cavity.
  • Page 15 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com TOP COMPONENT REMOVAL AND INSTALLATION Remove the top plate from the unit. WATER TANK REMOVAL Remove the Water Tank Touch Water on the control panel. Remove the water tank from the unit.
  • Page 16 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE DOOR SWITCH (continued) Open the door switch bracket tab and remove the door Remove the water tank from the unit. switch from the door switch bracket. Remove the Top Plate...
  • Page 17 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE VALVE ASSEMBLY (continued) Remove the valve assembly from the unit. Remove the Top Plate Use a T-20 Torx bit to remove the screws from the top and back of the unit.
  • Page 18 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com Install the Top Plate Remove the Tank Housing Cover Place the top plate on the unit. Remove the wire guides from the tank housing cover. Use a T-20 Torx bit to install the screws into the top plate.
  • Page 19 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE TANK HOUSING BASE (continued) Remove the tank housing base from the unit. Install the Water Tank Assembly Install the water tank into the unit. Push the water tank closed.
  • Page 20 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE CONTROL BOARD (continued) Remove the control board from the unit. DISPLAY REMOVAL To remove the display, first remove the top plate and the control board. Remove the Top Plate Use a T-20 Torx bit to remove the screws from the top and back of the unit.
  • Page 21 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE CONTROL BOARD (continued) Remove the control board from the unit. Insert the ribbon cables into the ribbon cable connectors and lock the ribbon cable connector. Connect the electrical connectors to the control board.
  • Page 22 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE TOP PLATE (continued) Remove the top plate from the unit. Remove the valve assembly from the unit. Remove the Tank Housing Cover Remove the Tank Housing Base Remove the wire guides from the tank housing cover.
  • Page 23 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE CONTROL BOARD (continued) Disconnect the electrical connectors from the control board. Remove the control panel from the unit. Open the control board bracket tabs along the top of the control board.
  • Page 24 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com Install the Control Board Install the Top Plate Place the bottom of the control board into the control board Place the top plate on the unit. bracket supports. Use a T-20 Torx bit to install the screws into the top plate.
  • Page 25 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE ROOM AIR FAN (continued) Lift the room air fan up and remove it from the unit. Remove the top plate from the unit. Remove the Loudspeaker ROOM AIR FAN INSTALLATION Disconnect the loudspeaker electrical connector from the control board.
  • Page 26 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com INSTALL THE TOP PLATE (continued) Use a T-20 Torx bit to install the screws into the top plate. TEMPERATURE SENSOR 300C INSTALLATION TEMPERATURE SENSOR 300C REMOVAL Install the Temperature Sensor 300C...
  • Page 27 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE STEPPER MOTOR (continued) Remove the stepper motor from the unit. Remove the top plate from the unit. Remove the Loudspeaker STEPPER MOTOR INSTALLATION Disconnect the loudspeaker electrical connector from the control board.
  • Page 28 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE ROOM AIR FAN (continued) Lift the room air fan up and remove it from the unit. Remove the stepper motor from the unit. Remove the Temperature Sensor 300C Remove the Top Exhaust Duct...
  • Page 29 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com Install the Stepper Motor Remove the Top Plate Slide the stepper motor backward over the stepper motor Use a T-20 Torx bit to remove the screws from the top and retainer until the stepper motor tabs lock into place.
  • Page 30 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE ROOM AIR FAN (continued) Lift the room air fan up and remove it from the unit. Remove the stepper motor from the unit. Remove the Temperature Sensor 300C Remove the Top Exhaust Duct...
  • Page 31 CSO (SWS #13543126) Top Component Removal and Installation service.subzero.com REMOVE THE VALVE COUPLER ASSEMBLY (continued) Remove the stepping motor retainer. Install the Temperature Sensor 300C Turn the top exhaust duct over, and remove the slider from the valve coupler. Insert the temperature sensor 300C into the top exhaust duct.
  • Page 32 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com BACK COMPONENT REMOVAL AND INSTALLATION Use a T-20 Torx bit to install the screw into the temperature sensor. TEMPERATURE SENSOR REMOVAL Connect the temperature sensor electrical connector to the To remove the temperature sensor, first remove the top plate.
  • Page 33 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com REMOVE THE CSO RESISTOR (continued) Remove the CSO resistor from the unit. Remove the top plate from the unit. Remove the Thermostat 280C CSO RESISTOR INSTALLATION Disconnect the electrical connectors from the thermostat 280C.
  • Page 34 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com INSTALL THE TOP PLATE (continued) Use a T-20 Torx bit to install the screws into the top plate. POWER CORD INSTALLATION POWER CORD REMOVAL Install the Power Cord To remove the power cord, first remove the top plate.
  • Page 35 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com REMOVE THE UNIT RELAY BOARD (continued) Remove the unit relay board from the unit. Remove the top plate from the unit. Remove the Rack UNIT RELAY BOARD INSTALLATION Pull the rack forward out of the unit.
  • Page 36 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com Remove the convection fan motor from the unit. Remove the Rear Baffle Use a T-20 Torx bit to remove the screws from the rear baffle. Remove the rear baffle from the unit.
  • Page 37 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com Remove the drain pump assembly from the unit. Install the Rack Insert the rack between the rails of the rack guide. Push the rack into the oven. Install the Top Plate Place the top plate on the unit.
  • Page 38 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com REMOVE THE TOP PLATE (continued) Remove the top plate from the unit. Remove the drain pump retainer from the unit. Remove the Drain Pump Assembly DRAIN PUMP RETAINER INSTALLATION Disconnect the discharge hose to the water tank from the drain pump assembly.
  • Page 39 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com REMOVE THE TOP PLATE (continued) Remove the top plate from the unit. Insert the evaporator into the retaining tabs on the unit. Use a flat-blade screwdriver to pry out the tab over the evaporator.
  • Page 40 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com REMOVE THE EVAPORATOR (continued) Disconnect the electrical connector to the temperature Insert the level measure pin and pin tube into the sensor. evaporator. Use a flat-blade screwdriver to press in the tab above the Connect the electrical connector to the level measure pin.
  • Page 41 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com Remove the temperature sensor 100C and grommet from the unit. Remove the Evaporator Disconnect the hose that goes to the drain pump suction. Disconnect the condenser water nozzle from the evaporator.
  • Page 42 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com Remove the food probe cover, nut, and food probe cover seal from the unit. FOOD PROBE SOCKET REMOVAL WARNING Turn off the power to the product before starting this procedure. To remove the food probe socket, first remove the racks, right- hand rack guide, and food probe cover.
  • Page 43 CSO (SWS #13543126) Back Component Removal and Installation service.subzero.com Use diagonal pliers to cut across the front joints of the PTC heater cover. FOOD PROBE SOCKET INSTALLATION Install the Food Probe Socket Connect the electrical wires to the food probe socket.

  • Page 44: Troubleshooting Guide

    CSO (SWS #13543126) Troubleshooting service.subzero.com TROUBLESHOOTING TROUBLESHOOTING GUIDE Error Code Error Possible Cause Test/Action EEPROM read error Moisture on control 1. Inspect for steam leaks. board. 2. Replace the control board if error persists. EEPROM write error Moisture on control 1.
  • Page 45 CSO (SWS #13543126) Troubleshooting service.subzero.com Troubleshooting Guide Error Code Error Possible Cause Test/Action E15/A1 Maximum operating Depending on the Instruct customer on operating times: time exceeded temperature, the cooking mode is Cavity temperature < 212ºF: not cancelled. cancelled if the unit is Cavity temperature 212ºF - 302ºF: Cancelled in 48...
  • Page 46 CSO (SWS #13543126) Troubleshooting service.subzero.com Troubleshooting Guide Error Code Error Possible Cause Test/Action Excessively warm air 3. Replace the temperature sensor 300C. flowing over the 4. Replace the door gasket. temperature sensor 300C during self-clean from a bad door gasket.
  • Page 47 CSO (SWS #13543126) Troubleshooting service.subzero.com Troubleshooting Guide Error Code Error Possible Cause Test/Action temperature sensor 2. Replace the temperature sensor 100C. 100C 3. Replace the control board. E42/F2 Open circuit 1. Replace the temperature sensor 100C. evaporator temperature sensor 2. Replace the control board.
  • Page 48 CSO (SWS #13543126) Troubleshooting service.subzero.com Troubleshooting Guide Error Code Error Possible Cause Test/Action E51/F6 Relay calibration Replace the relay board. invalid E52/F10 Water tank leaking Water valve not tight. 1. Inspect the water valve. Defective or damaged 2. Inspect the water tank.
  • Page 49 CSO (SWS #13543126) Troubleshooting service.subzero.com Troubleshooting Guide Error Code Error Possible Cause Test/Action 2. Replace the relay board. E67/F16 Thermostat 280C or Most often a fan or 1. If E66 has occurred several times, update the thermostat 160C temperature sensing software to baseline 77 or higher.
  • Page 50 CSO (SWS #13543126) Troubleshooting service.subzero.com Troubleshooting Guide Error Code Error Possible Cause Test/Action Faulty level measure 4. Check for a short circuit to the drain pump or valve pin. evaporator. The evaporator is 5. Replace the level measure pin. heavily scaled.
  • Page 51 CSO (SWS #13543126) Troubleshooting service.subzero.com Troubleshooting Guide Error Code Error Possible Cause Test/Action 2. Replace the control board if the error continues. E100 Operating system: Moisture on relay 1. Inspect the relay board for moisture. ASSERT relay board board. 2. Replace the relay board if the error continues.
  • Page 52 CSO (SWS #13543126) Troubleshooting service.subzero.com Error Code Error Possible Cause Test/Action 2. Replace the relay board. E117/F29 Short circuit door lock 1. Check the wiring. motor 2. Replace the relay board. E118/F29 Open circuit door lock 1. Check the wiring.

  • Page 53: Technical Data

    CSO (SWS #13543126) Technical Data service.subzero.com TECHNICAL DATA CONVECTION STEAM OVEN TECHNICAL DATA TIP: All resistance measurements were performed with the part disconnected from the unit and the unit at room temperature. TIP: Resistance reading can vary ±10%. CONVECTION STEAM OVEN...

  • Page 54: Wiring Diagrams

    CSO (SWS #13543126) Wiring Diagrams service.subzero.com WIRING DIAGRAMS CSO WIRING DIAGRAM (SWS #13543126) 827703 REVA 02/2018...