Sub-Zero Wolf WWD30, Service Manual

Page 1: ...eral Information 2 Installation Information 3 Controls Operation 6 Component Access Removal 18 Troubleshooting Guide 25 Technical Data 29 Wiring Diagrams 30 subzero com 800 222 7820 WWD30 Service Manu...

Page 2: ...TRODUCTION This Wolf Warming Drawer Technical Service Manual WWD30 Part 807858 has been compiled to provide the most recent technical service information about the Wolf Warming Drawer including parts...

Page 3: ...he unit s initial installation All Warranty and Service information collected by Wolf Appliance Inc is arranged and stored under the unit serial number and or the customer s name It is requested to ha...

Page 4: ...ctrical supply Separate electrical circuit serving only this appliance A properly grounded 3 prong receptacle NOTE For outdoor applications the unit must be be connected to a properly grounded GFCI ci...

Page 5: ...ll Push the drawer back into the opening until the front flange is flush with the cabinet front Make sure the power cord does not get trapped under the warming drawer Open the warming drawer to its fu...

Page 6: ...rawer and oven openings may be required Check that oven supports do not obstruct the interior dimensions required for the warming drawer When the warming drawer is installed below a built in oven a mi...

Page 7: ...en the element relay Once the control sees a thermistor temperature of 5 F below setpoint the relay will close allowing element to cycle on Power Relay Board Circulation Fan Element Display Board Keyp...

Page 8: ...in off The PROOF is on anytime PROOF mode is being used The ON indicator is on anytime control is calling for heat The exception is during Sabbath mode where the ON indicator stays on constantly NOTE...

Page 9: ...3 4 NOTE If no other key is pressed within 20 seconds unit will turn off NORMAL WARMING MODE Normal warming mode is the basic operating mode when power is turned on and any warming function is select...

Page 10: ...first entering mode Once mode is active the TIMER will no longer be illuminated NOTE If no time is set timer will automatically default to 4 00 hours This ensures a definitive stop time Operations Whe...

Page 11: ...maintains drawer temperature to setpoint temperature Fan is on while element is on during warming mode as long as drawer switch returns a drawer closed value If element has cycled off fan will contin...

Page 12: ...increment is obtained then will increase by 5 seconds per 1 2 second If TIMER up or down arrow key is depressed for longer than 30 seconds display will increase by 30 minute increments each 1 2 secon...

Page 13: ...element turns off If after Sabbath mode is entered and a second keypress does not occur the unit will time out after 10 seconds and go into a unit OFF mode If drawer is opened fan and element will not...

Page 14: ...ade when unit is in OFF mode NOTE See Figure 3 20 for a quick reference to keystrokes to enter modes and features Temperature Display Preference Control can be switched between Fahrenheit or Celsius b...

Page 15: ...state at full illumination NOTE Left side of display will show On continuously and the right side of display will flash between bclt and Sab Continuous mode Off refers to backlight continuously off on...

Page 16: ...such as total hours used See Figure 3 17 3 19 NOTE Using the opposite TIMER up or down arrow key will reverse your previous order NOTE To clear error codes logged press and hold TIMER up and down arr...

Page 17: ...nd the door is closed Door switch closed when the keypad is being operated or unit turned on Drawer temperature rises to 250 F in any mode state Cable wires that activate element or fan relays on powe...

Page 18: ...closed Element on TEMP ELE Func OFF Relay Opens Element Off TEMP Fan Func ON Relay closed Fan turns on TEMP Fan Func OFF Relay Opens Fan turns Off TEMP Dor CLOS if Drawer Closed OPEn If Drawer Open K...

Page 19: ...NG A UNIT FROM ITS INSTALLATION SHOULD ONLY BE PERFORMED BY A TRAINED AUTHORIZED SERVICE TECHNICIAN OR INSTALLER TO AVOID ELECTRIC SHOCK POWER TO A VENTILATION UNIT MUST BE DISCONNECTED WHENEVER ACCES...

Page 20: ...d cavity baffle on the rear wall To remove the drawer assembly begin by opening the drawer fully Reach inside of unit cavity and disconnect control cable from power board on the right side of cavi ty...

Page 21: ...front panel Lift front drawer panel off the drawer mounting panel The drawer handle mounting screws are accessible from the inside face of the front panel Remove the drawer handle by extracting the mo...

Page 22: ...has flanges that rest upon the top sur face of the drawer frame From the bottom of the con trol panel screws pass through a bracket and fasten into the control panel securing the assembly to the draw...

Page 23: ...n by opening drawer Next using your fingers or small pliers compress spring clips and push through holes in flange See Figure 4 13 NOTE Drawer can be removed to make access easier Cavity Baffle Remova...

Page 24: ...d bracket running the width of the unit behind the drawer seals Only the hex head screws need to be removed to access the element After remov ing the hex head screws push the element bracket twards th...

Page 25: ...The thermal cutout is riveted into position You will need to drill out the rivets to remove NOTE Use stainless steel screws when installing new thermal cutout or rivets if available Power Cord NOTE E...

Page 26: ...All Settings 5 4 C No Heat at PROOF Setting only 5 4 D Excessive Heat at Any or All Settings 5 4 E Excessive Condensation in Drawer 5 4 F Food Dries Out 5 5 G One or more LCD ON OFF indicator Temp Ra...

Page 27: ...Field Service Mode view temper ature as viewed by thermistor Verify wiring ok to element Replace Thermistor if ok If unit outdoors and temperature below freezing point instruct on unit limitations Ve...

Page 28: ...no voltage present Check power to unit Plug unit in switch supply circuit breaker to ON position or replace fuse if defective Switch unit ON and set to desired temperature See Electronic Control Sect...

Page 29: ...foil Food in drawer longer then 4 hrs will tend to dry out Instruct Customer Timer default is 4 hrs Check power to unit Plug unit in switch supply circuit breaker to ON position or replace fuse if def...

Page 30: ...tic 850 Watts 16 9 10 Ohms NOTE For electronic control low voltage information see Wiring Schematic in this manual THERMAL CUT OUT TCO INFORMATION Auto Reset Open Temperature 213 8 F 37 4 F 101 C 3 C...

Page 31: ...THERMISTOR Blue White White Red DRAWER SWITCH COMMUNICATIONS CABLE FRONT CONTROL BOARD Black TCO ELEMENT FAN Black White Black White Black Black 3 CONDUCTOR POWER CORD REAR CONTROL BOARD FAN HTR L1 N...

Page 32: ...CONNECTOR THERMISTOR Blue White White Red DRAWER SWITCH COMMUNICATIONS CABLE FRONT CONTROL BOARD Black TCO ELEMENT FAN Black White Black White Red Black REAR CONTROL BOARD FAN HTR L1 N L2 DLB Gray P2...