Thermador C271 Service Manual Download Page 17

Page: 17 / 84

Display Head

The display head has a total of 8 pin headers (0nly 7 are used), they are
identified as P1, P2, P4, P6, P8, P10 and P11.

P1 pin header

has 18 pins and connects to the large touch control

board (P1).

P2 pin header

has 2 pins and connects to the meat probe.

P4 pin header

has 2 pins and connects to the lower oven air switch.

P6 pin header

has 2 pins and connects to the upper oven air

switch.

P8 pin header

has 2 pins and connects to the large touch control

board (P1).

P10 pin header

has 8 pins and connects to the relay board (yellow

harness to P10 on relay board).

P11 pin header

has 9 pins and connects to the relay board ( orange

harness to P11 on relay board).

Page 15

Summary of Contents for C271

Page 1: ...Service Manual for Thermador Built In Ovens Models C302 C272 C301 C271 92 02 025A Thermador Corp 1999 ...

Page 2: ...Temp Cutout 35 Removing the Blower Double Line Break Relay Lamp Transformer and Relay Board 37 Removing the Air Switches 39 Removing a Blower 41 Removing the Lamp Transformer and the Double Line Break Relay 43 Removing an Oven Door 44 Removing the Oven Door Gasket 45 Removing the Oven Door Components 46 Removing the C Oven Module 47 C Oven Current Flow Charts 54 Oven Mode Time Charts 55 Bake Mode ...

Page 3: ...do not service their own ovens due to the complexity and the risk of high voltage electrical shock Theinformationisorganizedtohelptheserviceeasilyfindwhatisneeded to repair the unit The C Oven is very similar to the S Oven The noticeable differences between the S and C Ovens are Aesthetic DAC Controls Single Relay Board Curved Control Panel Curved Door Glass Upper Oven Meat Probe in C Oven Hidden ...

Page 4: ...ooling Motor K5 Lower Oven Cooling Motor K6 Upper Oven Halogen TX K7 Lower Oven Halogen TX K8 Upper Oven Bake Element K9 Upper Oven Broil Element K10 Upper Oven Convection Element K11 Upper Oven Convection Motor K12 Lower Oven Bake Element K13 Lower Oven Broil Element K14 Lower Oven Convection Element K15 Lower Oven Convection Motor Page 2 ...

Page 5: ...ven cooling motors K6 Transfers current to complete 12 v a c Upper oven halogen light circuit K7 Transfers current to complete 12 v a c Lower oven halogen light circuit K8 Transfers 120 volts from 12 to upper oven bake element K9 Transfers 120 volts from 12 to upper oven broil element K10 Transfers 120 volts from 12 to upper oven convection element K11 Transfers 120 volts from 12 to upper oven con...

Page 6: ...lide onto the pin headers of the relay board display head and touch control boards The illustration above shows the pin headers on the relay board The wire harness is shown in the illustration above PIN Header PIN Header Connector Housing Wires Page 4 ...

Page 7: ... the connector housing is plugged there is no wire This harness sends commands between the left tcb and the right tcb 8 Wire Yellow Display Harness This 8 wire yellow harness connects from pin headerP10onthedisplayheadtopinheaderP10 on the relay board right rear corner of relay board This harness sends display signals from the relay board back to the display head 9 Wire Orange Communication Harnes...

Page 8: ...eader ano l is plugged on the harness so it cannot be miswired P5 Sends current to the lower oven latch switches It is a 5 pin header Only 1 2 3 and 5 are used 4 is missing on the pin header and is plugged on the harness to prevent miswiring P9 Sends current to the upper oven latch switches It is a 4 pin header All 4 pins are used P10 Sends current to p10 header on the display head It is an 8 pin ...

Page 9: ...oven latch motor P0 3 Blank P0 4 Sends 120VAC to lower oven latch motor P0 5 Blank P0 6 Not used P0 7 Not used P0 8 Blank P1 large pin header has 8 pins and are identified as follows P1 1 Receives current from center tap of halogen light transformer P1 2 Sends current to lower oven halogen lights P1 3 Receives current from center tap of halogen light transformer P1 4 Sends current to uper oven hal...

Page 10: ... P8 large pin header has 4 pins and are identified as follows P8 1 Current from L2 to K15 relay P8 2 Current to lower oven convection motor P8 3 Blank P8 4 Blank P18 large pin header has 6 pins and are identified as follows P18 1 Current from L1 to relay board transformer P18 2 Blank P18 3 Neutral from n to relay board transformer P18 4 Not used P18 5 Blank P18 6 Chassis ground Page 8 ...

Page 11: ... except self clean When set in self clean DOR will flash and self clean will erase P9 Upper oven door latch Willacceptallmodesexceptselfclean Whensetinselfclean dor will flash and self clean will erase P10 Sends display signals to display head Glass control panel is completely dead No display circuit Must be reset at breaker P11 Sends communication signals to display head Glasscontrolpaneliscomple...

Page 12: ...nd motors will not work P8 Lower oven convection motor No fail code The lower oven convection motor will not work The relay will snap closed P7 Upper oven convection motor No fail code The upper oven convection motor will not work The relay will snap closed P14 Upper oven double line break relay coil No fail code If double line break relay does not close l1 120 volts will not reach upper oven bake...

Page 13: ... C OVEN CONTROL PANEL Touch Control Glass Touch Control Boards Display Head Page 11 ...

Page 14: ...ement Touch Control Board and the Display Head are packaged in antistatic bags When removing the boards from their bags handle them as follows Touch Control Board Handle the Touch Control Board only by the edgesoftheglassandtheplasticframe DONOT TOUCH the connector pins or the microproces sor chips Display Head Handle the Display Head only by the edges of the plastic frame DO NOT TOUCH the connec ...

Page 15: ...re the same size The differencebetweena27 ovenanda30 ovenisdeterminedbythecontrol panel Mounting brackets Thereare6mountingbracketsthatholdtheglassagainstthecontrolpanel snug 2 of these brackets mount the display head to the back plate Back plate Thebackplateisusedtoputpressureagainsttheglassandholditinplace The back plate also serves to mount the display head Wire harnesses There are a total of 5...

Page 16: ...ly 20 are used 2 is missing and connects to the display head using 2 harness One harness has 18 wires one harness has 2 wires P2 pin header has 8 pins only 7 are used 2 is missing and connects to the small right side touch control board P3 pin header on the large left side touch control board is not used Right side touch control board Thesmalltouchcontrolboardisgluedontherightsideofthecurvedglass ...

Page 17: ... and connects to the meat probe P4 pinheaderhas2pinsandconnectstothelowerovenairswitch P6 pin header has 2 pins and connects to the upper oven air switch P8 pin header has 2 pins and connects to the large touch control board P1 P10 pin header has 8 pins and connects to the relay board yellow harness to P10 on relay board P11 pin header has 9 pins and connects to the relay board orange harness to P...

Page 18: ...ppear if upper oven air switch does not close If air switch does not close the mode is cancelled after about 45 sec onds P4 Lower oven air switch F64 will appear if lower oven air switch does not close If air switch does not close the mode is cancelled after about 45 sec onds P8 Power supply to touch control board No fail code time of day on clock control panel is dead no re action P1 Display comm...

Page 19: ... Serial Number Data Sticker Back Plenum Cover Front Plenum Cover NOTE The front plenum cover is mounted with 5 screws and the rear plenum cover with 6 screws The front plenum cover is not mounted the same on the 27 oven as on the 30 oven Page 17 ...

Page 20: ...ersonal property WARNING This symbol alerts you to such dangers as personal injury burns fire and electrical shock SYMBOLS YOU WILL SEE IN THE MANUAL THERMADOR ASSUMES NO RESPONSIBILITY FOR ANY REPAIRS MADE ON OUR PRODUCTS BY ANYONE OTHER THAN AUTHORIZED THERMADOR SERVICE TECHNICIANS WARNING Be sure to turn off all electrical supplies to the oven before servicing otherwise a fire may result causin...

Page 21: ... to appliances used in residential applications it does not cover their use in commercial situations This warranty is for products purchased and retained in the 50 states of the U S A the District of Columbia and Canada The warranty applies even if you should move during the warranty period Should the appliance be sold by the original purchaser during the warranty period the new owner continues to...

Page 22: ...ent Upper Oven Door Lower Bake Element Hidden on C Ovens Lower Oven Door Upper Halogen Lamp Lower Halogen Lamp Upper Lower Relay Boards Oven Stalled Fan Relays Upper Oven Light Switch Upper Halogen Lamp Meat Probe Jack Upper Oven Hi Temp Cutout Lower Oven Hi Temp Cutout Oven Door Latch Lower Oven Light Switch Lower Oven Convection Bake Element Fan Upper Oven Convection Bake Element Fan Lower Halog...

Page 23: ...oil element remove the string and mount the element to the liner with its mounting screws NOTE Do not al low the wires to bunch up inside the insulation material when pushing them into the liner holes 5 To remove the catalyst see Figure 4 a Remove the screws and pull it out of the oven cutout b Install the new catalyst 6 To remove the meat probe jack C Model Ovens Only see Figure 5 a From inside t...

Page 24: ...s Bracket Screws BACK OF LINER Broil Element 2 Top Front Mounting Screws Bracket Screws Bake Element Bracket Connectors Broil Element Brackets Access Panel Cover Hex Nut Meat Probe Jack Figure 3 Figure 2 Catalyst Figure 4 Figure 5 Page 22 ...

Page 25: ...s the flange at the bottom of the oven 6 Remove the six screws from the flange 7 Remove the two wires from the bake ele ment 8 Refer to Figure 8 and bend the bottom flange down as far as possible so that you can pull the bake element out from under the unit Refer to Figure 9 for the following steps 9 Remove the screws from the hidden ele ment cover and remove the cover 10 Remove the two screws fro...

Page 26: ...Flange Flange Remove 6 Screws Remove 3 Screws Support Bracket Bake Element Wires Wire Tie Figure 7 Figure 6 Bend Flange Down Bend Flange Down Flange Figure 8 Hidden Element Cover Hidden Bake Element Screw 1 of 4 Screw 1 of 2 Figure 9 Page 24 ...

Page 27: ...l CAUTION TECH TIP Be sure the oven temperature sensor connec tors are pushed back into the rear of the oven and out of the oven heat zone 3 Remove the racks from the oven 4 Remove the screws from the bracket and pull the oven temperature sensor forward until the wire connectors are through the opening 5 Cut the inline splices from the oven tem perature sensor and main harness wires 6 Connect the ...

Page 28: ...nt bracket and the screw from the bottom support and pull the element forward then disconnect the wires from the terminals 7 Install the new convection bake element and connect the wires to the terminals 8 Reassemble the oven WARNING Turn off the electrical power circuit to the oven at the main junction box before ser vicing this unit When you work on the oven be careful when handling the sheet me...

Page 29: ...to the oven at the main junction box before ser vicing this unit When you work on the oven be careful when handling the sheet metal parts There are sharp edges present and you can cut yourself if you are not careful CAUTION TECH TIP The convection blade hex nut has left rotat ing threads 7 Remove the flat washer and e ring from the convection blade and remove the blade from the motor shaft 8 Remov...

Page 30: ...n Motor White Wire 44 Fan Motor Screws Pan E Ring Flat Washer Hex Nut Left Rotating Thread Bracket with Insulation Convection Blade Brown Wire 45 Top Screw Top Screw Bottom Screws Convection Baffle Figure 12 Page 28 ...

Page 31: ...arts There are sharp edges present and you can cut yourself if you are not careful CAUTION 5 Pry the lamp holder out of the oven liner and cut the wires approximately 2 from the lamp holder body CAUTION Be careful not to chip or scratch the oven liner when you pry the lamp holder out of the cutout 6 Cut the plug off the new lamp holder 7 Connect the cut wires to the new lamp holder with two red in...

Page 32: ...Figure 13 Halogen Lamp Lamp Cover Lamp Holder Page 30 ...

Page 33: ...in see inset 1 7 Turn the latch 90 so that the sides align with the cutout in the latch catch see in set 2 8 Rotate the bottom of the control panel as sembly out and unhook the detent pins from the pivot bracket slots see inset 1 9 Unplug the orange and yellow 9 wire con nectors from the relay board at P10 and P11 10 Unplug connectors P2 and P6 from the display head WARNING Turn off the electrical...

Page 34: ...To P10 Screws Screws Machine Screws w Lockwashers SUPPORT BRACKET Detent Pin Clip Side of Burner Box Detent Pin Pivot Bracket Rotate Latch 90 To Remove Panel Latch Catch Stirrer Clutch Latch Catch Rotate Panel Up Rotate Panel Up Screw Inset 2 Inset 1 Page 32 ...

Page 35: ...ouch control boards are part of the glass and must be replaced with the glass 6 To remove the display head remove the four screws holding it to the control panel plate see Figure 16C 7 Reassemble the oven REASSEMBLY NOTE When you reinstall the control panel plate over the glass make sure that the top of the display bracket is hooked over the top edge of the glass to align it prop erly when the fou...

Page 36: ...Top Of Bracket Display Bracket Screw Screw Front Panel Rear View Control Panel Plate P8 P2 P2 P1 P1 P3 P6 P10 P11 Control Panel Glass Control Panel Display Head Right Touch Control Board Left Touch Control Board Control Panel Plate Control Panel Plate Control Panel Plate Figure 16A Figure 16B Figure 16C Figure 16D Page 34 ...

Page 37: ...et b Pull the latch assembly to the right so that the flange on the left side clears the bracket and then pull it forward as far as the wires will allow c Remove the wires from the switch con nectors and the motor wires from the main harness d To replace a door lock or door unlock switch on the latch assembly remove the two screws from the switch body and remove the switch 7 To remove the hi temp ...

Page 38: ...er Oven Wht 05 Lower Oven Motor 57 58 Upper Oven Motor 07 08 Com Com N O N O Lock Switch Unlock Switch COOK TIME TIMER 2 TIMER 1 CLOCK STOP TIME UPPER OVEN LOWER OVEN BAKE OFF BROIL CONVECTION CONVECTION ROAST SELF CLEAN OVEN LIGHT BAKE OFF BROIL CONVECTION CONVECTION ROAST SELF CLEAN 1 2 3 4 5 6 7 8 9 0 SCREWS OVEN DOOR LATCH SCREWS UPPER AIR VENT GRILLE AIR VENT GRILLE AIR VENT GRILLE SCREWS Hex...

Page 39: ...al power circuit to the oven at the main junction box before ser vicing this unit When you work on the oven be careful when handling the sheet metal parts There are sharp edges present and you can cut yourself if you are not careful CAUTION 5 To remove the oven stalled fan relay see the inset a Remove the screws and disconnect the wires from the terminals b Install the new oven stalled fan relay w...

Page 40: ... 11 Pink 35 Blue 23 P19 Red 17 Red 91 Brown 25 Orange 29 Black 34 Ground Lug Yellow 09 White 19 White 32 Red 17 Red 18 Red 31 Red 14 Red 91 Black 11 Black 33 White 26 White 12 White 24 White 08 Black 30 Yellow 10 2 Yellow Red 16 Red 15 16 Red 14 15 Yellow 27 Blue 28 Yellow 36 Pink 35 White 19 Yellow 38 Mounting Screw 1 of 6 TERMINAL BLOCK STALLED FAN RELAY LAMP TRANSFORMER RELAY BOARD PLATFORM SUP...

Page 41: ...xt page for the fol lowing steps 1 Turn off the electrical power to the oven 2 Open the lower oven door The bottom trim mounting screws see inset 1 are vis ible at each side of the oven door below the left and right hinges 3 Remove the two screws from the bottom trim pull it forward and remove it 4 Remove the two front switches from the air switch bracket and flange and pull the air switch bracket...

Page 42: ...w Bottom Trim Screw Mounting Screws AIR SWITCH Mounting Screws Bracket Bottom Trim Mounting Screws Air Switch Bracket Upper Oven Air Switch Lower Oven Air Switch Flange Inset 1 Inset 2 Inset 3 Figure 25 Page 40 ...

Page 43: ...o remove the lower blower see Figure 27 a Remove the oven from the wall b Remove the rear panel from the oven c Remove the four bracket screws 1 2 6 7 from the back of the oven d Remove the three blower screws 3 4 5 from the bracket and remove the motor e Loosen the wire ties and remove the two motor wires from the rest of the wire harness f Install the new blower in the mount ing bracket mount th...

Page 44: ...Dk Blue 23 Upper Blower Mounting Bracket Screw Screw Screw BACK OF PLENUM Blower Wire 24 To Upper Blower Motor Blower Bracket Blower Wire 23 To Upper Blower Motor 1 2 3 4 5 6 7 Upper Blower Lower Blower Figure 27 Figure 26 Page 42 ...

Page 45: ...f the electrical power circuit to the oven at the main junction box before ser vicing this unit When you work on the oven be careful when handling the sheet metal parts There are sharp edges present and you can cut yourself if you are not careful CAUTION 6 To remove an oven stalled fan relay see Figure 29 a Remove the screws and disconnect the wires from the relay terminals b Install the new oven ...

Page 46: ...move Door Position Down To Close Door 3 To remove the door a Grasp the door by the sides toward the back and raise the front of the door sev eral inches there will be some resis tance in the spring mechanism because the hinge is locked b When the door is high enough lift it until the hinges clear the indents and pull it out of the slots in the front frame Hinge Latch Figure 30 Page 44 ...

Page 47: ... Using the eraser end of a pencil push the ends of the gasket fully into the holes in the oven door 7 Check the entire gasket to make sure that all of the clips are properly inserted and that it is flush and even with the surface of the door 8 Close the oven door and check to make sure that the gasket fits firmly and evenly with the front of the oven When you work on the oven be careful when handl...

Page 48: ...mponents The illustration shows the order of removal When you work on the oven be careful when handling the sheet metal parts There are sharp edges present and you can cut yourself if you are not careful CAUTION Figure 33 Gasket Door Liner Inner Glass 2 W Spacer Insulation Cover Door Baffle Top Door Trim End Cap Glass Support Bracket Spacer Hinge Door Glass W Curved Panel Handle Page 46 ...

Page 49: ...rom the oven shown in Figure 35 Refer to the sections in this manual for the procedures on re moving the components 5 With all of the oven components removed remove the six screws three on each side from the front sides of the oven can 6 Pull the oven can forward and remove it C Oven Module Kit Oven Can Screws 3 on each side Convection Mtg Bracket Cover Thermal Sensor Catalyst Halogen Lamp Reflect...

Page 50: ...when it is activated 5 If the readings are not correct remove and replace the switch WARNING Motor Terminals BLOWER ASSEMBLY TO AVOID ELECTRICAL SHOCK DISCONNECT THE POWER TO THE APPLIANCE BEFORE SERVICING FOR THOSE CHECKS REQUIRING THE USE OF ELECTRICAL POWER EXERCISE EXTREME CARE DO NOT PERFORM HIGH VOLTAGE TESTS THE BLOWER MOTOR Refer to page 2 26 to access the blower motor 1 With no power appl...

Page 51: ...als The meter should indicate 2 Ω 5 If the readings are not correct remove and replace the lamp transformer Primary Winding Secondary Winding 10 6 1 5 THE CONVECTION FAN MOTOR Refer to page 2 8 to access the convection fan motor 1 With no power applied disconnect the motor wire connectors from their terminals 2 Set the ohmmeter to the R x 1 scale 3 Touch the ohmmeter leads to the motor termi nals ...

Page 52: ... the switch in its normal position and continuity when it is activated 5 If the reading is not correct remove and replace OVEN DOOR LATCH Motor Terminals Com Com N O N O Lock Switch Unlock Switch Latch Position Lock Switch Unlock Switch Unlatched Yes No Latched No Yes the switch To test the door latch motor windings 1 With no power applied disconnect the motor wiresfromtheterminalblockandmainharne...

Page 53: ...ld indicate 15 Ω 4 If the reading is not correct remove and replace the broil element THE HIDDEN BAKE ELEMENT C MODELS ONLY Refer to page 2 4 to access the bake element 1 With no power applied remove the wires from the terminals of the hidden bake element 2 Set the ohmmeter to the R x 1 scale 3 Touch the ohmmeter leads to the bake element terminals The meter should indicate 24 Ω 4 If the reading i...

Page 54: ...ter should indicate continuity 4 If the reading is not correct remove and replace the hi temp cutout Terminals Hi Temp Cutout Reset Button THE CONVECTION BAKE ELEMENT Refer to page 2 7 to access the convection bake element 1 With no power applied remove the wires from the terminals of the convection bake element 2 Set the ohmmeter to the R x 1 scale 3 Touch the ohmmeter leads to the convection bak...

Page 55: ...re while cleaning F33 Upper oven over temperature while cooking F34 Upper oven cooling fan not operating F40 Upper meat probe shorted F50 Upper door signal shorted low F51 Upper door stuck locked F52 Upper oven door position error locked and open F53 Upper door stuck locked F54 Upper latch input shorted F60 Lower oven sensor shorted F61 Lower oven sensor open F62 Lower oven over temperature while ...

Page 56: ... C OVEN Current Flow Charts Page 54 ...

Page 57: ...l Preheat 0 60 0 Broil Mode 0 50 0 Convection Preheat 0 0 60 Convection Mode 0 0 60 Dehydrate Preheat 0 0 30 Dehydrate Mode 0 0 30 Convection Bake Preheat 35 25 0 Convection Bake Mode 56 4 0 Convection Roast Preheat 0 30 30 Convection Roast Mode 30 0 30 Convection Broil Preheat 0 60 0 Convection Broil Mode 0 60 0 CL Preheat 240 Volts 45 37 0 CL Mode 240 Volts 45 37 0 CL Preheat 208 Volts 60 60 0 C...

Page 58: ...tes DLB Relay Coil DLB Relay Contacts Close 120 Volts from L1 Flow to Bake Broil Elements NO K8 Relay Closes K9 Relay Closes 120 Volts from L2 Flow to Bake Element 120 Volts from L2 Flow to Broil Element Relays K 8 and K 9 will alternately open and close PRESS START Incomplete Circuit Flashes F34 or F64 and shuts unit off OR Page 56 ...

Page 59: ... F34 error code for the upper oven and an F64 error code for the lower oven 3 Pin header P14 on the relay board sends 24 VDC to the double line break relay DLB coil when the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection elements 4 Bake relay K8 and broil relay K9 alternately open and close and send current from L2 to the other leg of the...

Page 60: ...ay an F34 error code for the upper oven and an F64 error code for the lower oven 3 Pin header P14 on the relay board sends 24 VDC to the double line break relay DLB coil when the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection elements 4 Bake relay K8 and broil relay K9 alternately open and close and send current from L2 to the other leg o...

Page 61: ...tes DLB Relay Coil DLB Relay Contacts Close 120 Volts from L1 Flow to Bake Broil Elements NO K8 Relay Closes K9 Relay Closes 120 Volts from L2 Flow to Bake Element 120 Volts from L2 Flow to Broil Element Relays K 8 and K 9 will alternately open and close PRESS START Incomplete Circuit Flashes F34 or F64 and shuts unit off OR Page 59 ...

Page 62: ...lay an F34 error code for the upper oven and an F64 error code for the lower oven 3 Pin header P14 on the relay board sends 24 VDC To the double line break relay DLB coil when the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection elements 4 Bake relay K8 and broil relay K9 alternately open and close and send current from l2 to the other leg ...

Page 63: ...vates DLB Relay Coil DLB Relay Contacts Close 120 Volts from L1 Flow to Bake Broil Element NO K8 Relay Closes K9 Relay Closes 120 Volts from L2 Flow to Bake Element 120 Volts from L2 Flow to Broil Element Relays K 8 and K 9 will alternately open and close PRESS START Incomplete Circuit Flashes F34 or F64 and shuts unit off Page 61 ...

Page 64: ...isplay an F34 error code for the upper oven and an F64 error code for the lower oven 3 Pin header P14 on the relay board sends VDC to the double line break relay DLB coil when the coil is energized the DLB contacts close current flows from L1 to one leg of the bake broil and convection elements 4 Bake relay K8 and broil relay K9 alternately open and close and send current from L2 to the other leg ...

Page 65: ... For the upper oven and an F64 error code for the lower oven 3 Pin Header P14 on the relay board sends 24 VDC to the double line break relay DLB coil When the coil is energized the DLB contacts close current flows from L1 to one leg of the bake broil and convection elements 4 Bake relay K8 and broil relay K9 alternately open and close and send current from L2 to the other leg of the bake and broil...

Page 66: ...r Switch Closes Completed Circuit Signals Board P14 Activates DLB Relay Coil DLB Relay Contacts Close 120 Volts from L1 Flow to Broil Element NO K9 Relay Closes 120 Volts from L2 Flow to Broil Element PRESS START Incomplete Circuit Flashes F34 or F64 and shuts unit off Page 64 ...

Page 67: ...oard will interpret an cooling fan fault and display an F34 error code for the upper oven and an F64 error code for the lower oven 3 Pin header P14 on the relay board sends 24 VDC to the double line break relay DLB coil when the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection element 4 Broil relay K9 closes and send current from L2 to the ...

Page 68: ...ed Circuit Signals Board P14 Activates DLB Relay Coil DLB Relay Contacts Close 120 Volts from L1 Flow to Convection Element NO K10 Relay Closes K11 Relay Closes 120 Volts from L2 Flow to Convection Element Convection Motor Runs PRESS START Incomplete Circuit Flashes F34 or F64 and shuts unit off Page 66 ...

Page 69: ... the upper oven and an F64 error code for the lower oven 3 K11 relay closes and activates the convection motor Note the convection motor will stop when the oven door is opened during any convection mode 4 Pin header P14 on the relay board sends 24 VDC to the double line break relay DLB coil When the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and con...

Page 70: ...itch Closes Completed Circuit Signals Board P14 Activates DLB Relay Coil DLB Relay Contacts Close 120 Volts from L1 Flow to Convection Element NO K10 Relay Closes 120 Volts from L2 Flow to Convection Element PRESS START Incomplete Circuit Flashes F34 or F64 and shuts unit off Page 68 ...

Page 71: ...l interpret a cooling fan fault and display an F34 error code for the upper oven and an F64 error code for the lower oven 3 Pin header P14 on the relay board sends 24 VDC To the double line break relay DLB coil When the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection elements 4 Convection relay K10 closes and sends current from L2 to the o...

Page 72: ...oil DLB Relay Contacts Close 120 Volts from L1 Flow to Bake Convection Elements NO K8 Relay Closes K9 Relay Closes 120 Volts from L2 Flow to Bake Element 120 Volts from L2 Flow to Broil Element Relays K 8 and K 9 will alternately open and close PRESS START Incomplete Circuit Flashes F34 or F64 and shuts unit off K11 Relay Closes Convection Motor Runs Page 70 ...

Page 73: ... for the lower oven 3 K11relayclosesandactivatestheconvectionmotor Note Theconvection motor will stop when the oven door is opened during any convection mode 4 Pin header P14 on the relay board sends 24 VDC to the double line break relay DLB coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection elements 5 Bake relay K8 and broil relay K9 alterna...

Page 74: ...lower oven 3 K11relayclosesandactivatestheconvectionmotor Note Theconvection motor will stop when the oven door is opened during any convection mode 4 Pin header P14 on the relay board sends 24 VDC to the double line break relay DLB coil When the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection elements 5 Bake relay K8 and broil relay K9 al...

Page 75: ... DLB Relay Contacts Close 120 Volts from L1 Flow to Bake Convection Elements NO K8 Relay Closes K10 Relay Closes 120 Volts from L2 Flow to Bake Element 120 Volts from L2 Flow to Convection Element Relays K 8 and K 10 will alternately open and close PRESS START Incomplete Circuit Flashes F34 or F64 and shuts unit off K11 Relay Closes Convection Motor Runs Page 73 ...

Page 76: ... 3 K11 relay closes and activates the convection motor Note the convection motor will stop when the oven door is opened during any convection mode 4 Pin header P14 on the relay board sends 24 VDC to the double line break relay DLB coil When the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection elements 5 Convection relay K10 and broil relay ...

Page 77: ...ven 3 K11 relay closes and activates the convection motor Note the convection motor will stop when the oven door is opened during any convection mode 4 Pin header P14 on the relay board sends 24VDC to the double line break relay DLB coil when the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection elements 5 Bake relay K8 and convection relay ...

Page 78: ...s Completed Circuit Signals Board P14 Activates DLB Relay Coil DLB Relay Contacts Close 120 Volts from L1 Flow to Broil Element NO K11 Relay Closes K9 Relay Closes Convection Motor Runs 120 Volts from L2 Flow to Broil Element PRESS START Incomplete Circuit Flashes F34 or F64 and shuts unit off Page 76 ...

Page 79: ...4 error code for the upper oven and an F64 error code for the lower oven 3 K11relayclosesandactivatestheconvectionmotor Note Theconvection motor will stop when the oven door is opened during any convection mode 4 Pin header P14 on the relay board sends 24 VDC to the double line break relay DLB coil When the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil...

Page 80: ...tes DLB Relay Coil DLB Relay Contacts Close 120 Volts from L1 Flow to Bake Broil Elements NO K8 Relay Closes K9 Relay Closes 120 Volts from L2 Flow to Bake Element 120 Volts from L2 Flow to Broil Element Relays K 8 and K 9 will alternately open and close PRESS START Incomplete Circuit Flashes F34 or F64 and shuts unit off OR Page 78 ...

Page 81: ...play an F34 error code for the upper oven and an F64 error code for the lower oven 3 Pin header P14 on the relay board sends 24 VDC to the double line break relay DLB coil When the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection elements 4 Bake relay K8 and broil relay K9 alternately open and close and send current from L2 to the other leg...

Page 82: ... an f34 error code for the upper oven and an F64 error code for the lower oven 3 Pin header P14 on the relay board sends 24 VDC to the double line break relay DLB coil When the coil is energized the DLB contacts close Current flows from L1 to one leg of the bake broil and convection elements 4 Bake relay K8 and broil relay K9 alternately open and close and send current from L2 to the other leg of ...

Page 83: ...rywinding Theprimarywinding receives 120 volts AC and steps down the secondary winding to 12 volts AC Terminals 6 8 and 10 have a 12 volt AC potential See illustration below When Relay K6 upper oven light or K7 lower oven light are activated the circuit is completed to neutral terminal 8 and the oven lights come on Page 81 ...

Page 84: ......

Search results

Summary of Contents for C271

Reviews:

Related manuals for C271

Brands by name

Popular brands

Thermador C271, Service Manual

Search results

Summary of Contents for C271

Reviews:

Related manuals for C271

Brands by name

Popular brands