GE JK1000 Technical Service Manual
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GE JK1000 Technical Service Manual

27” single and double units 30” single and double units
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Technical Service Guide
March 2013
2013 WALL OVENS
27" Single and double units
30" Single and double units
JK1000 JT1000
JK3000 JT3000 JK3500 JT3500
JK5000 JT5000 JK5500 JT5500
PK7000 PT7050 PK7500 PT7550
PT9050
PT9550

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  • Page 1 Technical Service Guide March 2013 2013 WALL OVENS 27” Single and double units 30” Single and double units JK1000 JT1000 JK3000 JT3000 JK3500 JT3500 JK5000 JT5000 JK5500 JT5500 PK7000 PT7050 PK7500 PT7550 PT9050 PT9550...
  • Page 2 RECONNECT ALL GROUNDING DEVICES If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position & properly fastened. GE Title or job number 11/26/2013...
  • Page 3 GE Title or job number 11/26/2013...
  • Page 4 Control panels F-codes Accessing F-codes - T012 Service modes - T012 Service modes - Machine control JK1000/JT1000 T09 Control, circuits and troubleshooting JT5000 T012 Control, circuits and troubleshooting Machine Control - Circuits and troubleshooting Components GE Title or job number...
  • Page 5 2013 WALL OVENS INTRODUCTION In 2013 GE is presenting the new versions of 27” and 30” wall ovens. Featuring larger oven cavities, smaller height, advanced convection operation, LED notification lighting and remote enable, on some of its models. Servicing of these products has changed very little.
  • Page 6 LOCKED mode. Note: a 7” piece of brazing solder, bent into “L” shape works very well to access latch pawl. Be sure to put tape on “tool” to prevent scratching trim. GE Title or job number 11/26/2013...
  • Page 7 (some features not on all models) Dimensions- Smaller height profile to enable units to fit into cabinet openings previously used by competitors models. Use of rails for installation in normal GE cabinet dimensions. Notification lighting- LED light banks between control panel and upper oven door.
  • Page 8 JK3500 PK7500 JK5500 TO12-tactile TO12-glass TO12-glass Normal Convection Lights PK7000 JK5000 JK3000 JK1000 TO12-glass TO12-glass TO12-tactile 27” models front view...
  • Page 9 PT9550 PT7550 JT5500 JT3500 Notification Machine Machine TO12-glass TO12-tactile Lights Advanced Convection Normal Convection Lights PT9050 PT7050 JT5000 JT3000 JT1000 Machine Machine TO12-glass TO12-tactile 30” models front view...
  • Page 10 Model series – 5 SELF-CLEAN with GLASS TOUCH controls Model series – 7 SELF-CLEAN with GLASS TOUCH controls and REMOTE ENABLE* PK only Model series – 9 SELF-CLEAN with GLASS TOUCH controls, ADVANCED CONVECTION, NOTIFICATION LIGHTS and REMOTE ENABLE GE Title or job number 11/26/2013...
  • Page 11 Start. Preheating is Roast pad under Convection, enter a temperature, generally recommended when using this mode. and then press Start. It is not necessary to preheat when using this mode. Back to T of C GE Title or job number 11/26/2013...
  • Page 12 Traditional and then press Start. It is not by using Traditional Broil Lo or Convection Broil Lo. necessary to preheat when using this mode. GE Title or job number 11/26/2013...
  • Page 13 (*) Feature only found on some models The temperature probe can only be used with Traditional Bake, Convection Bake, and Convection Roast modes. GE Title or job number 11/26/2013...
  • Page 14 It runs CCW the rest of the cycle in Convection Bake, and Convection Roast. And CW is the steady-state in Multi-rack convection Bake. The fan motor runs in a CCW direction and is the steady-state of operation in Convection Broil modes (Hi, Low and Crisp). GE Title or job number 11/26/2013...
  • Page 15 The door will stay locked until the decrease the steam clean performance. oven has cooled down. After the oven has cooled down wipe any ash out of the oven. Back to T of C GE Title or job number 11/26/2013...
  • Page 16 DWO- Double Wall Oven Tactile – Defines the type of input to control, tactile controls are switches mounted to the front part of ERC and are covered with an overlay. Back to T of C GE Title or job number 11/26/2013...
  • Page 17 GE Title or job number 11/26/2013...
  • Page 18 GE Title or job number 11/26/2013...
  • Page 19 Pedestal rails- spacers for GE sized cut-out, rails are not needed for competitors sized cut-out. Back to T of C Mounting screws Back to T of C GE Title or job number 11/26/2013...
  • Page 20 4. Close door to the door removal position. The door should be open approximately 3" with no obstruction above the door. 5. Lift door up and out until both hinge arms are clear of the slots. Back to T of C GE Title or job number 11/26/2013...
  • Page 21 4. Push the hinge locks up against the front frame of oven cavity, to the locked position. 5. Close the oven door. GE Title or job number 11/26/2013...
  • Page 22 The same is true on the Machine control. On Tactile control, (shown below) panel is just a cosmetic piece. Back to T of C T20 Screws GE Title or job number 11/26/2013...
  • Page 23 Control panels - DWO tactile shown Mini-Manual RJ45 ¼” screws Back to definitions GE Title or job number 11/26/2013...
  • Page 24 Control panels- User Interface rear view T012 Glass touch Connector harness to T012 control Machine Control RJ45 Communication plug Back to definitions GE Title or job number 11/26/2013...
  • Page 25 PT9050/9550 – Control panel - rear view LED notification light boards RJ45 User Interface Wireless module board (remote) GE Title or job number 11/26/2013...
  • Page 26 Each key press shall turn on the associated load. Each load shall turn off when one of the following conditions is met: the same key is pressed again; or another key has been pressed; or 10 seconds has passed after the key has been released. Back to T of C GE Title or job number 11/26/2013...
  • Page 27 DIGIT KEYS – Light up in every available 7-segment display the key being pressed (pressing the 7 key would show “777 77:77”). NOTE: The “1” and “2” keys are used for convection fan, and should also display the digits in the display when applicable. CLEAR/OFF – Shall reset the control. GE Title or job number 11/26/2013...
  • Page 28 Each key press shall turn on the associated load. Each load shall turn off when one of the following conditions is met: the same key is pressed again; another key has been pressed; or 10 seconds has passed after the key has been released. GE Title or job number 11/26/2013...
  • Page 29 OVEN LIGHT – Energize the oven light for the corresponding cavity. DELAY TIME – Display the software version in the time digits. PROBE – Display the probe temperature in the temperature display. SET CLOCK – Energize the cooling fan relay. GE Title or job number 11/26/2013...
  • Page 30 Bake until the user presses Broil, then the control shall turn off the Bake relay and turn on the Broil relay and hold the Broil element on until 10 second after the key has been pressed. Back to T of C GE Title or job number 11/26/2013...
  • Page 31 F- Codes T09 Back to T of C GE Title or job number 11/26/2013...
  • Page 32 INPUTS to the control. Only a couple of codes are due to a defect in a control board. Inputs- Oven sensor, latch switches, meat probe, keypanel, cooling fan motor feedback and with the Machine control units, communications between control and User Interface. GE Title or job number 11/26/2013...
  • Page 33 Check resistance of oven sensor circuit on ERC (T012) at CN300 pin 1 to 3 W to W/BK for upper oven (F20, 21, 30, 31) and pin 1 to 8 W to W/R for lower oven (F22, 23, 32, 33) GE Title or job number 11/26/2013...
  • Page 34 1852Ω 1892Ω 500°f =approx. 550°f =approx. 1950Ω 2047Ω 600°f =approx. 650°f =approx. 2142Ω 2237Ω Upper oven - wires 1 to 2 Lower oven - wires 1 to 2 700°f =approx. 800°f =approx. 2331Ω 2516Ω GE Title or job number 11/26/2013...
  • Page 35 O/W to GN should be 30k-50k Ω O/W to GN should be 30k-50k Ω ∞) ∞) with probe installed. Open, ( with probe installed. Open, ( circuit without probe installed. circuit without probe installed. GE Title or job number 11/26/2013...
  • Page 36 Interface and J700 on upper and lower machine controls In case of F6* check for status LED on each board, if wiring good and NO indicator replace board that doesn't have flashing LED Upper Lower User Interface GE Title or job number 11/26/2013...
  • Page 37 Keypanel F70 & F71 T012 tactile F70,F71 are associated with the ERC detecting a continuous keypanel press, verify overlay is not creased, if ok, replace ERC. GE Title or job number 11/26/2013...
  • Page 38 T012 Glass touch F7 codes on these units will display two numbers F70 – F79 are all associated with glass touch, verify harness plugs and wires are seated properly. If good, replace Glass touch. GE Title or job number 11/26/2013...
  • Page 39 F7E Glass touch COMMUNICATION failure F7F Glass touch Cyclic Redundancy Check failure (CRC) In most occurrences of a F7_, - failure is within the glass touch and will most likely have to be replaced. GE Title or job number 11/26/2013...
  • Page 40 Other F codes F80 & F81 ERC T012 F80-F81 These F codes are not associated with an input to the board, it is this is an electronic problem internally within control. Replace ERC. GE Title or job number 11/26/2013...
  • Page 41 F80, F81, and F82 these are the result of an electronic problem internally in control. Replace machine control associated with code. F80 UPPER machine control. F81 LOWER machine control F82 Interface data failure (CRC) Replace UI GE Title or job number 11/26/2013...
  • Page 42 The reading for the lower lock circuit should show continuity from Y/W pin 10 (common) to BL pin 4 in UNLOCKED (BAKE) position and continuity from Y/W pin 6 to O pin 5 in LOCKED (SELF CLEAN) position. GE Title or job number 11/26/2013...
  • Page 43 With door closed and latch in self clean position, there should be continuity between PIN 1 to 2 – Y/W to O/W, AND PIN 1 to 3 Y/W to BR/W (tests door position switch) for LOWER oven. GE Title or job number 11/26/2013...
  • Page 44 BK. Feedback will be checked from pin 7 of CN300 BK to pin 1 of CN700 Bu for UPPER. LOWER will be checked from pin 7 of CN300 BK to pin 3 of CN700 PR. GE Title or job number 11/26/2013...
  • Page 45 5VDC W pin 4 to BK pin 6. Signal from cooling fan board will be checked J900 pin 5 PR to pin 6 BK on UPPER and J900 pin 5 PR/W to pin 6 BK on LOWER machine board GE Title or job number 11/26/2013...
  • Page 46 Bake relay- yellow dot- supplies L1 to bake element Broil relay- purple dot- supplies L1 to broil element DLB- red and orange dots- supplies L2 Back to T of C to both elements Back to definitions. GE Title or job number 11/26/2013...
  • Page 47 Troubleshooting- all AC circuits Only in circuit for end of line test GE Title or job number 11/26/2013...
  • Page 48 BLACK on broil relay to WHITE on TB101. If 120vac, board needs to be replaced. If NO voltage, check for 120vac from WHITE TB101 to chassis ground, if 120vac, limit switch is open (called fan apparency switch) GE Title or job number 11/26/2013...
  • Page 49 Y on RLY101 to O on RLY102 should be approx. 20 Ω If ∞ (open) suspect HIGH LIMIT is open. NOTE: Unit should also have no BROIL function if HIGH LIMIT is open. GE Title or job number 11/26/2013...
  • Page 50 PR on RLY100 to O on RLY102 should be approx. 15 Ω If ∞ (open) suspect HIGH LIMIT is open. NOTE: Unit should also have no BAKE function if HIGH LIMIT is open. GE Title or job number 11/26/2013...
  • Page 51 (LOTO) from TB101 to BK/W wire on switch, should show lamp resistance. If showing resistance 100Ω approx. Test door plunger switch. NOTE: Schematic on mini manual is mislabeled for OVEN LIGHT SWITCH – CORRECT wiring is shown in GREY GE Title or job number 11/26/2013...
  • Page 52 STEAM CLEAN function and if door is open for prolonged cooking times. With door CLOSED it should measure a CLOSED circuit from BR to Y wires on pins 1 - 3 on P200 @ board, with plug removed from board. GE Title or job number 11/26/2013...
  • Page 53 Broil- Supplies L1 to one side of broil element CN260- RJ45, DLB- Supplies L2 to ALL elements (*) These connectors will not be present on board if unit is not equipped Back to definitions. Back to T of C GE Title or job number 11/26/2013...
  • Page 54 4 plastic clips on each side of ERC they can be or rear. On tactile units the clips closest to ERC accessed from the front or rear of control are not seen from front. bracket. GE Title or job number 11/26/2013...
  • Page 55 Lower oven relay board- (daughter) Back to definitions. GE Title or job number 11/26/2013...
  • Page 56 Making sure there is a load on the line. Wires still connected to board. Check BK wire to chassis ground, if voltage present suspect open thermal limit switch of loss of Neutral from house supply. GE Title or job number 11/26/2013...
  • Page 57 35-40 Ω If ok, check between PR on RLY500A to O on RLY540 should be approx. 15 Ω. If ∞ (open) suspect HIGH LIMIT is open. Unit should also have no BROIL function if HIGH LIMIT is open. GE Title or job number 11/26/2013...
  • Page 58 PR on RLY500A to O on RLY540 should be approx. 15 Ω If ∞ (open) suspect HIGH LIMIT is open. Unit should also have no BAKE function if HIGH LIMIT is open. GE Title or job number 11/26/2013...
  • Page 59 Troubleshooting- Preheat Control cycles between all elements during preheat, when preheat temp reached continues with just bake and broil elements and convection fan motor shuts off. GE Title or job number 11/26/2013...
  • Page 60 PR on RLY500A to O on RLY540 should be approx. 15 Ω If ∞ (open) suspect HIGH LIMIT is open. Unit should also have no BROIL function if HIGH LIMIT is open. GE Title or job number 11/26/2013...
  • Page 61 Common Neutral test point TB101 WHITE Latch motor CN600-1 GY/BK 1.8KΩ Convection fan motor CN650-2 BLUE 30Ω Light circuit CN600-7 BR to CN600-5 BK (not shown) 18Ω Cooling fan motor LOW CN600-3 BK/W* 25Ω *15Ω if Double Wall Oven GE Title or job number 11/26/2013...
  • Page 62 Latch motor CN600-1 GY/BK to TB101 W approx. 1.8KΩ NOTE: door has to be closed* Cooling fan motor LOW CN600-3 BK/W to TB101 approx. 25Ω. NOTE: 15Ω IF DWO - as there are 2 motors in parallel GE Title or job number 11/26/2013...
  • Page 63 Self-clean -Broil unit ON for 30 minutes or until temp reaches 785- then cycles between Bake and Broil for the duration of the Self clean cycle. RY660 is only active when locking or unlocking door. Switch on latch mechanism GE Title or job number 11/26/2013...
  • Page 64 Troubleshooting – lower oven circuits Connections are all located on LOWER OVEN RELAY BOARD (daughter board) NOTE: Both COOLING FAN MOTORS come on together. Upper oven circuit Lower oven circuit GE Title or job number 11/26/2013...
  • Page 65 J6 Pin out - AC CIRCUITS PIN 1- BLANK PIN 2- WHITE - neutral PIN 3- BROWN – light PIN 4- BLANK PIN 5- BLANK PIN 6- BLACK – L1 PIN 7- GREY/BLACK – lock motor GE Title or job number 11/26/2013...
  • Page 66 Lower oven relay board -(daughter board) T012 dc circuits Lower oven relay board J15 plug Very small terminals on both boards! GE Title or job number 11/26/2013...
  • Page 67 L2-DLB Broil Bake J101 J300 oven ground sensor Meat probe J700 Communications Located behind control panel on floor 1 -1/4” screw secures board to air duct. Back to definitions. Back to T of C GE Title or job number 11/26/2013...
  • Page 68 J700 Communications J300 oven sensor Meat probe L1 input to board Common NEUTRAL J102 J101 J900 door switches Ground Upper FAD board J803 conv. J804 outer broil J801 Lights, cooling fan, convection fan GE Title or job number 11/26/2013...
  • Page 69 Cooling fan motor LOW - J801-2 RED/W to J102 WHITE approx. 25Ω Convection fan motor CW - J801- 5 RED to J102 WHITE approx. 300Ω Convection fan motor CCW - J801- 4 BLUE/W to J102 WHITE approx. 300Ω GE Title or job number 11/26/2013...
  • Page 70 Troubleshooting- Preheat Control cycles between all elements during preheat, when preheat temp reached continues with just bake and broil elements and convection fan motor shuts off. GE Title or job number 11/26/2013...
  • Page 71 Purple to Yellow should show approx. 37Ω. Checking both Broil units - Purple to Purple/Yellow should show approx. 75Ω. If elements check good, but not to the Orange wire, suspect an open HIGH LIMIT SWITCH. GE Title or job number 11/26/2013...
  • Page 72 Remove 2 – ¼” screws top rear air channel duct, from middle and lower. Next slide. Motor assembly can now be pulled out to access FAD or motor. When reassembling, make sure plug is seated into wire cover before reinstalling motor Screws Fan plug GE Title or job number 11/26/2013...
  • Page 73 To access cooling fan motor, remove screws securing top cover and cover above motor 4 – ¼” screws hold fan motor bracket to frame. If just replacing “FAD” board, remove 1 - T10 torx from board. GE Title or job number 11/26/2013...
  • Page 74 Cooling fan motor/FAD – Lower- continued FAD board held onto mounting with 7mm nuts. FAD board 7mm nuts Back to definitions Return to T of C GE Title or job number 11/26/2013...
  • Page 75 Latch assembly – unlatched T012 controls LOWER - unlatched feedback switch ¼” TOP - fan speed terminals switch Latched feedback switch Door position switch Back to features GE Title or job number 11/26/2013...
  • Page 76 In the event that the door latch fails in locked position. Be sure to put tape on “tool” to prevent scratching trim. Shown with heat shrink on it. 2” Back to features GE Title or job number 11/26/2013...
  • Page 77 Latch assembly – unlatched – Machine control Latched/unlatched feedback switch ¼” terminals Door position switch GE Title or job number 11/26/2013...
  • Page 78 The thermal limit switch will open up the L2 circuit to all elements in case of a failure in relay or grounded element. Opens at 177° C (350° F) NON resettable. Additional thermal switch - only on NON SELF CLEAN MODELS JK1000/JT1000, it opens Neutral to control if it exceeds 221° F, it will reset at 191° F.
  • Page 79 After removing convection element cover, and fan blade from front. Use LOTO and remove unit from installation. Remove rear wire cover to access 3 – T20 screws. When reinstalling motor ensure all insulation is installed GE Title or job number 11/26/2013...
  • Page 80 Convection motor – advanced - reversible and variable speed This type of motor uses a capacitor, the capacitor is now located in top control area. GE Title or job number 11/26/2013...
  • Page 81 Notification LED boards Back to T of C Back to Definitions GE Title or job number 11/26/2013...
  • Page 82 Oven sensor - note: be sure to reinstall insulation piece behind bracket GE Title or job number 11/26/2013...
  • Page 83 Hidden bake part 1 Insulation- one strip with foil backing, backing towards oven, 1 piece of partially cut insulation, may be changing. Note: be sure element is IN bracket and not above. GE Title or job number 11/26/2013...
  • Page 84 Hidden bake part 2 GE Title or job number 11/26/2013...
  • Page 85 Hidden bake insulation Before removing top piece of hidden bake Insulation carefully cut 2 tabs holding piece together GE Title or job number 11/26/2013...
  • Page 86 Hidden bake- bottom view GE Title or job number 11/26/2013...
  • Page 87 Replace blade if damaged or out of spec. Remove 5 - T20 (1/2”) long screws to remove air duct, then 4 - T20 (1/2”) screws to remove element. To remove Shown with element dismounted from rear wall, but wiring still attached. Back to T of C GE Title or job number 11/26/2013...
  • Page 88 NOTE: The progress bar for timed functions takes priority over the solid or pulsating functions if both are being used at the same time. Back to other features GE Title or job number 11/26/2013...
  • Page 89 Intro and features Definitions- in particular - control differences Cycles- convection operation of MC F-Codes- Stress the fact that 90% of f-codes are NOT a board fault. Accessing F-codes- on T012 units, as it saves steps into manual SERVICE MODE New components- FAD boards for fan speed monitoring Hidden bake - access...

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