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DIAGNOSTICS & TROUBLESHOOTING

Jenn-Air Built-in Coffee System

5-1

Section 5:

Diagnostics &

Troubleshooting

This section provides diagnostic, fault codes, and

troubleshooting information for the “Jenn-Air Built-in Coffee

System.”

Safety First

Control Panel

Load Test Mode

Display Test Mode

Customer Instruct / Technical Faults

Wiring Diagram

Ladder Diagram

Main Board

LED/Fan PCB

Plumbing Diagram

Measuring Coffee Temperature

Component Testing Chart

Strip Circuits

Summary of Contents for JBC7624BS

Page 1: ...JC 01 TECHNICAL EDUCATION Built in Coffee System JOB AID W10647095 JBC7624BS...

Page 2: ...Professional to properly diagnose malfunctions and repair the Jenn Air Built in Coffee System The objectives of this Job Aid are to Understand and follow proper safety precautions Successfully trouble...

Page 3: ...TEM CARE 2 11 GENERAL CLEANING 2 11 VACATION OR STORAGE 2 13 SWITCHING OFF THE COFFEE SYSTEM 2 13 CONSUMER TROUBLESHOOTING 2 14 NOTES 2 16 SECTION 3 INSTALLATION INSTALLATION REQUIREMENTS 3 2 TOOLS AN...

Page 4: ...GS 5 2 CONTROL PANEL 5 3 TO ENTER LOAD TEST MODE 5 3 TO ENTER DISPLAY TEST MODE 5 3 CUSTOMER INSTRUCT AND TECHNICAL FAULTS 5 4 WIRING DIAGRAM 5 6 LADDER DIAGRAM 5 7 MAIN BOARD 5 8 LED FAN PCB 5 9 PLUM...

Page 5: ...tion 1 General Information This section provides general safety parts and information for the Jenn Air Built in Coffee System Q Q Coffee System Safety Q Q Model Serial Number Label Q Q Tech Sheet Loca...

Page 6: ...following Read all instructions before using the appliance Do not touch hot surfaces Use handles or knobs To protect against fire electric shock and personal injury do not immerse cords plugs or appli...

Page 7: ...r Built in Coffee System n 1 3 Model Serial Number Label Location Figure 1 Located on left side of coffee system Model Serial Number Label Tech Sheet Location Tech Sheet Location Figure 2 Located on b...

Page 8: ...A Cup tray B Service door C Coffee feed D Coffee grounds container E Brewing unit F On standby button G Cup tray lights H Control panel I Hot water and steam nozzle J Water tank K Coffee spout height...

Page 9: ...hardness as soon as possible See Water Hardness in the Settings section IMPORTANT Complete the following steps before the coffee system is used for the first time 1 Check that the hot water spout is...

Page 10: ...1 6 n Jenn Air Built in Coffee System GENERAL INFORMATION Notes...

Page 11: ...offee System Use Q Q Settings Q Q Switching On and Preheating Q Q Making Coffee or Espresso Using Coffee Beans Q Q Changing the Amount of Coffee Q Q Adjusting the Coffee Grinder Q Q Making Espresso wi...

Page 12: ...pout into the hot water and steam nozzle 2 Turn on the coffee system 3 The available languages will scroll automatically Wait until Press OK to install ENGLISH is displayed Press and hold OK 4 After 5...

Page 13: ...Descaling Auto Start Language and Adjust Time To access the Settings Menu press MENU To exit the Settings Menu press MENU again Rinsing This function is used to rinse the coffee spout or preheat the b...

Page 14: ...sed since the machine was last preheated Hot water from the rinse cycle can be used to preheat a small cup of coffee 1 Press MENU 2 Press the up and down arrow keys until RINSING is displayed Press OK...

Page 15: ...ss MENU to exit the menu Coffee Temperature The temperature of the brewed coffee can be changed 1 Press MENU 2 Press the up and down arrow keys until COFFEE TEMPERATURE is displayed Press OK 3 Press t...

Page 16: ...exit the menu Language The coffee system language can be changed 1 Press MENU 2 Press the up and down arrow keys until LANGUAGE is displayed Press OK 3 Press the up and down arrow keys until the corr...

Page 17: ...ycle before brewing coffee See Rinsing in the Settings section Do not use very thick cups as they will absorb the heat unless preheated Preheat all cups by rinsing them with hot water See Rinsing in t...

Page 18: ...o the funnel NOTE Only use ground coffee meant for espresso coffee machines NOTE Use only the scoop provided Do not add more than one scoop of ground coffee 4 Close the central lid Push the coffee sys...

Page 19: ...s frothed milk will run out of the milk spout and fill the cup below After the milk runoff stops coffee runoff will begin automatically NOTE Press CAPPUCCINO at any time to stop the cappuccino process...

Page 20: ...ppuccino button until PROGRAM QUANTITY Milk for Cappuccino is displayed The coffee system will dispense milk 4 Press the Cappuccino button again to stop the milk runoff and save the desired amount of...

Page 21: ...chine Empty and clean the coffee grounds container regularly 1 Open the service door on the front of the coffee system by pulling on the coffee spout 2 Remove the drip tray and clean it with a soft da...

Page 22: ...spout 3 Remove the drip tray and the coffee grounds container 4 Press the two red release buttons inward and pull the brewing unit out 5 Soak the brewing unit in water for about 5 minutes then rinse...

Page 23: ...ystem will be unused for an extended period of time empty the coffee grounds container drip tray and water tank Turn the coffee system off using the main On Off switch and unplug it before storage Swi...

Page 24: ...number 1 while the coffee mill is in operation Results are visible only after making 2 cups of coffee See the Adjusting the Coffee Grinder section The coffee does not run out of one or both of the spo...

Page 25: ...coffee system thoroughly as described in Cleaning the Inside in the General Cleaning section If the message is still displayed after cleaning contact a service center GROUND TOO FINE ADJUST MILL INSER...

Page 26: ...2 16 n Jenn Air Built in Coffee System OPERATION Notes...

Page 27: ...ion provides installation requirements and procedures for the Jenn Air Built in Coffee System Installation Requirements Tools and Parts Location Requirements Electrical Requirements Installation Instr...

Page 28: ...ed portion of the coffee system Grounded electrical supply is required See Electrical Requirements section Refer to installation instructions for cutout dimensions for any appliances installed above o...

Page 29: ...se or circuit breaker is also recommended It is recommended that a separate circuit serving only this coffee system be provided Check that the outlet provides 120 volt power and is correctly grounded...

Page 30: ...1 mm bracket spacers are included See Step 3 3 If bracket spacers are needed Position the necessary spacer s behind the mounting brackets Continue with Step 4 4 Using a 2 mm drill drill the holes mar...

Page 31: ...heck that the coffee system is level If it is not level repeat steps 4 and 5 If it is level secure the coffee system to the L brackets with the four 4 2 x 9 5 mm screws 7 Position the power supply cor...

Page 32: ...tripped Replace the fuse or reset the circuit breaker If the problem continues call an electrician Check that the power supply cord is plugged into a grounded 3 prong outlet See the Use and Care Guid...

Page 33: ...System Parts List Jenn Air Built in Coffee System Disassembly Section Before Disassembling the Coffee System Removing the Fan Panel Removing the Back Panel Trays Removing the Main Power Board Removin...

Page 34: ...4 2 n Jenn Air Built in Coffee System COMPONENT ACCESS 11 5 86 6 Coffee System Exploded Views Reference Parts List on page 6...

Page 35: ...COMPONENT ACCESS Jenn Air Built in Coffee System n 4 3 112 13 126 127 122 16 15 14 12 99 07 06 11 21 107 108 Reference Parts List on page 6...

Page 36: ...4 4 n Jenn Air Built in Coffee System COMPONENT ACCESS 55 56 57 51 52 40 41 42 43 37 35 36 A A 53 58 48 47 47 49 50 47 46 39 115 32 33 34 Reference Parts List on page 6...

Page 37: ...in Coffee System n 4 5 C 97 95 68 68 96 98 103 60 91 60 90 93 80 80 60 81 92 86 75 78 66 62 64 68 74 80 77 A 63 46 82 79 60 81 88 84 60 87 85 84 88 85 102 60 A B 80 89 90 60 B C 60 101 100 83 83 67 12...

Page 38: ...RD LED 089 TUBE PTFE D12 DE4 L 150 2BUSHES 031 CONTROL BOARD 090 CONNECTION 032 MICROSWITCH 091 SOLENOID VALVE 033 COMPLETE GRINDER 092 TUBE PTFE D12 DE4 L 335 1 BUSHES 034 GASKET 093 SOLENOID VALVE 0...

Page 39: ...COMPONENT ACCESS Jenn Air Built in Coffee System n 4 7 Jenn Air Built in Coffee System Disassembly Section...

Page 40: ...unit A Cup tray B Service door C Coffee feed D Coffee grounds container E Brewing unit F On standby button G Cup tray lights H Control panel I Hot water and steam nozzle J Water tank K Coffee spout he...

Page 41: ...nd panels before operating 1 Remove two 2 screws from the corner on the right side see Figure 1 Figure 1 2 Remove one 1 screw from the corner on the left side see Figure 2 Figure 2 3 The fan cover unc...

Page 42: ...o 2 screws from the back panel and one screw from underneath the tray see Figure 2 in next column Remove both trays from the coffee system Removing the Back Panel Trays WARNING Electrical Shock Hazard...

Page 43: ...lectrical shock Replace all parts and panels before operating Removing the Main Power Board 1 Remove back panel page 4 10 to access main power board see Figure 1 2 Disconnect all harnesses If necessar...

Page 44: ...rating Removing the Flow Meter 1 Remove back panel page 4 10 to access flow meter assembly see Figure 1 Figure 1 2 Unscrew the screw to remove the electrical cable bracket see Figure 2 Set aside to ac...

Page 45: ...before operating Removing the Water Pump 1 Remove back panel page 4 10 to access water pump assembly see Figure 1 Figure 1 2 Disconnect the three 3 hoses from the water pump see Figure 2 3 Disconnect...

Page 46: ...page 4 10 to access Steam Heater 3 Way Valve assembly 2 To remove the Steam Heater disconnect the four 4 hoses shown by the arrows in Figures 1 2 3 Figure 1 Figure 2 3 Unscrew the two 2 screws illust...

Page 47: ...COMPONENT ACCESS Jenn Air Built in Coffee System n 4 15 Steam Outlet Steam Heater Element Power Connection 3 Way Valve NTC Connection Water Inlet Steam Heater 3 Way Valve Assembly Figure 5...

Page 48: ...y 2 Open service door to access Infuser assembly Remove drip tray from coffee system Figure 1 3 Press in on the red clips on each side of the Infuser assembly and then pull the infuser out of the coff...

Page 49: ...he drive belt from the transmission motor pulleys see Figure 5 Figure 5 7 Unscrew four 4 screws from the motor bracket see Figure 6 in next column Remove Diverter Motor from transmission assembly Figu...

Page 50: ...in death or electrical shock Replace all parts and panels before operating Remove Upper Panel 1 Remove back panel page 4 10 to access the Coffee Heater see Figure 1 2 Remove two 2 screws at the rear o...

Page 51: ...bly Water Inlet Remove Coffee Heater Assembly Figure 1 Refer to Figure 2 when performing the following steps 1 Disconnect the Power harness NTC harness and water hoses from the coffee heater 2 Remove...

Page 52: ...ating Removing the Display Board 2 Way Valve Remove Display PCB 1 First perform preparation procedure on page 4 8 Before Disassembling the Coffee System prior to performing the following steps 2 Next...

Page 53: ...Figure 4 Figure 4 6 Remove two 2 screws from the left side of coffee system see Figure 5 Figure 5 7 Remove two 2 screws from the right side of coffee system see Figure 6 Figure 6 8 From the front of...

Page 54: ...inside the upper right compartment see Figure 8 Figure 8 10 Remove one 1 screw from inside the upper left compartment see Figure 9 Figure 9 11 Disconnect the harnesses and wiring to the front panel Th...

Page 55: ...anel see Figure 13 Figure 13 Remove 2 Way Valve 1 Locate and remove the two 2 screws illustrated in Figure 1 Figure 1 2 Remove the metal guide as illustrated in Figure 2 Figure 2 Refer to Figure 3 whe...

Page 56: ...Grinder knob then remove the screw see Figure 1 Figure 1 2 Remove the finger guard Then remove the coffee bean storage area from the grinder by removing the screws illustrated in Figure 2 Figure 2 3 T...

Page 57: ...shaft counterclockwise till it stops then pull up on shaft to remove it see Figure 3 Figure 3 5 Now the grind setting can be changed To increase the coarseness of the grind thicker turn the gear count...

Page 58: ...T ACCESS 8 Turn the shaft clockwise till it stops to insert the upper gear Then enter the mill by turning back counterclockwise until it stops see Figure 6 Figure 6 8 8 9 Insert the locking ring in th...

Page 59: ...iagnostic fault codes and troubleshooting information for the Jenn Air Built in Coffee System Safety First Control Panel Load Test Mode Display Test Mode Customer Instruct Technical Faults Wiring Diag...

Page 60: ...ly to a green ground connection point or unpainted metal in the appliance Before removing the part from its package touch the anti static bag to a green ground connection point or unpainted metal in t...

Page 61: ...hen turn OFF NOTE When the coffee system is reset the language must be set again To Enter Display Test Mode Test the User Interface Before proceeding with any corrective action perform the following s...

Page 62: ...ee brand Blend of coffee is unsuitable Use a blend of coffee specifically for espresso coffee machines GENERAL ALARM When machine was turned on NTC Coffee NTC Steamer Unplug coffee system or disconnec...

Page 63: ...heck the drive belt If the drive belt is broken replace the complete grinder Grinder motor does not run Faulty motor Unplug coffee system or disconnect power Replace the complete grinder DESCALE Water...

Page 64: ...Heater BK BK BK Pump Pump Motor Protector BR W R P F1 F2 J6 J1 PCB LED Fan Motor Cooling Fan BK BR BK Fuse BK BR F4 F3 F2 F1 BR L L L L Motor Filter M4 M 6 5 4 3 2 1 BR R BK R W J1 Route 3 Grinder M...

Page 65: ...SwitchH Coffee Heater M6 M5 J4 M1 M2 J5 TCO F7 Pump P J1 M Group Infusion Motor Filter F5 N Grinder M4 Fuse M TCO PTC EV 1 EV 2 L L L L Way Out Steam Steam Heater L PCB LED Fan F1 F2 J6 J1 Motor Cool...

Page 66: ...2 2 Way Valve J1 2 120 VAC EV1 3 Way Valve J1 3 GND Diverter Motor J1 4 120 VAC Pump J1 5 140 VDC Diverter Motor J1 6 120 VAC Switch M4 Service Dr CONNECTOR J2 Water Level Tank Presence J2 1 Water Lev...

Page 67: ...OR PIN OUTS CONNECTOR J12 NTC Steam Heater J12 1 VDC J12 2 NTC Input CONNECTOR J13 Display PCB J13 1 5 VDC J13 2 TX BUS Max 5 VDC J13 3 TX BUS Max 5 VDC J13 4 GND J13 5 7 VDC J13 6 Data Out Max 5 VDC...

Page 68: ...vice Technician Use Only Plumbing Diagram Water Tank Drip Tray Steam Heater 1000 W Water Filter Flowmeter Pump T Connector EV1 3 Way Valve EV2 2 Way Valve Infusion Unit Coffee Heater 1200 W Hot Water...

Page 69: ...ake coffee 4 While the machine is delivering the coffee place the temperature probe under the coffee flow at approximately 10 mm from the exit of the spout 5 The temperature should read 172 F 6 5 F 78...

Page 70: ...GND Pin 5 7 VDC Pin 6 DATA OUT MAX 5 VDC Pin 7 DATA IN MAX 5 VDC Pin 8 CLOCK MAX 5 VDC N A Connector going to Display PCB Supplies circuit ground 5 VDC 7 VDC and transmission lines NOTE 12 VDC is pro...

Page 71: ...e grounds container removed open circuit if container installed continuity 3 wire switch located behind main board Switch M4 Service Door Main Brd J1 6 Main Brd F3 Continuity Service door closed conti...

Page 72: ...NOTE Both heaters measured in parallel To measure upplug terminal F9 from Main Board NOTE Check TCO s if open circuit is detected BK R R W W BK BK BK BK BK L1 MAIN BOARD N 15 4 ON OFF SWITCH ON OFF SW...

Page 73: ...polarity reverses to drive motor up down GND BK R L1 MAIN BOARD N 458k ON OFF SWITCH ON OFF SWITCH EV1 SWITCH EV1 3 WAY VALVE CHASSIS GND L1 TERMINAL BLOCK 3 WAY VALVE J1 2 F5 NOTE 2 way valve is grou...

Page 74: ...CH P PTC L1 TERMINAL BLOCK PUMP J1 4 F5 PUMP POLARITY Positive side is connected to J1 4 If meter leads are reversed the coil will show open F4 F1 MAIN BOARD BK BK BK BR BR BR W W WATER FLOW SWITCHES...

Page 75: ...TO IDENTIFY YOU AS AN AUTHORIZED IN HOME SERVICE PROFESSIONAL FOR LITERATURE ORDERS CUSTOMER EXPERIENCE CENTER PHONE 1 800 851 4605 FOR TECHNICAL INFORMATION AND SERVICE POINTERS www servicematters co...

Page 76: ...Jenn Air Built in Coffee System W10647095...

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