DIAGNOSTICS & TROUBLESHOOTING
Jenn-Air Built-in Coffee System
n
5-13
COMPONENT TESTING CHART
Pump
Main Brd - F1
Main Brd - J1-4
120 VAC
6.2 ohms
NOTE POLARITY: Positive side
is connected to J1-4. If meter
leads are reversed the coil will
show open.
NTC, Coffee
Main Brd - J6
Main Brd - J6
90k ohms
Room temperature
NTC, Steamer
Main Brd - J12
Main Brd - J12
112k ohms
Room temperature
Water Level
Sensor
Main Brd - J2
Main Brd - J2
Continuity
Reed switch located at bottom
of water tank. This is in series
with the Water Tank Switch.
Switch M1,
Diverter, Upper
Main Brd - J4-1
Main Brd - J4-3
Continuity
On top of diverter assembly,
next to grinder motor.
Switch M2,
Diverter, Lower
Main Brd - J5-1
Main Brd - J5-2
Continuity
Located behind the drive motor
for diverter.
Switch M3,
Coffee Grounds
Container
Main Brd - J5-3
Main Brd - F3
Continuity*
*Coffee 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 =
continuity, door open = open
circuit. 3-wire switch located
behind service door.
Switch M5,
Carafe Presence
Main Brd - J4-3
Main Brd - J4-4
Continuity
Located behind the hot water
dispenser tube.
Switch M6, Hot
Water Dispenser
Main Brd - J4-3
Main Brd - J4-5
Continuity
Located behind the hot water
dispenser tube.
Switch M7,
Water Tank
Main Brd - J2-1
Main Brd - J2-2
Continuity
This switch is located above
water tank at rear of coffee
system. This switch is in series
with the Water Level Sensor.
Switch M8,
Standby
(Momentary)
Display PCB
Display PCB
Continuity*
*Reads continuity only when
switch is depressed.
Switch, Power
Switch-pin 1
Switch-pin 0
Continuity
Switch Open = Infinity, Switch
Closed = < 3 ohms.
For Service Technician Use Only
Component Testing Chart (continued)
NOTE:
When each switch is activated, the control will beep (sound a tone).
