4-1
DIAGNOSIS & TROUBLESHOOTING
FAILURE / ERROR DISPLAY CODES
• Always disconnect power before touching
any internal parts in the oven.
• Upon replacement, immediately return the
old electronic oven control using the mailing
label that is supplied with each new control.
• The failure code is displayed on the side of
the control that is hidden behind the mem-
brane switch. The control will need to be
unscrewed from the panel to see the hidden
display.
FAULT
ERROR
MEANING OF
CODE
CODE
FAILURE CODE
F0
E0
Default F code - no failure
Will only be displayed if user presses and holds CANCEL key for 5 seconds and there is
no pre-existing fault. Press CANCEL again to clear the display.
E0, E1, E2
Door switch malfunction.
Function not used.
E3, or E4
Electronic control malfunction.
Replace control.
E0 or E1
Keypad not connected.
Check keypad connector for firm connection.
Keypad held down too long, or
keypad is shorted.
E0
Control board resistor opened.
Check resistor in harness bet ween P5-8 to P5-9. Resistance should measure
E1
Control board resistor shorted.
between 1000
Ω
and 1852
Ω
. If not in this range, replace the harness.
Check the resistance of the convection sensor. It should measure:
Room Ambient:
15˚C (59˚F) 20˚C (68˚F) 25˚C (77˚F) 30˚C (86˚F)
Resistance (K
Ω
):
294.7 - 471.2 233.2 - 366.9 185.7 - 287.7 148.8 - 227.2
If this range is not within limits, replace the convection sensor.
Function not used.
Check harness connection.
E0
Self-clean latch will not lock.
E1
Self-clean latch will not unlock.
All Other
Codes
RECOMMONDED REPAIR PROCEDURE
F1
F2
E3
Press CANCEL if error code returns after 60 seconds, then replace keypad.
Electronic control malfunction.
Replace control.
F3
F4
E0
E2
Convection sensor malfunction.
F8
Function not used.
Meat probe shorted.
COMPONENTS THAT CAN BE TESTED AT THE CONTROL PANEL
FRONT / REAR
SERVICEABLE
Blower (Low Speed)
Rear
P7-6 (VT) to Neutral (W)
10
Ω
to 15
Ω
Microwave Light
Primary Winding
40
Ω
TO 45
Ω
Transformer
Secondary Winding
Less than 1
Ω
COMPONENT
CHECK POINTS
RESULTS
Front
FRONT / REAR
SERVICEABLE
Convection Element
(M/W)
Convection Fan
(M/W)
Rear
P8-3 (BR) to Neutral (W)
10
Ω
TO 20
Ω
P10-3 (Y) to Neutral (W)
44
Ω
COMPONENT
CHECK POINTS
RESULTS
Rear
Summary of Contents for KAC-24
Page 1: ...TECHNICAL EDUCATION JOB AID 4317283 KAC 24 BUILT IN MICROWAVE OVEN ...
Page 12: ... xii NOTES ...
Page 44: ...2 30 NOTES ...
Page 65: ...6 3 NOTES ...
Page 66: ...6 4 NOTES ...