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DIAGNOSTICS (Cont.)
Key Name
Function
Cooling Fan On
1
OR
Cavity Light
and Turntable
Motor* On—
Relay 4901
Cavity Light,
2
Cooling Fan, and
Turntable ON
OR
Hood (Cooktop)
Light ON
(High)—Relay
4911
TT, CL, MW Relay
3
4913 & 4903
(1000W) On for
10 seconds
HF NTC
4
Thermistor
5
-
Cavity Light &
6
Turntable On—
Relay 4901
OR
Hood (Cooktop)
Light On (High)
—Relay 4910
7
Hood Light Relay
4909 On
OR
Vent Fan On (Low
Speed) – Relay
4905
NOTE: Many of the problems listed in the chart below may be solved by power cycling: Unplug microwave oven or disconnect power.
After 1 minute, plug in microwave oven or reconnect power.
Display
Likely Failure
Condition
Enter the Diagnostics mode (press CANCEL - CANCEL - START) and press COOK TIME/POWER to verify the failure code. If the failure
code displayed matches complaint, see chart below for details.
Flashing colon ":"
Power failure
F1E4
Microwave
ACU PCBA
failure
F2E1
Stuck key
failure
n
2-4
Microwave Hood Combination
For Service Technician Use Only
Display
Buzzer
Cavity Lamp
1 beep
OR
Key 33
Cavity Light and
1 beep
Turntable
OR
Key 34
MW Turbo On
1 beep
OR
Key 35 or Key 36
1 beep
100-977**
OR
XXX
OR
Key 14 or Key 34
Key 15 or Key 37
1 beep
or Key 38
1 beep
Hood Light High
OR
Key 38
1 beep
Hood Light Low
OR
Key 39
Error/Failure Codes Indications
Recommended Repair Procedure
After a power failure, the colon ":" will be flashing. Press any key to end this indication. The
colon will then be steady when in standby.
1. Unplug microwave oven or disconnect power.
2. Replace ACU PCBA.
3. Replace all parts and panels before operating.
4. Plug in microwave oven or reconnect power.
1. Unplug microwave oven or disconnect power.
2. Replace touch panel.
3. Replace all parts and panels before operating.
4. Plug in microwave oven or reconnect power.
Key Name
Function
Hood (Cooktop)
8
Light On
(Night)— Relay
4912
OR
Vent Fan Relay
4911 On (High
Speed)
9
HF On (High
Speed)— Relay
4902 & Relay
4905
OR
Vent Fan On
Relay 4911 Off
(Low Speed)
Off/Cancel
Exit Test mode
(to lock,
hold for 3 seconds)
Options
-
Options/Clock
Error history
check
OR
HF NTC
Thermistor
Pizza
-
Popcorn
-
>
-
>
-
*Turntable motor does not turn on with cavity light when door is open.
**Varies, depending on room temperature.
NOTE: Icons flash, "8" will flash, then populate display from right to left.
Display
Buzzer
1 beep
Hood Fan HIGH
OR
Key 40
1 beep
Hood Fan Low
OR
Key 41
1 beep
-
Key 25
1 beep
1 beep
If no error
history: GOOD
If error history:
FxEx FxEx..
OR
XXX OR
100-977**
Key 20 or key 35
1 beep
Key 18 or Key 30
1 beep
key 45
1 beep
key 46
1 beep
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