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Component Testing Procedures
To avoid risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitor
before servicing, unless testing requires power.
Illustration
Controller board
P2
Pin #1
P1
P1 connector used
Pin #1
for touch panel
ribbon
Error Code Table
Usage Test
The Usage Test is used to access Magnetron Hours, Magnetron Cycles and Door Cycles. Use the following
procedure to access the data:
1. Open door.
2. Press and hold pad 3 for five (5) seconds.
NOTE: After five (5) seconds, SErv illuminates in the display.
3. Press pad 1 for Magnetron Hours.
4. Press pad 2 for Magnetron Cycles.
5. Press pad 3 for Door Cycles.
Conditions
Initial Power Up Condition: Apply power to oven with door closed.
Idle Condition:
Standby Condition:
Cook Condition:
16500008
Replaces 16027357
!
WARNING
Component
All Models
Line voltage to control board
P2 connector
Pin 1—Pin 3 ...............................................
Output drive voltage to triac
1
10
Triac terminals .............................................
Gate—T1 ...................................................
208 VAC line voltage
Fan relay (controls blower motor, antenna
motor(s), and oven light)
P1
Control board ...............................................
Terminals C—D .........................................
Line voltage sensing relay (automatically
switches for 208 or 230 VAC operation)
Control board ...............................................
Terminals F—G .........................................
230 VAC line voltage
Fan relay (controls blower motor, antenna
motor(s), and oven light)
Control board ...............................................
Terminals C—E .........................................
Line voltage sensing relay (automatically
switches for 208 or 230 VAC operation)
Control board ...............................................
Terminals F—H .........................................
Error Code
F1
F2
F3
F4
F5
Oven plugged in, display blank (no other components operating).
Open oven door, light and motors operate.
Food load in oven, cook cycle initiated.
Test
Corrective Action
Replace HV/LV Board
Replace HV/LV Board
Replace HV/LV Board
Replace HV/LV Board
Replace Touch Panel
4
Results
Line voltage (All Conditions)
0 VAC (Idle and Standby)
0.9 VAC (Cook)
Line voltage (Idle)
0 VAC (Standby and Cook)
Line voltage (Idle)
0 volts (Standby and Cook)
Line voltage (Idle)
0 VAC (Standby and Cook)
Line voltage (Idle)
0 volts (Standby and Cook)
January 2009
©2009 ACP Inc.
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