RE220002 Rev. 6`
34
Troubleshooting Procedures
To avoid risk of electrical shock, personal injury, or death,
disconnect power to unit and discharge the capacitor
before following any disassembly procedures.
WARNING
!
Diagnosis for VEND-10.F, .G
Test Sequence 6: Cook Condition
Place a cup of water in oven and close oven door.
1.
Inoperative controller.
Cavity light is on?
No
2.
Broken or improper wire connection.
Yes
1.
Button one programmed for zero time.
2.
Door not completely latched.
Push button number one, the controller beeps and the
display starts counting down?
No
3.
4.
5.
Inoperative touch panel.
Inoperative controller.
Inoperative or misadjusted door interlock switch module (Logic
Test).
Yes
6.
Broken or improper wire connection.
Display counts down to zero, and the controller
beeps, and display shows
No
1.
Inoperative controller.
"DONE".
Yes
Heats very slowly
NOTE: Verify by performing power test
Open oven door.
1.
Line voltage less than 110 volts.
2.
Inoperative magnetron
Water placed in the oven is heated?
No
No heat
NOTE: Due to short time periods programmed into
the controller, the temperature rise of
NOTE: Perform isolation test.
the water may be slight.
1.
2.
Inoperative controller.
Inoperative power transformer.
Yes
3.
4.
5.
6.
7.
8.
Inoperative diode.
Inoperative capacitor.
Inoperative magnetron.
Inoperative or misadjusted interlock switch module (Primary
and Secondary Test).
Inoperative triac.
Broken or improper wire connection.
Close oven door and test all timer buttons as follows:
Push button number two and observe display
countdown. Interrupt countdown by opening and
closing door.
Test next button.
1.
Zero time programmed for the button.
All button initiate timer countdown?
No
2.
Door not completely latched.
3.
Inoperative touch panel.
Yes
4.
Inoperative controller.
Cook operation normal.
Proceed to vari-power condition
(Test Sequence 7).