TurboChef Technologies Residential Single and Double Wall Oven - Manual (Page 66)

6.2 TROUBLESHOOTING
- With the door fully closed, loosen the door
switch’s adjustment screw(s).
- With a screwdriver, adjust the switches at
the triangle adjustment slot.
- When the door open message disappears,
move the slide an additional 1/32 in (.8
mm) and tighten the adjustment screw(s).
- Open and close the door to ensure that the
open door message appears only when the
door is open.
NOTE: If switches were adjusted or replaced, you
must perform a microwave leakage test (see page 5.4).
7. If adjusting the switches does not remove the
Door Open message, verify the switches are
operating correctly. If not, replace the faulty
switch(es). If they are, replace the control board.
Oven Door Open (Gen 2)
When the door is closed, the two cams in the switch
assemblies are rotated by the door actuators. Th
ese
cams then actuate the door sensing switches. Th ese
switches are wired independently to the control
board; the left J15-7 and J15-8 and the right J15-9
and J15-10. If either switch is open, the error screen
is displayed.
Th e monitor switch can also cause this error message;
check pins J15-6 and J15-5 for continuity. All other
causes are covered in the Gen 1 listing, above.
Cooling Fan Failure (Gen 1)
A motion sensor on each of the two cooling fans sends
voltage pulses of 5 VDC to the control board. Th
ese
pulses are created when a magnet on the
cooling fan oscillates around the sensor. If one of the
fans is not spinning for any reason, its magnet will not
oscillate and the fan’s motion sensor will not operate,
causing this error screen to be displayed.
Possible causes:
- Loose wire connection
- Faulty cooling motor
- Faulty motion sensor
- Faulty CookWheel mechanical switch
Possible components to be replaced:
- Cooling motor assembly
See pages 6.7-6.9 for further troubleshooting.
Cooling Fan Failure (Gen 2)
Th e Gen 2 oven upper cooling fan is identical to the
one in the Gen 1 oven; however, the single wall oven
also includes a sail switch near the bottom exhaust fan
to check fan operation. If this switch fails to close, an
error will be displayed. All other causes are covered
in Gen 1 listing, above. See pages 6.7-6.9 for further
troubleshooting.
Temperature Control Failure
Th e control board monitors cook cavity temperature
with the use of one RTD in each oven. If the control
board loses communication with an RTD, this error
screen is displayed. See page 6.6 for the RTD testing
procedure.
Possible causes:
- Faulty wiring/loose connections
- Faulty upper or lower RTD
- Faulty control board.
Possible components to be replaced:
- RTD (upper or lower oven - both should
be
tested)
- Control board
Adjustment Screw Adjustment Slot
Figure 6.1: Door Switch Assembly