Residential Single and Double Wall Oven Service Manual

TROUBLESHOOTING
6.1
Overview of Troubleshooting
 is section contains information pertinent to
troubleshooting issues with the TurboChef
®
Residential Double Wall or Single Wall ovens.
It is divided into two main sections:
- Error Screens
- Component Testing and Troubleshooting
Within these sections, some procedures are relevant
only to specifi c oven models.
 e variables are:
- Double Wall Oven: If the procedure is specifi c
to a double-wall oven, it will be in regards to the
lower oven, as the top oven is functionally
identical to the single-wall oven.
- Single Wall Oven: No procedure will be specifi c
only to a single wall oven, as it is functionally
identical to the top oven of the double-wall.
- Gen 1:  e procedure will apply only to ovens
with a serial number mask of TDO######.
Note that all single-wall ovens are Gen 2.
- Gen 2:  e procedure will apply only to ovens
with a serial number mask of TDO2D######
or TSO2D######.
- No designation: If there is no designation on a
procedure, then it applies to all oven types and
confi gurations.
For more information on part descriptions and
functions, see Section 5: Oven Systems. For
information on removing parts, see the Appendix.
Error Screens
Below are the descriptions and possible causes of the
diff erent error screens:
- Oven Door Open (Gen 1)
- Oven Door Open (Gen 2)
- Cooling Fan Failure (Gen 1)
- Cooling Fan Failure (Gen 2)
- Temperature Control Failure
- Magnetron Failure
- Blower Failure
- Oven Over Temperature
Oven Door Open (Gen 1)
When the door is closed, two cams are rotated by
the door’s actuators to close the left and right
interlock N.O. switches.  ese switches are wired
in series between P7-5 and P8-5 on the control
board to monitor the door’s position. If this circuit
is broken during the preheat or cooking cycle, or if
the monitor switch, P7-15 and P8-4, fails, this error
screen is displayed.
Possible causes:
-  e door is open
-  e door switch assemblies require adjustment
- Faulty left and/or right lock motor assembly
-  e switch is not closing because the left and/
or right lock motor assembly has not been
installed correctly
- Faulty wiring
- Faulty control board
- Failed monitor switch
Possible components to be replaced:
- Left lock motor assembly
- Right lock motor assembly
Troubleshooting:
1. Verify whether the door is fully closed.
2. Verify the hinges on the door have been fully
inserted (see page 5.2).
3. Test pins P8-4 and P7-15 for continuity through
the monitor switch.
4. Check to see if the hinges or actuators are bent.
5. Check to see if one of the door cams are over-
rotated, if so, correct or replace it.
6. Adjust the door switches.
Note: Figure 6.1 shows the adjustable version of
the door switch assembly. Older versions were not
adjustable. If an oven has un-adjustable switch
assemblies, contact TurboChef to order the
adjustable door switch assemblies.
- Remove the door switch covers, located on
the right and left side of the Speedcook
oven.
- Mark the original position of the
adjustment slide for reference.