TR
OUBLESHOO
TING
31
Overview of Troubleshooting
This section contains information on the
following:
- Fault code descriptions
- Fault code troubleshooting
- Non-fault code troubleshooting
For information on accessing Test Mode, see page
13. For information and illustrations on replacing
components, see the appendix.
Fault Code Descriptions
To view the fault log:
1. While the oven is cooling down or off, press
the INFO key to access the Info Mode.
2. From Screen 1 of the Info Mode (Figure 12,
page 11), press the R3 soft key to view the
fault log.
3. To view time stamps of each fault occurrence,
press the soft key adjacent to the fault code.
F1: Blower Running Status Bad
This fault is displayed when the motor controller
indicates no running status.
The motors and motor controller are monitored
continuously in all modes with special handling in
the Test Mode (page 13). If a fault is detected, the
control will terminate a cook cycle and display
“F1: Blower.”
Upon turning on the oven, the control will
attempt to restart the motors. If the restart of both
motors is successful, the fault code will be cleared
from the display. The fault is also cleared from the
display at the onset of cooking or when a blower
motor is tested in Test Mode.
F2: Cook Temperature Low
This fault is displayed if the cook cavity
temperature is more than 84ºF (47ºC) below the
set temperature after five seconds into a cook cycle.
The fault is cleared from the display at the onset of
cooking if the cook cavity temperature is within
84ºF (47ºC) of the set temperature or when the
heater is tested in Test Mode (page 13).
F3: Magnetron Current Low
This fault is displayed when the current trans-
former (CT) on the I/O control board detects less
than 10 amps. The fault is monitored when the
microwave is on during a cook cycle or in Test
Mode.
The fault is cleared from the display at the onset of
a cook cycle if the CT detects 10 amps, or when
the magnetrons are successfully energized in Test
Mode.
F4: Door Monitor Defective
This fault is displayed when the control detects
that the monitor interlock switch unlatches before
the primary or secondary interlock switches. In
addition, this fault will blow the F3 fuse if the
microwave high voltage system is energized when
the fault occurs. The fault is cleared from the
display when the oven is powered off and then
back on.
NOTE: Door interlock switches are in parallel.
See the oven schematic, page 45. The fault is
monitored during a cook cycle and in Test Mode
when the microwave is on.
F5: Magnetron Over Temperature
This fault is displayed when either magnetron
thermostat reaches 212ºF (100ºC).
The thermostats will reset automatically, and
are wired in series. The fault is cleared from the
display at the onset of a cook cycle if the thermo-
stat is closed.
F6: Electrical Compartment Temperature High
This fault is displayed when the EC thermocouple
exceeds 158ºF (70ºC). The EC temperature is
monitored once per minute.
The fault is cleared from the display if on the next
check, the EC thermocouple temperature is below
158ºF (70ºC).
Summary of Contents for SOTA NGO
Page 3: ......
Page 4: ...For further information call 800 90TURBO or 1 214 379 6000 ...
Page 12: ...Specifications and Installation ...
Page 13: ......
Page 18: ...Daily Maintenance ...
Page 19: ......
Page 22: ...Oven Controls and Cooking ...
Page 23: ......
Page 28: ...Info Test and Edit Mode ...
Page 29: ......
Page 38: ...Oven Systems ...
Page 39: ......
Page 52: ...Troubleshooting ...
Page 53: ......
Page 68: ...Oven Schematic ...
Page 69: ......
Page 71: ...46 This page intentionally left blank OVEN SCHEMATIC ...
Page 72: ...Appendix Replacing Oven Components ...
Page 73: ......