TurboChef NGO/SOTA - Fault Code Descriptions and Troubleshooting

TROUBLESHOOTING
31
O
v
erview of Troubleshooting
This section contains information on the
following:
-
F
ault code descriptions
- Fault code troubleshooting
-
N
on-fault code troubleshooting
For information on accessing Test Mode, see page
13. F
or information and illustrations on r
eplacing
components, see the appendix.
Fault Code Descriptions
T
o view the fault log:
1. While the oven is cooling down or off, press
the INFO key to access the I
nfo 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 display
ed when the motor contr
oller
indicates no r
unning status.
The motors and motor contr
oller 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 r
estart the motors. If the restart of both
motors is successful, the fault code will be clear
ed
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: C
ook
Temperature Low
This fault is displayed if the cook cavity
temperature is more than 84
º
F (47
º
C) below the
set temperatur
e 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
84
º
F (47
º
C) of the set temperatur
e or when the
heater is tested in
Test Mode (page 13).
F3: Magnetron Current Low
This fault is display
ed when the current trans-
former (CT
)
on the I/O control board detects less
than 10 amps. The fault is monitored when the
micr
o
wave is on during a cook cycle or in Test
Mode.
The fault is clear
ed fr
om the display at the onset of
a cook cycle if the CT detects 10 amps, or when
the magnetr
ons ar
e successfully energized in Test
Mode.
F4: Door Monitor Defective
This fault is display
ed 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 clear
ed from the
display when the oven is powered off and then
back on.
NO
TE: 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: M
agnetron Over Temperature
This fault is display
ed when either magnetron
thermostat reaches 212
º
F (100
º
C).
The thermostats will reset automatically, and
ar
e wir
ed 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
ex
ceeds 158
º
F (70
º
C).
The EC temperature is
monitor
ed once per minute.
The fault is cleared from the display if on the next
check, the EC thermocouple temperature is below
158
º
F (70
º
C).