TurboChef ngo Service Manual page 42

32 TROUBLESHOOTING
F7: RTD Open
This fault is displayed when the control detects that
the RTD is "open." The display will show a reading
of "999 º F/C," indicating the RTD is open.
The fault is cleared when the control detects
continuity.
F8: Heat Low
This fault displays when the oven is warming up or
during Test Mode if the cook cavity temperature
fails to rise at least 14 º F (7 º C) within a given 30
seconds.
Fault Code and Description
F1: Blower Running Status Bad
F2: Cook Temperature Low
F3: Magnetron Current Low
F4: Door Monitor Defective
F5: Magnetron Over Temperature
F6: EC Temperature High
F7: RTD Open
F8: Heat Low
F9: Cook Cavity Temperature High
Figure 35: Fault Code Table
Fault codes are listed in order of hierarchy. For example, if during cooking the oven experiences an F1
and F2 fault, the oven will report only the F1 fault because the software will halt all actions upon
discovering the F1 fault.
Fault codes F1 - F5 and F7 will terminate a cook cycle upon discovery.
F9: Cook Cavity Temperature High
This fault will signal that the catalyst has "flashed"
due to excessive grease. The fault occurs when the
RTD senses +650°F (343°C) for more than 40
seconds but less than 2 minutes. The fault will only
appear in the fault log and will not terminate a cook
cycle upon discovery.
When Active
Warmup Idle Cooking Test Mode
Refer to...
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