
TurboChef Technologies, Inc. C Series 
4-2 
Introduction  Fault Code Introduction: The C3C oven has the ability to continually 
monitor and log various fault conditions.  Some 
fault conditions will terminate cook cycles, while 
others will not. Please refer to Table 4-1 for fault 
codes:  
The Codes are listed in order of hierarchy.  For 
example:  If during cooking the oven experiences 
an F1 and F2 fault, the oven will only report a F1 
fault since the software will halt all actions upon 
discovering the F1 fault. 
In addition if a fault is detected the fault counter 
will increment.  If the fault is cleared the fault 
counter will not de-increment.   
View Fault Codes To view the Fault Log, press the “4” and “6” keys 
simultaneously in the Off State.  The oven will 
display all logged faults.  See Figure 4-1.       
Each Fault Register will log up 255 instances 
before rolling back to zero.  The Cook Count will 
log up to 65,535 Cook Cycles.   Note:  In order 
for the Control to log a Cook Cycle, the oven 
must complete the 1
st
 Event of any given recipe.  
If a Recipe only has 1 Event, the oven must 
complete the entire Cook Cycle in order to count 
the Cook Cycle.   
Note: To reset Fault Counter, Press the “0” key.   
 LOW MAG CURR (HV BREAKDOWN) or F3 
MAG CURR – the magnetron transformer is 
drawing less than 7 amps. The normal current 
draw is approximately 9 amps. The current draw 
is being monitored by the control board which 
has a current transformer mounted on it. See 
section 6 
LOW  COOK  TEMP or  F2  LOW  TEMP–  the 
temperature set  for the  C3 SERIES  is not  being 
maintained  within 84
o
F (4 6
o
C) diff erential of  the 
Cook Cham ber Setpoint.  It is  referenced  by the 
cook  chamber  type  K  thermocouple.   N ote:   It 
may  also  be  controlled  by  the  heat  exchanger 
thermocouple. See section 5 
MAG OVER  TMP or F5  MAG  TEMP– the snap 
disk on  the  magnetron has  overheated  and has 
tripped. Reference Chpt. 9 
BLOWER  STATUS  or  F1  BLOWER  –  The 
control bo ard is  not  receiving the  proper  output 
from  the  convection  (blower)  motor  speed 
control. Reference Chpt. 8 
ELEC  OVR  TMP  (EC  TMP  HIGH)  or  F6  EC 
TEMP  –  The  electronics  compartment 
thermocouple connected to the  control board has 
detected  a  temperature  above  140ºF  (60ºC). 
Reference Chpt. 6 
OVEN  DOOR  OPEN –  (during  cook  cycle)  the 
cooking  door  has  been  opened  during  a  c ook 
cycle and has not been closed properly.  
DOOR  MONITOR  or  F4  MONITOR:  --  The 
control  board  senses  that  the  Co ok  Door 
Monitor  Switch  is  out-of-sequence  with  the 
Primary  and/or  Secondary  Door  Sw itches.  
Reference Chpt. 7 
HX RISE  LOW  -  HX (Heater)  Temperature  has 
failed  to  rise  14ºF (~8ºC) F  in  30  seconds. 
Reference Chpt. 8 
NOTE: Some  error codes  may be  different or 
no longer  available  or current.  The  following 
list  details  all  error  codes  created  since 
C3/AB,  C3/C,  C3CMulti  and  C3/AB-Multi  no 
exceptions.
    F1  BLOWER
    F2LOWTEMP
    F3 MAG CURR
    F4 MONITOR
    F5 MAG TEMP
    F6 EC TEMP
TEST C3AD_V
CC
XX
˚
F     HX XX
˚
F
COOK FAULTS 
0
0
0
0
0
0
Figure 4
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