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FULL SIZE ELECTRIC CONVECTION OVENS - SERVICE PROCEDURES AND ADJUSTMENTS
F25105 (December 2001)Page 27 of 60
Listed below are the parameters and data you
should find in the calibration Mode.
MENU
ALTERNATING ON
DISPLAY
PARAMETER DATA
Calibrate
(must display no
)
CALY no
Logic Output Test
(see step 3)
LgOt*
*g displays as a 9
0
Logic Inputs "LI"
(Factory Only)
LI 21
Keyboard
(see step 4)
HEY 0
Display Test
(All segments of
display and the
LED’s are tested )
---
sequence
of
characters
in display
window
Exit Calibration
Mode and return
to Operation
Mode
Set point temperature is
displayed or if call for heat,
dashes (----) displayed.
NOTE:
While in the calibration mode, on all
parameters except the Logic Output Test (LgOt), the
control outputs will be OFF.
• To change the programmed data, use the arrow
keys.
• To select the next parameter, press the Rack 1
key.
• At the end of the test, the control automatically
exits the Calibration Mode and returns to the
Operation Mode.
• After 1 minute of no key activations, the control
will return to operation mode.
1. Use this key sequence to access the calibration
mode.
Up arrow; Down arrow; Rack 1; Down arrow;
Temperature; Rack 1
2. Once in the calibration mode the display will
alternate between the parameter and
programmed data. The computer control
outputs are turned OFF.
A. Convection fan stops.
B. Heating stops.
NOTE:
If the control was calling for heat when
the calibration mode was entered, heating will
resume after exiting the test mode.
3. Press the Rack 1 key to accept the default "no"
under the "CALY" (calibrate) parameter and
advance the display menu to the "LgOt" (logic
output) test. In this mode, the control and logic
outputs can be turned ON for testing only.
A. Use the arrow keys to change the display
to the appropriate number for testing.
Each test starts automatically, several
seconds after number is selected.
1) #0 - All control outputs are OFF
(fan & heat OFF).
#1 - Heat comes ON
(2CON is energized).
#5 - Convection fan comes ON
(High or Low speed SSR is
energized).
#8 - Electronic beeper (external)
sounds.
B. If the output tests are completed
successfully, proceed to step 4.
C. If the output tests are not
completed
successfully, find the source of the
problem. If the problem cannot be
repaired, replace the component and
check for proper operation.
4. Press the Rack 1 key twice to advance past the
"LI" (Logic Inputs test) and reach the "HEY
(keyboard) test.
A. Press the desired key to display the
corresponding hexadecimal code. This
code is used internally by the control to
identify the key being pressed. See table
below.
KEY CODE KEY CODE
Up Arrow 40 Start/Stop 4
Down Arrow 80 Temp 20
1/2 menu 800 Rack 1 10*
3/4 menu 4000 Rack 2 400
5/6 menu 2 Rack 3 2000
Set 200 Rack 4 1
Time 1000 Rack 5 8
Cook & Hold 8000
*displays 10 momentarily then alternates
between Hey and 0. If pressed again, advances
to the next test.