FULL SIZE ELECTRIC CONVECTION OVENS - SERVICE PROCEDURES AND ADJUSTMENTS
Listed below are the parameters and data you should find in the calibration Mode.
| ALTERNATING ON | ||
MENU | DISPLAY | ||
| PARAMETER | DATA | |
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Calibrate | CALY | no | |
(must display no) | |||
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Logic Output Test | LgOt* | 0 | |
(see step 3) | *g displays as a 9 | ||
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Logic Inputs "LI" | LI | 21 | |
(Factory Only) | |||
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Keyboard | HEY | 0 | |
(see step 4) | |||
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Display Test |
| sequence | |
| of | ||
(All segments of | |||
characters | |||
display and the | |||
| in display | ||
LED’s are tested ) |
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| window | ||
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Exit Calibration | Set point temperature is | ||
Mode and return | |||
displayed or if call for heat, | |||
to Operation | |||
dashes | |||
Mode | |||
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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 |
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Up Arrow | 40 | Start/Stop | 4 |
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Down Arrow | 80 | Temp | 20 |
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1/2 menu | 800 | Rack 1 | 10* |
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3/4 menu | 4000 | Rack 2 | 400 |
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5/6 menu | 2 | Rack 3 | 2000 |
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Set | 200 | Rack 4 | 1 |
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Time | 1000 | Rack 5 | 8 |
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Cook & Hold | 8000 |
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*displays 10 momentarily then alternates between Hey and 0. If pressed again, advances to the next test.
Page 27 of 60 |
| F25105 (December 2001) |
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