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the display will return to the time of day. Press Clear
Off to reject the change if necessary.
To adjust the oven temperature lower:
1. Press the Bake pad for 6 seconds. "0" will appear
in the display.
2. To decrease the temperature, use the number pads
to enter the desired change and then press Clean.
The temperature may be decreased up to 35° F.
(NOTE: Pressing CLEAN allows the entry of negative
degree change.)
3. Press Start to accept the temperature change and
the display will return to the time of day. Press Clear
Off to reject the change if necessary.
Troubleshooting:
The ES 450 has some self diagnostics built into the
microprocessor to help in troubleshooting the system.
When a failure occurs one of three codes will appear in
the display window: F1, F3 or F9.
F1 code:
An F1 indicates a malfunction in the EOC itself, and the
control should be replaced.
F3 code:
An F3 indicates a defective sensor, electronic oven
control or the wiring in between. To determine which
part is defective:
1. Disconnect the Fifteen pin plug from the back of the
EOC that connects the sensor to the oven control.
2. With an Ohmmeter measure the resistance between
pins14 and 15 in the plug (not on the EOC). If the
meter reads around the value of the oven temperature
sensor resistance chart shown below, the oven
control is defective. If the meter reads less than 800
Ohms, or more than 3000 Ohms, go to step 3.
RTD
Temperature
(°F)
32 ± 1.9
75 ± 2.5
250 ± 4.4
350 ± 5.4
450 ± 6.9
550 ± 8.2
650 ± 9.6
900 ± 13.6
SCALE
Resistance
(ohms)
1000 ± 4.0
1091 ± 5.3
1453 ± 8.9
1654 ± 10.8
1852 ± 13.5
2047 ± 15.8
2237 ± 18.5
2697 ± 24.4
3. Disconnect the harness from the oven sensor and
measure the resistance of the oven sensor. If the
meter reads less than 800 Ohms, or more than 3000
Ohms, the oven sensor is defective. If the reading
is correct with the chart the harness is defective.
F9 code:
An F9 code indicates the EOC has detected a problem
with the motor door latch assembly. Check the contacts
of the lock switch, wiring to the lock motor assembly,
and the lock motor.
Control will not program:
If the control will not program, check for an open sensor
circuit. If the sensor circuit is good, replace the EOC.
Time bake does not operate:
If the time bake feature does not operate, check to be
sure it is being programmed correctly. If it is being
programmed correctly, then replace the control.
Convection bake:
Neither the fan motor or the assist element operates:
1. Remove power from range. Go to the back of
the electronic oven control and disconnect the
15 pin plug. With the oven door closed, measure
the resistance between pins 10 and 12 of the 15 pin
plug (in the plug). If the meter reads open, check
the door switch and the wiring from the electronic
oven control to the door switch. If the meter reads
zero go to step 2.
2. Measure the resistance between pins 5 and 7. If
the meter reads around 10 Ohms the control is
defective. If the meter reads infinity either the wiring
to the fan motor and element is open or both the
fan motor and the element are defective.
Fan motor does not operate:
1. If the assist element is heating then the fan motor
itself or the wiring to the fan motor is defective. Also
check for a blocked fan blade.
Assist element does not operate:
1. If the convection fan is operating then the element
itself or the wiring to the element is defective.
Control does not operate in preheat:
1. If the oven operates in bake but not preheat, the
EOC is defective.
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Table of Contents
Troubleshooting
