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3. Press Start to accept the temperature change
andthe 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.
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
all the display windows: F1, F3, or F9.
F1 code:
F1 indicates a malfunction in the control itself, and the
control should be replaced.
F3 code:
F3 indicates a defective sensor, electronic oven control
or the wiring in between. To determine which part is
defective:
1. Disconnect the 15 pin plug from the back of the oven
control that connects the sensor to the oven control.
2. With an Ohmmeter measure the resistance between
pins 14 and 15 in the plug (not on the control
board). If the meter reads around value of the oven
temperature sensor resistance chart 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
reading is the same as that in step two the oven
sensor is defective. If the reading is correct with
the chart the harness is defective.
F9 code:
F9 code indicates the control 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 control.
Time bake does not operate:
If the time bake does not operate check to be sure it is
being programmed correctly. If so, replace the control.
Convection bake:
If neither the fan motor or the assist element operate
after the five minute delay when convection bake is
programmed:
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 in 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 broken or both the
fan motor and the element are defective.
If the assist element heats but the fan motor does not
operate when convection bake is programmed, the fan
motor is defective or the fan blade blocked.
If the fan motor operates but the assist element does
not heat when convection bake is programmed, the wiring
between fan and element is defective or the element is
open.
Blank Display:
If the display on the oven control is blank and with the
range connected to electrical power:
81
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Table of Contents
Troubleshooting
