Oven Selector Switch Test
Troubleshooting Guide
5-13
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TESTING THE OVEN RELAY BOARD
Element Testing
First access diagnostic mode. Once in diagnostic mode, the technician can turn the oven control knob bezel to acti-
vate an element. The element relay and the double line breaker(dlb) will close to complete a 240/208 VAC circuit
through a specific element. If the oven controller detects the current running through the closed circuit, the
**
CFH light
will be illuminated.
NOTE:
Diagnostic Mode will end 2 minutes after last key stroke or when the CLEAR key is pressed.
**
Call For Heat
RTD Testing
First access Diagnostic Mode. Once in diagnostic mode, the RTD temperature is shown in display window of tem-
perature control knob. If the RTD is open, “Err 03” will be shown in the display of the electronic control housing. If the
RTD is shorted, “Err 04” will be shown in the display of the electronic control housing.
NOTE:
Diagnostic mode will end 2 minutes after last key stroke or when the ENTER key is pressed.
Probe Testing
First access Diagnostic Mode. Next, press the PROBE key
(this will switch the readout to probe temperature as shown
in the display window of the temperature control knob)
. If the probe has not been inserted, “out” will be shown as the
probe temperature in the display window of the temperature control knob. If the probe is shorted, “Err 09” will be shown
in the display of the electronic control housing.
NOTE:
Diagnostic Mode will end 2 minutes after last key stroke or when the ENTER key is pressed.
Turn Bezel (Cooking Mode)
Relay(s) Activated
Response
Stone
(Use “PROOF” for 18” Cavity)
Clean
Conv
Conv Roast
Conv Broil
Conv Bake
Left Convection Element
Right Convection Element
Bake Stone Element
(must be plugged in)
Inner Bake Element
Broil Element
Outer Bake Element
**
CFH Indicator Light Illuminates
**
CFH Indicator Light Illuminates
**
CFH Indicator Light Illuminates
**
CFH Indicator Light Illuminates
**
CFH Indicator Light Illuminates
**
CFH Indicator Light Illuminates
Switch Position Pin 7
Pin 8
Pin 9 Pin 10
OFF
Conv. Bake
X
Conv. Broil
X
X
Conv. Roast
X
Convection
X
X
Self Clean
X
X
X
Stone
X
X
Roast
X
X
X
Broil
X
X
Bake
X
The chart to the right can be used to verify proper
functionality of the oven selector switch. Use an Ohm
Meter to perform these continuity tests.
The wire harness must be disconnected from the
ECH assembly to prevent inaccurate readings.
As you rotate the switch to the position of the chart
you should find continuity between Pin 6 and the pins
marked with an “X”.
TO AVOID ELECTRICAL SHOCK, POWER TO THE UNIT MUST BE DISCONNECTED BEFORE PERFORMING
THE FOLLOWING TESTS.
Summary of Contents for DF304
Page 2: ......
Page 12: ...D Du ua al l F Fu ue el l R Ra an ng ge e General Information 1 10 ...
Page 62: ...4 22 Component Access Removal D Du ua al l F Fu ue el l R Ra an ng ge e ...
Page 77: ...Technical Data D Du ua al l F Fu ue el l R Ra an ng ge e 6 1 SECTION 6 TECHNICAL DATA ...
Page 81: ...Wiring Diagrams D Du ua al l F Fu ue el l R Ra an ng ge es s 7 1 WIRING DIAGRAMS SECTIO N 7 ...