Rtd Sensor; Rtd Characteristics; Iris Spark Module Test - Viking vdsc530t Service Manual

Service Diagnostics and Procedures
Control Board Diagnosis

RTD Sensor

Locate the P15 connector on control board. The
P15 connector will have a Molex plug containing a
gray and violet wire. The gray and violet wires go to
the oven sensor.
P-15
With the Molex plug removed, use an Ohm meter
to measure resistance between the gray and violet
wires in the Molex connector. At room temperature
the reading should be approximately 1050 – 1100
If no or infinite resistance is read, verify sensor wiring
is connected completely through circuit. If wiring is
OK, replace the sensor.

RTD Characteristics

RTD (Resistance Temperature Detector)
Temperature (˚F)
50
75
100
200
300
350
400
450
500
550
600
650
700
750
800
850
900
Note: Door switch must be depressed in order for
the Convection Fan and all convection cycles, Auto
Roast and Dehydrate heating elements to operate
when the door is opened.
© 2010 Viking Preferred Service
P-15
Ω
Resistance (Approximate)
1038
1090
1143
1350
1553
1654
1754
1852
1950
2047
2153
2238
2332
2425
2318
2609
2700

IRIS Spark Module Test

(Surface Burner Igniter will not spark)
To check the spark module perform the following:
1. Check for any debris/build up around the
igniter and operate the burner again.
2. Disconnect power and remove the landing
ledge (see procedure for control panel
disassembly).
3. Disconnect the wire harness from the suspect
spark module.
4. Reconnect power and test for 120 VAC from
black to white.
5. If no power is present, check wiring. If power is
present, disconnect power and reconnect wire
harness.
6. Disconnect black wire from the spark module
and check for 0
the tip of spark electrode.
8. If infinite resistance is found, remove the
burner base and unplug the electrode. Check
the electrode terminal to tip. If infinite ohms,
replace the burner base assembly.
. 9. Test the wire between the module and ignitor.
Replace if defective. Replace electrode and
replace wire.
10. If 120 volts are present at the module and the
ignition system tests good, replace the spark
module.
between the black wire and
Ω
47