Diagnostics For Elements, Temp Sensors, Warming Drawer, Steam Oven, Oven Lights; Element Diagnostics; Safety Practices For Element Diagnostics; Element Diagnostic Tips - Thermador Pro Grand Next Generation PRD48JDSGC/02 Service Manual

Service Manual for the Thermador Pro Grand Next Generation, Dual Fuel Range with Steam Oven, Models: PRD48JDSGC/02, PRD48JDSGU/02
4 DIAGNOSTICS FOR ELEMENTS, TEMP SENSORS,
WARMING DRAWER, STEAM OVEN, OVEN LIGHTS

4.1 Element Diagnostics

Use the Element Cycle/Circuit Specification chart on this page for
troubleshooting all elements.
4.1.1

Safety Practices for Element Diagnostics

Observe all pertinent safety practices such as warnings, cautions and
instructions contained in the Safety Precautions to Know Prior to
Servicing section of this manual (page 7), throughout this manual, and
the Installation Manual. Ensure compliance with all applicable codes.
4.1.2

Element Diagnostic Tips

Wiring Diagram
ü The electrical wiring diagram is located behind the kick panel of
the range (see Wiring Diagram, page 6).
Resistance Reading
ü You can perform a resistance reading on an element with the
electrical power to the range turned off.
Amperage Reading for all Elements:
ü For an element, check either of the wires with an amp meter and
amp clamp.
ü Alternatively, you can check the element from the corresponding
I/O relay terminals on the control board.
ü Alternatively, you can check an element from the hot terminals
(L1, L2) and neutral terminal at the terminal block.
Temperature Reading
Do not remove the thermocouple prematurely when the oven is hot.
58300000163852_ARA_EN_C
ü Use a thermometer with a thermocouple leads to test the oven
temperature. If you leave the thermocouple in the oven during a
speed clean cycle, keep in mind it will take a few hours before the
oven is cool enough if you plan to retrieve the thermocouple.
4.1.3

Element Cycle/Circuit Specification

Cavity Cycle (Element/s)
Large Bake (Bake element)
Large Broil (Broil element)
Convection Bake
Large
(Bake, Broil, and Convection
elements are on during Preheat
mode. Only the Bake element
is on in Active mode, although
Broil element is on 4 seconds
of every minute for browning)
Convection Broil
Large
(Bake, Broil, and Convection
elements are on for both
Preheat and Active modes)
Speed Clean
Large
(Bake, Broil, and Convection
elements are on)
N/A Griddle (Griddle element)
Steam Convection (conv. element)
Steam + Convection
Steam
(convection element)

4.2 Oven Temperature Sensor Diagnostics

With electrical power OFF, you can perform a resistance reading (and
simultaneous temperature reading) to check the warming drawer or
regular oven sensor. The resistance fluctuates according to ambient
(room) temperature.
To avoid injury, it is recommended to wait until the appliance at or
near room temperature before performing resistance and temperature
readings.
Mode Watts Volts Amps
Active 2000 240 8.3
Active 4000 240 16.7
Preheat 8750 240 36.5
Active 2000 240 8.3
Preheat 8750 240 36.5
240 36.5
Active 8750
240 36.5
8750
Active
Active 1600 120 13.3
Active 1800 240 7.5
Active 1800 240 7.5
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Ohms
28.8
14.4
6.6
28.8
6.6
6.6
6.6
9.0
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