Service Manual for Thermador Pro Grand Dual Fuel Ranges:
PRD304EG,
PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG
58300000157422_ARA_EN_A
Page 18 of 95
3.7.3 Element Diagnostics
Element Cycle/Circuit Specification
chart for troubleshooting
all elements as well as the hot surface igniter (HSI) for the grill.
3.7.3.1
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
section of this manual (page
throughout this manual, and
the Installation Manual. Ensure compliance with all applicable codes.
3.7.3.2
Element Diagnostic Tips
Wiring Diagram
The electrical wiring diagram is located behind the kick panel of
the range (see
page
Resistance Reading
You can perform a resistance reading on an element with the
electrical power to the range turned off.
Amperage Reading for all Elements and Grill HSI:
For
an
element,
check either of the wires with an amp meter and
amp clamp. For the
grill HSI,
check at one of its wire connectors,
as the gas burner attached to HSI will ignite.
NOTE:
Although the
grill HSI may be glowing, if not enough current is running through
it, the safety valve may fail.
Alternatively, you can check the element and grill HSI from the
corresponding I/O relay terminals on the control board.
Alternatively, you can check an element and grill HSI 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.
Test oven temperature using a thermometer with a thermocouple
lead. 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.
3.7.3.3
Element Cycle/Circuit Specification
Cavity
Cycle (Element/s)
Mode
Watts
Volts
Amps
Ohms
18 inch
Bake (Bake element)
Active
4000
240
16.7
14.4
18 inch
Broil (Broil element)
Active
2600
240
10.8
22.2
30 inch
Bake (Bake element)
Active
6000
240
25.0
43.2
30 inch
Broil (Broil element)
Active
4000
240
16.7
14.4
Preheat 6000 240
25.0 43.2
30 inch
Convection Bake
(Bake and Broil elements are
on during Preheat mode. Bake,
Broil, and Convection elements
are on in active mode, although
Broil is only on for 4 seconds of
every minute for browning)
Active 8750 240 36.5 113.0
Preheat 4750 240
19.8 49.7
30 inch
Convection Broil
(Broil and convection elements)
Active 4750 240 19.8 49.7
30 inch
Speed Clean
(Broil and Bake elements)
Active 6000 240 25.0 43.2
36 inch
Bake (Bake element)
Active
6000
240
25.0
43.2
36 inch
Broil (Broil element)
Active
4000
240
16.7
14.4
Preheat 6000 240
25.0 43.2
36 inch
Convection Bake
(Bake and Broil elements are
on during Preheat mode. Bake,
Broil, and Convection elements
are on in active mode, although
Broil is only on for 4 seconds of
every minute for browning)
Active 8750 240 36.5 113.0
Preheat 4750 240
19.8 49.7
36 inch
Convection Broil
(Broil & convection elements on
for Preheat and active modes)
Active 4750 240 19.8 49.7
36 inch
Speed Clean
(Broil and Bake elements)
Active 6000 240 25.0 43.2
N/A
Griddle (Griddle element)
NOTE:
For specific 36-inch and
48-inch models.
Active 1600 120 13.3 9.0
N/A
Grill Hot Surface Igniter (HSI)
NOTE:
For specific 36-inch and
48-inch models.
Active
120 to
48
120
0.4 to
1.0
300 to
120
