Jenn-Air JDS8850BD Service Manual page 17

Testing Procedures
To avoid risk of electrical shock, personal injury or death; disconnect power and gas to range before servicing,
unless testing requires power and/or gas.
Illustration
E-burner assembly
(JDS986*BD*)
E-burner ignitor
(JDS986*BD*)
E-burner tube, front
(JDS986*BD*)
E-burner tube, rear
(JDS986*BD*)
Hidden bake
(JDS8850BD*)
element
Broil element
Bake element
(JDS986*BD*)
Warmer element
(JDS8850BD*)
Convection element
Convection motor,
2-speed
Oven limit switch
(JDS8850BD*)
Oven limit switch
(JDS986*BD*)
Hi-limit temperature
(JDS8850BD*)
switch
(Warming Drawer)
Hi-limit temperature
(JDS8850BD*)
switch
(Warming Drawer)
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Component
Verify gas is supplied ................................. Gas supplied,
Test for resistance of spark lead ................
Test ignitor to chassis.................................
Nominal air shutter setting..........................
Tolerance ...................................................
Nominal air shutter setting..........................
Tolerance ...................................................
Disconnect wiring to element and
measure cold resistance of terminals. .......
Measure voltage at bake element..............
Disconnect wiring to element and
measure cold resistance of terminals. ........
Measure voltage at broil element ...............
Disconnect wiring to element and
measure cold resistance of terminals. ........
Measure voltage at bake element...............
Disconnect wiring to element and
measure cold resistance of terminals. .......
Measure voltage at broil element ..............
Disconnect wiring to element and
measure cold resistance of terminals. .......
Measure voltage at convect element.........
Measure voltage........................................
Check motor windings to ground ...............
Normally closed, verify operation:
Open: 209° to 221° F (98° to 105° C) ......
Closed: 144° to 166° F (62° to 74° C) .....
Normally closed, verify operation:
Open: 253° to 267° F (123° to 131° C) ....
Closed: 188° to 212° F (87° to 100° C) ...
Normally closed, verify operation:
Open: 135° to 145° F (57° to 63° C) ........
Closed: 114° to 126° F (46° to 52° C) .....
Normally closed, verify operation:
Open: 95° to 105° F (35° to 41° C) ..........
Closed: 79° to 91° F (26° to 33° C) .........
WARNING
Test Procedure
16026929
Results
Check for obstructions in burner ports.
Continuity.
No continuity from ignitor to chassis.
.250 1/4"
.031 Approx. 1/32"
.250 1/4"
.031 Approx. 1/32"
Approx. 20 Ω.
240 VAC.
Approx. 12.5 to 18 Ω.
240 VAC.
Approx. 22 Ω.
240 VAC.
Approx. 12.5 to 18 Ω.
120 VAC.
Approx. 16.5 Ω.
240 VAC.
120 VAC. (tolerance: 105 to 135 VAC)
No continuity.
RPM, Lo-speed: Approx. 1440 to 2040
RPM, Hi-speed: Approx. 1860 to 2460
Infinite.
Continuity.
Infinite.
Continuity.
Infinite.
Continuity.
Infinite.
Continuity.
17