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Component Testing Information
To avoid risk of electrical shock, personal injury, or death, disconnect power to dryer before servicing,
unless testing requires it.
Illustration
Thermal fuse
Pink / White
Thermostat cycling
S.P.D.T. − 3 terminals
Orange
Thermostat limit
S.P.D.T. − 3 terminals
Thermostat heater
Door switch
Rocker switch
(Extended Tumble)
Temperature switch
Timer
16023153 Rev. 0
!
Component
Measure resistance of thermal fuse from
terminal to terminal.
Open at 360° ± 12° F (182° ± 7° C)....
Auto reset −31° F (−35° C)
Measure resistance of the following terminals:
Terminals 1 − 3...............................
Heat thermostat with a small flame until a
distinct click is heard.
Terminals 1 − 2...............................
Measure resistance of the following terminals:
Terminals 1 − 3...............................
Heat thermostat with a small flame until a
distinct click is heard.
Terminals 1 − 2...............................
Disconnect wire terminals and measure
resistance of terminals.
Terminal to terminal ..........................
Measure resistance of the switch:
Door closed
1 − COM
Terminals 1 − 3...............................
2 − N.C.
Door opened
Terminals 1 − 2...............................
3 − N.O.
Measure resistance of switch positions:
ON
OFF (Open position) ......................
Disconnect wires from component. Measure
4 position
resistance of the switch in the following
positions:
Verify input and output voltage is present.
WARNING
Test Procedure
(Closed position) ....................
2
Results
If thermal fuse is open, both
thermal fuse and thermostat limit
must be replaced.
< 1 Ω
Continuity
Open at 153° ± 5° F
Close at 138° ± 5° F
< 1 Ω
Continuity
< 1 Ω
Continuity
Open at 225° ± 7° F
Close at 185° ± 9° F
< 1 Ω
Continuity
< 1 Ω
Continuity
2400 ± 240 Ω
< 1 Ω
Continuity
< 1 Ω
Continuity
< 1 Ω
Continuity
Infinite
> 1 MΩ
Infinite
> 1 MΩ
< 1 Ω
Continuity
< 1 Ω
Continuity
< 1 Ω
Continuity
< 1 Ω
Continuity
Refer to specific model
Technical Sheet for timing
sequence chart and functional
description of the component.
June 2004
© 2004 Maytag Services
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