Component Testing Procedures
!
WARNI NG
To avoid electrical shock, personal injury, or death: disconnect po wers upply before servicing, unless testing
requires it.
©2003Maytag Applianc es Company 16022159 Rev. 0 11
5N4
16
23
TOP
3. Remove wiring from switch.
4. If any contacts f ail continuity test, replace infinite
switch.
LOAD2
LOAD1
4
6
3
2
L2
L1
GROUND
5N
1
SCHEMATIC
If the infinite switch contacts are good and the element
does not heat, check for voltage at the heating element
terminal plug block. A voltage of 240 V should be
indicated. If no voltage is indicated, check for a broken
wire or loose connection.
Dial Position
Contacts OFF Small Large
3-4 OFF OFF ON
2-3 OFF Cycle Cycle
2 - 5 OFF ON ON
Control
1. Verify power is applied to the input on the control.
2. Verify power is present at the output on the control.
3. If power is not present at input or output of the
control, replace control.
Temperature Sensor
Sensor resistance can be checked by disconnecting the
sensor leads from the control and connecting an
ohmmeter to the sensor. A resistance reading of
approximately 1100 ohms should be indicated at
ambient room temperature (75 F).
If a resistance of 0 ohms or infinite ohms is indicated.
Replace the temperature sensor.
Ribbon Elements−Power Disconnected
Small Element Continuity Test
1. Disconnec t power from cooktop. Connect ohmmeter
leads to element terminals.
2. Meter sh ould indicate continuity.
Large Element Continuity Test
1. Disconnec t power from cooktop. Connect ohmmeter
leads to element terminals.
2. Meter sh ould indicate continuity.
Ribbon Elements−Power Connected
Performance Test
1. Set m eter to measure at least 250 VAC. Connect
meter leads to element tabs.
2. Connect cooktop to power source.
3. Tes t element with no load (no pan on burner), turn
corresponding surface control to HI. Voltage should
indicate240 VAC power supply voltage.
4. Elem ent should glow after a few seconds. If it does
not glow check element resistance or continuity to
high limit/ hot light assembly.
5. W hile element is heating, observe voltage and
element. Voltage should indicate 240 VAC power
supply voltage.
6. After a delay of appr oximately six minute
(±30 seconds), the high limit switch will open its
contacts and turn power off to the element. Observe
two complete cycles prior to setting surface control to
OFF position.
Cooling Fan
Fan motor may come on at anytime to cool components.
1. Turn off power to unit.
2. See “Disassembly Procedures”to access motor.
3. Disconnect terminals to cooling fan.
4. Attach meter leads to terminals on the motor.
5. A resistance of ohms should be indicated
approximately 667 ohms, but may vary with each
motor tested. This test is to check the motor winding
for an open or shorted winding. If zero or infinite
ohms is indicated, the motor windings has failed and
the motor must be replaced.
High Limit Switch
1. Turn off power to unit.
2. See “Disassembly Procedures”to access switch.
3. Disconnect wires from switch terminal connectio ns.
4. Attach meter leads to terminals on the switch. At
ambient room temperature (70 F) , continuity should
be indicated.