TECH SHEET - DO NOT DISCARD
PAGE 3
FOR SERVICE TECHNICIAN'S USE ONLY
PART NO. 3979101
3.
Check the voltage at the Timer (reference
Neutral):
a.
At Timer BK voltage should be 120VAC.
If not, check the input voltage line (L1).
b.
If voltage is okay at BK, check Timer
voltage at BU. If voltage is not 120VAC,
replace the Timer.
4.
Check for 120VAC at the PTS switch and
Motor Relay. 120VAC (reference Neutral)
should be present at:
■
one side of the PTS switch
■
one side of the Motor Relay contacts
(large terminals)
If 120VAC is not present at these locations,
check the harness connections. If harness
connections are good, go to Step 5.
5.
Press and hold the PUSH TO START
switch.
a.
Check the voltage at the PTS switch. If
120VAC is not present at both terminals,
replace PTS switch.
b.
Check the voltage at the Motor Relay:
Both sides of the Motor Relay contacts
(large terminals) should be 120VAC with
reference to Neutral.
If 120VAC is not present at one of the
Motor Relay contacts, then check for
48VDC from P2-7 to P3-2. If 48VDC is
correctly shown, replace the Motor Re-
lay. If not 48VDC, then replace the Even
Heat Control Assembly.
6.
If the motor does not start, check the Door
switch (D to D1). There should be continu-
ity when the door is closed. If not, replace
the Door switch.
7.
Press the PUSH TO START switch. If the
motor starts but does not continue to run,
replace the Even Heat Control Assembly.
8.
Press and hold the PUSH TO START
switch. If motor does not start, replace the
motor.
PROBLEM: Dryer Will Not Heat
(Refer to Heater Strip Circuit, page 6)
If the heat will not turn on, check the following:
–
LINE VOLTAGE (240V)
–
HARNESS/CONNECTION
–
HEATER RELAY
–
THERMAL CUT-OFF
–
HIGH LIMIT THERMOSTAT
–
HEATER
– CENTRIFUGAL SWITCH
– THERMISTOR
–
EVEN HEAT CONTROL
IMPORTANT:
Electrostatic (static
electricity) discharge may cause dam-
age to electronic control assemblies.
See page 1 for details.
Procedure:
1.
Set the following configuration:
■
Door - must be closed
■
Fabric Care/Temperature switch -
COTTON / TOWELS
■
Timer - TIMED DRY
2.
Press the PUSH TO START switch. The
dryer will start, and the heater will take sev-
eral seconds to turn on.
3.
Check the voltage at the Heater Relay:
■
P3-1 to P3-2 should be 48VDC
■
COM to NO should be ~0VAC
a.
If the voltage is 48VDC at the P3-1 to
P3-2 terminals, and ~240VAC at the
COM and NO terminals, replace the
Relay.
b.
If the voltage is 0VDC at the P3-1 to P3-2
terminals, replace the thermistor.
c.
If, after replacing the thermistor, the volt-
age is still 0VDC at the P3-1 to P3-2 ter-
minals, replace the Even Heat Control
Assembly.
PROBLEM: Dryer Heats During
Air Fluff/No Heat Cycle
(Refer to Heater Strip Circuit, page 6)
If the dryer heats when the Fabric Care/Tem-
perature switch is set to AIR FLUFF (No Heat),
check the following:
– HARNESS/CONNECTION
– HEATER RELAY
– FABRIC CARE SWITCH
– EVEN HEAT CONTROL
IMPORTANT:
Electrostatic (static
electricity) discharge may cause dam-
age to electronic control assemblies.
See page 1 for details.
Procedure:
1.
Perform the Fabric Care/Temperature Switch
Test on page 2.
2.
Set the following configuration:
■
Door - must be closed
■
Fabric Care/Temperature switch - AIR
FLUFF
■
Timer - TIMED DRY
3.
Press the PUSH TO START switch.
a.
Check voltage on Heater Relay. If P3-1
to P3-2 is 0VDC, replace the Heater Re-
lay.
b.
If P3-1 to P3-2 is 48VDC, replace the
Even Heat Control Assembly.
PROBLEM: Dryer Won’t Shut
Off
(Refer to Motor and Moisture
Sensor Strip Circuits, page 6)
If the dryer will not shut off, check the following:
–
PUSH TO START (PTS) SWITCH
–
HARNESS/CONNECTION
–
MOTOR RELAY
– MOISTURE SENSOR
– EVEN HEAT CONTROL
IMPORTANT:
Electrostatic (static
electricity) discharge may cause dam-
age to electronic control assemblies.
See page 1 for details.
Procedure:
1.
Set the Timer to OFF. If the dryer starts run-
ning as soon as it is plugged in, replace the
Timer.
2.
Set the following configuration:
■
Dryer - power cord plugged in
■
Door - must be closed
■
Fabric Care/Temperature switch -
COTTON / TOWELS
■
Timer - TIMED DRY for less than 10
minutes
3.
If the dryer starts running before the PUSH
TO START switch is pressed, replace the
PTS switch.
4.
If, after replacing the PTS switch, the dryer
still starts before the PUSH TO START
switch is pressed, replace the Motor Relay.
5.
If the dryer does not stop after the set time
elapses, check the Motor Relay.
a.
If the voltage is 0VAC at COM to NO,
replace the Motor Relay.
b.
If the voltage is 120VAC at COM to NO,
replace the Even Heat Control Assembly.
6.
If the dryer will not terminate its cycle when
set to AUTO MOISTURE SENSING PLUS,
check the Moisture Sensor.
a.
If there is continuity to Ground for Yellow/
Red (Y/R) wire with no load, look for a
short in the Sensor or Y/R wire. Verify
harness connections both at the Sensor
and the Even Heat control.
b.
If the Sensor and Y/R wire are good, re-
place the Even Heat Control Assembly.
PROBLEM: Dryer Shuts Off
Before Clothes Are Dry
(Refer to Thermistor Test, page 2, and
Moisture Sensor Strip Circuit, page 6)
If the dryer shuts off too soon when set to the
AUTO MOISTURE SENSING PLUS cycle,
check the following:
– HARNESS/CONNECTION
– MOISTURE SENSOR
– THERMISTOR
– EVEN HEAT CONTROL
IMPORTANT:
Electrostatic (static
electricity) discharge may cause dam-
age to electronic control assemblies.
See page 1 for details.
Procedure:
1.
Test the Moisture Sensor by following the
procedure outlined in “Factory Test”, begin-
ning on page 1. If the Moisture Sensor fails
the “Factory Test” (does not produce a
beep sound), check the Moisture Sensor.
a.
If there is continuity to Ground for Yel-
low/Red (Y/R) wire with no load, look for
a short in the Sensor or Y/R wire. Verify
harness connections both at the Sensor
and the Even Heat control.
b.
If the Sensor and Y/R wire are good, re-
place the Even Heat Control Assembly.
