6-27
TeST #3b Thermal Fuse Test
eleCTriC Dryer:
The thermal fuse is
wired in series with the dryer drive motor.
GaS Dryer:
The thermal fuse is wired in
series with the dryer gas valve.
all DryerS:
Unplug dryer or disconnect power.
Access the thermal fuse (See page 4-70).
Disconnect wires from thermal fuse. Using
an ohmmeter, check continuity across the
thermal fuse.
• If the ohmmeter indicates an open circuit
(infinite Ω), replace the failed thermal fuse.
TeST #3C High Temp Cutout Test
If the dryer does not produce heat, check the
status of the high temp cutout.
Unplug dryer or disconnect power.
Access the high temp cutout
(See page 4-83).
Using an ohmmeter, check the continuity
across the high temp cutout.
•If the ohmmeter indicates an open circuit
(infinite Ω), replace the failed high temp
cutout and high temp thermostat. In
addition, check for blocked or improper
exhaust system, or failed heat element
(electric dryer).
1.
2.
3.
1.
2.
3.
TeST #3d Gas valve Test, Gas Dryer Only
Unplug dryer or disconnect power.
Access the gas valve (See page 4-84).
Use an ohmmeter to determine if a gas
valve coil has failed. Remove harness
plugs. Measure resistance across terminals.
Readings should match those shown in the
following chart. If not, replace coil.
When replacing the uiC or the CCu:
Unplug dryer or disconnect power.
Replace the machine control electronics.
Reinstall all parts and panels before
operating.
Plug in dryer or reconnect power.
Perform Diagnostic test to verify repair.
1.
2.
•
•
•
•
•
Terminals Resistance
1 to 2
1365
Ω ±
25
1 to 3
560
Ω ±
25
4 to 5
122
0 Ω ± 5
0
IMPORTANT:
Be sure all harness
wires are looped back
through the strain
relief after checking or
replacing coils.
1
2
3
4 5
iMPOrTanT:
Make sure all
harness wires
are looped back
through the strain
relief after checking
or replacing coils.
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