Maytag MLE20PDAYW0, Руководство по обслуживанию

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6-25
Dryer does not heat:
eleCTriC Dryer:
Unplug dryer or disconnect power.
Remove the control panel bracket to access
the thermal components. (See page 4-10).
Using an ohmmeter and referring to the
wiring diagram, measure the resistance
from the red wire at the high temp cutout to
the red wire at the heater.
• If the resistance is about 10Ω, go to
step 5.
• If an open circuit
(infinite Ω)
is detected, go
to step 4.
Visually Check the wire connections to the
high temp cutout, high temp thermostat,
and heater. If connections look good,
check for continuity across each of these
components. Replace the heater if it is
electrically open. Replace both the high
temp cutout and high temp thermostat if
either one is electrically open.
If no open circuit
(infinite Ω)
is detected,
measure resistance at CCU between P14-3
(red-white wire) and P14-6 (red-white wire)
at Dryer CCU control board.
(See page 4-54).
• If 5 - 15 Ω
are measured, replace the Dryer
CCU control board.
• If the resistance is less than 1kΩ, replace
the operating thermistor.
1.
2.
3.
4.
5.
GaS Dryer:
Unplug dryer or disconnect power.
Remove the control panel bracket to access
the thermal components (See page 4-10).
Perform TEST #3b. If the thermal fuse is
OK, go to step 4.
Perform TEST #3c. If the high temp cutout
is OK, go to step 5.
Locate the high temp thermostat
(See page 4-82). Measure the continuity
through it by touching the meter probes on
the red wire and the blue wire.
• If there is an open circuit
(infinite Ω)
,
replace the high temp thermostat and high
temp cutout.
• Otherwise, go to step 6.
Perform TEST #3d (Gas Valve Test). If this
is OK, replace the Dryer CCU control board.
Heat will not shut off:
Unplug dryer or disconnect power.
Access the Dryer CCU control board, and
measure the resistance between the P14-3
(red-white wire) and P14-6 (red-white wire).
(See page 4-54).
• If 5.- 15kΩ are measured, replace the
Dryer CCU control board.
• If the resistance is greater than 20 k Ω,
replace the operating thermistor.
Test #3a Thermistor Test
The Dryer CCU control board monitors the
exhaust temperature using the thermistor, and
cycles the heater relay on and off to maintain
the desired temperature.
1.
2.
3.
4.
5.
6.
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2.