Maytag MTW6700TQ0 Manual

FOR SERVICE TECHNICIAN ONLY – DO NOT REMOVE OR DESTROY
WARNING
Electrical Shock Hazard
Disconnect power before
servicing.
Replace all parts and
panels before operating.
Failure to do so can result
in death or electrical shock.
IMPORTANT
Electrostatic Discharge (ESD) Sensitive
Electronics
ESD problems are present everywhere. ESD may
damage or weaken the electronic control assembly.
The new control assembly may appear to work well
after repair is finished, but failure may occur at a later
date due to ESD stress.
Use an anti-static wrist strap. Connect wrist strap
to green ground connection point or unpainted
metal in the appliance -OR- Touch your finger
repeatedly to a green ground connection point or
unpainted metal in the appliance.
Before removing the part from its package, touch
the anti-static bag to a green ground connection
point or unpainted metal in the appliance.
Avoid touching electronic parts or terminal
contacts; handle electronic control assembly by
edges only.
When repackaging failed electronic control
assembly in anti-static bag, observe above
instructions.
DIAGNOSTIC GUIDE
Before servicing, check the following:
Make sure there is power at the wall outlet.
Has a household fuse blown or circuit breaker tripped?
Was a regular fuse used? Use a time-delay fuse.
Are both hot and cold water faucets open and water
supply hoses unobstructed?
All tests/checks should be made with a VOM (volt-ohm-
milliammeter) or DVM (digital-voltmeter) having a
sensitivity of 20,000 Ω per volt DC or greater.
NOTE: Avoid using large diameter probes when
checking harness connectors as the probes may
damage the connectors upon insertion.
SOFTWARE COPYRIGHTED. MANUFACTURED UNDER ONE OR MORE OF
THE FOLLOWING U.S. PATENTS:
4,693,095 4,891,959 5,191,667 5,345,793
4,697,293 4,910,979 5,191,668 5,359,744
4,700,554 4,945,735 5,191,669 5,373,715
4,709,951 4,947,516 5,193,361 5,460,018
4,715,401 4,969,341 5,199,127 5,493,745
4,719,769 4,972,134 5,199,281 5,504,955
4,754,622 4,977,394 5,200,684 5,507,053
4,759,202 4,986,093 5,205,141 5,515,565
4,774,822 4,987,627 5,219,370 5,582,039
4,779,431 5,000,016 5,233,718 5,582,199
4,782,544 5,031,427 5,249,441 5,651,278
4,784,666 5,033,277 5,255,844 5,671,494
4,785,643 5,074,003 5,257,901 5,765,404
4,793,820 5,075,613 5,259,217
5,784,902
4,807,452 5,113,542 5,269,160 5,791,167
4,809,524 5,130,624 5,271,251 5,836,180
4,835,991 5,150,588 5,297,403 5,852,942
4,854,559 5,154,071 5,305,485 5,875,655
4,856,303 5,166,568 5,312,138 5,878,602
4,870,988 5,167,722 5,314,044 5,883,490
4,888,965 5,172,573 5,345,637 5,946,946
4,890,465 5,177,659 5,345,792 6,065,171
PART NO. W10092760A
Check all connections before replacing
components. Look for broken or loose wires, failed
terminals, or wires not pressed into connectors far
enough.
A potential cause of a control not functioning is
corrosion or contamination on connections.
Observe connections and check for continuity with
an ohmmeter.
Connectors: Look at top of connector. Check for
broken or loose wires. Check for wires not pressed
into connector far enough to engage metal barbs.
Resistance checks must be made with washer
unplugged or power disconnected.
DIAGNOSTIC TESTS
There are three diagnostic test modes available:
Automatic, Manual and Console. These tests allow the
factory or service personnel to test and verify all
inputs to the machine/motor control. You may want to
allow the automatic test cycle to complete prior to
going into specific troubleshooting tests, to verify all
washer's subsystems functionality.
ACTIVATION OF AUTOMATIC
DIAGNOSTIC TEST MODE
1. Be sure the washer is in standby mode (plugged in
with all indicators off; or with only the Clean
indicator on).
2. Select any one button (except POWER, START and
PAUSE/CANCEL) and follow the steps below, using
the same button:
a. Press/hold 3 seconds.
b. Release for 3 seconds.
c. Press/hold 3 seconds.
d. Release for 3 seconds.
e. Press/hold 3 seconds.
If this test mode has been entered successfully,
all indicators on the console are illuminated for
5 seconds with
Time Remaining two-digit display.
If indicators do not display as described above,
the press/hold/release procedure above may not
have been performed within the time frame
necessary for successful entry. Repeat step 2 to
ensure this was not the cause. If still
unsuccessful, see Diagnostic: Unsuccessful
Entry, at right.
3. The program then checks for saved fault codes:
If there are saved fault codes, see Diagnostic:
Saved Fault Codes, page 2.
If there are no saved fault codes, all indicators
on the console will momentarily turn off, then
turn back on with
5 seconds, the Automatic test, below, begins.
DIAGNOSTIC: Automatic
6,070,282 6,658,902
Performs a five-minute automatic test with water
6,105,403 6,715,175
6,115,863 6,766,670
functions to check major washer functions (lid can be
6,125,490 6,786,058
open). Press the same button used in step 2 above to
6,185,774 6,820,447
advance through automatic test steps.
6,212,722 6,845,536
6,227,013 6,860,032
NOTE: Basket must be floating in order to agitate.
6,227,014 6,906,270
Step C1 must be allowed to complete before
6,269,666 6,927,351
6,347,645 6,961,642
advancing to step C5.
6,363,563 6,966,204
6,393,872 D375,390
Two-Digit
6,430,971 D381,140
6,505,370 D423,740
Indicator
6,550,292 D426,686
6,564,413 D456,572
Slow spin to
6,584,811 D459,844
C0
6,591,439 D463,631
6,591,638 D465,308
6,637,062 D474,566
6,640,372 D502,577
6,647,575 D511,955
POUR LE TECHNICIEN SEULEMENT – NE PAS ENLEVER NI DÉTRUIRE
88
showing in the Estimated
88
displayed. After
Machine Recommended
Function Procedure
If no spin go to Manual:
Motor, Spin test,
23 rpm.
page 2.
PAGE 1
Two-Digit Machine Recommended
Indicator Function
Warm water fills
through Fresh
and Detergent*
valves, then
If no water, or fill
Fresh valve until
temperature is wrong, go
basket floats
to Manual: Water Valves
(disengages);
test, page 2.
C1
then washer
If basket does not float
continues filling
or disengage, determine
through Fresh
cause of friction.
and Detergent
valves to
minimum water
level.
Cold water fills
If no water in bleach cup
through Bleach
go to Manual: Water
C2
valve for
Valves test, page 2.
10 seconds.
Hot water fills If no water in fabric
through Fabric softener cup go to
C3
Softener* valve
Manual: Water Valves
for 10 seconds. test, page 2.
Warm water fills
If no water in detergent
through
C4 cup go to Manual: Water
Detergent* valve
Valves test, page 2.
for 10 seconds.
Heater turns on N/A (Applies to heater
C5
for 5 seconds.
models only).
If no wash action go to
Agitate for
C6 Manual: Motor, Agitate
15 seconds.
test; page 2.
If water is not being re-
Recirculate for
C7
circulated go to Manual:
10 seconds.
Pumps test, page 2.
If water is not draining
go to Manual: Pumps
Drain to basket
test, page 2.
engaged plus
C8
timed drain for
If basket does not
10 seconds.
engage determine cause
of friction.
If drain pump is not on
go to Manual: Pumps
test, page 2.
If basket is not turning
Drain & Slow
go to Manual: Motor test,
spin 23 rpm for
C9 page 2.
5 seconds, then
If basket does not stop
coast to 0 rpm.
spinning within
10 seconds, press
PAUSE/CANCEL and
restart test.
If no end of cycle beep,
make sure End of Cycle
(none)
End of Cycle Signal is on. From
(Test
beep.
Setting Mode, pressing
ends)
buttons should sound
valid key press beep.
* Step will occur but no water will be dispensed in
models that do not have a fabric softener cup and/or
detergent cup.
DIAGNOSTIC: Unsuccessful Entry
If entry into diagnostic mode is unsuccessful (see steps
1 and 2 of Activation of Automatic Diagnostic Test Mode,
at left), refer to the following indications and actions:
Indication 1: None of the indicators or display
turns on.
Action:
Press POWER button to enter setting mode.
If indicators come on, try to change the function
for the button used to activate the diagnostic test
mode. If that button fails to change the function,
something is faulty with the button, and it is not
possible to enter the diagnostic mode.
PIÈCE N
Procedure
o
W10092760A