LG WF-T7066MN Service Manual ▷ View online
4-4. TEST RUNNING WITHOUT WATER
1) METHOD TO USE QC TEST MODE
To use the CHECK PROGRAM (QC TEST MODE), press PROCESS, DELAY START and
POSWER button ON without depositing any laundry.
In QC TEST MODE all LEDsare on and press START (PAUSE) button to check over the
following items.
POSWER button ON without depositing any laundry.
In QC TEST MODE all LEDsare on and press START (PAUSE) button to check over the
following items.
NO
CHECK METHOD
DISPLAY
CHECK ITEM
1
2
3
4
5
6
7
8
EP
A3
A4
A5
A5
A6
Initial state
On Pressing 1st
time
On Pressing 2nd
time
On Pressing 3rd
time
On Pressing 4th
time
On Pressing 5th
time
On Pressing 6th
time
On Pressing 7th
time
Water level frequency is on
DISPLAY in the condition of no
water in TUB.
After detecting laundry amount
the number of pulse is on the
DISPLAY.
AUTO off
All LEDs off.
All LEDs on.
64~69 ON DISPLAY.
Laundry weight test.
COLD water.
If the LID is opened, is on the
DISPLAY. In that case, close the LID.
DRAIN MOTOR progresses 1st step.
DRAIN MOTOR progresses 2nd step.
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4-5. TROUBLE SHOOTING AGAINST COMMON WASHING PROBLEMS
Many washing problems involve poor soil & stain removal, residues of lint and scum,
and fabric damage. For satisfactory washing results, follow these instructions.
and fabric damage. For satisfactory washing results, follow these instructions.
WASH PROBLEM
Possible Causes
Problems
Solutions & Preventive Measures
• Use correct amount of detergent for load size, amount of soil
and water hardness.
• Use warm or hot water for normal soil.
Different water temperature may be required according to soil
type.
type.
(refer to page 12)
• Reduce load size.
• Wash with Jean or Soak(Turbo) & Jean wash cycle for heavy
• Wash with Jean or Soak(Turbo) & Jean wash cycle for heavy
soiled laundry.
• Separate heavily soiled items from lightly soiled ones.
• Pretreat stain and heavy soil according to directions shown on
• Pretreat stain and heavy soil according to directions shown on
page 11.
• Rub the stain with bar soap. Wash.
• Do not overfill fabric softener dispenser and do not pour liquid
• Do not overfill fabric softener dispenser and do not pour liquid
fabric softener directly onto fabric.
See page 14 for more instructions.
See page 14 for more instructions.
• Keep the recommendations against Scrud(waxy buildup). (refer
to scrud page14.)
• Use correct amount of detergent for load size, amount of soil
and water hardness.
• To restore discolored load of whites, use rust remover safe for
fabric.
• Install nonprecipitating water softener or an iron filter in your
water supply system for an ongoing problem.
• Before washing, run water for a few minutes to clear lines.
• Wash lint givers eg towels, flannelette sheets, separately from lint
collectors eg synthetic fabrics and remove tissues in pockets
before wash. See page 11 for sorting and caring before loading.
before wash. See page 11 for sorting and caring before loading.
• Do not overload the washer
• Do not overload the washer.
• Some detergents need to be pre-dissolved, check the detergent
• Some detergents need to be pre-dissolved, check the detergent
instructions. Try pre-dissolving the detergent.
• Increase water temperature using hot water safe for fabric.
• Use proper amount of detergent.
• Use proper amount of detergent.
• Never pour chlorine bleach directly on fabric.
See page 13 for adding liquid bleach.
• Fasten zippers, hooks, and buckles.
• Remove objects in pockets. See page 11 for caring before
• Remove objects in pockets. See page 11 for caring before
loading.
• Do not overload the washer.
Poor soil
removal
removal
• Not enough detergent
• Wash water temperature
• Wash water temperature
too low.
• Overloading the washer
• Incorrect wash cycle
• Incorrect sorting
• Do not pretreat stain
• Incorrect wash cycle
• Incorrect sorting
• Do not pretreat stain
• Undiluted fabric softener
dispensed directly onto
fabric
fabric
• A buildup caused by the
interaction of fabric
softener and detergent can
flake off and mark clothes
softener and detergent can
flake off and mark clothes
• Not enough detergent
• Iron or manganese in
water supply, water pipes,
or water heater
or water heater
• Incorrect sorting
• Tissues left in pocket
• Overloading the washer
• Tissues left in pocket
• Overloading the washer
• Overloading the washer
• Undissolved detergent
• Use too much detergent
• Undissolved detergent
• Use too much detergent
• Incorrect use of chlorine
bleach.
• Unfastened zippers,
hooks, buckles
• Ribs, tears and broken
threads
• Overloading the washer
• Degradation of fabric
• Degradation of fabric
Blue Stains
Holes, tears,
or snags
or snags
Black or gray
marks on
clothes
marks on
clothes
Yellow or
brown rust
stains
brown rust
stains
Lint
Residue or
detergent
detergent
30
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4-6
For more detailed information for trouble shooting refer to page 33 to 44.
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