Before Calling For Service - LG LDT7797ST Owner's Manual

48 TROUBLESHOOTING

Before Calling for Service

The appliance is equipped with an automatic error-monitoring system to detect and diagnose problems at an
early stage. If the appliance does not function properly or does not function at all, check the following before you
call for service.
Problem
Dishwasher will not operate.
Dishwasher operates too long.
Odor
Water remains in tub after
completion of cycle.
Food soil remains on dishes.
Cloudiness on glassware.
Black or gray marks on dishes.
Yellow or brown film on inside
surfaces of dishwasher.
Possible Cause
Start button is not pressed.
Door is not completely closed.
Power supply or power supply line
is not connected.
Fuse is blown or circuit breaker
tripped.
Control Lock is activated.
Dishwasher is connected to cold
water.
The previous cycle was stopped
before completion and residual
water remains in the dishwasher.
There is food in the bottom of the
unit or in the filter.
Unwashed dishes are left in the
unit for a long time.
Drain hose is kinked or clogged.
Improper cycle selection.
Water temperature is too low.
Dishwashing detergent was not
used.
Low inlet water pressure.
Water jet holes on spray arms
blocked.
Improper loading of dishes.
Filters are clogged.
Combination of excessive
detergent and hard water.
Aluminum items rubbing dishes
during cycle.
Coffee or tea stains.
Solutions
• Press the Start button.
• Make sure that the door is
completely closed and latched.
• Connect the power supply or power
supply line properly.
• Replace the fuse or reset the circuit
breaker.
• Deactivate Control Lock.
• Check the water supply connection
or water heater setting. (Heating
cold water takes longer.)
• Turn on the power, run the Cancel
cycle option to remove the residual
water, then run the Turbo cycle
using detergent but with the
dishwasher empty.
• Clean the filter and the interior
according to the Maintenance
section of the owner's manual.
• Cycle with one cup of white vinegar
in a dishwasher safe glass or bowl
placed on the upper rack. (Vinegar
is an acid, and with constant use it
could damage your appliance.)
• Adjust hose or clear blockage.
• Select correct cycle based on soil
level and type of dishware being
washed.
• Check water supply connection or
water heater setting.
• Use recommended detergent.
• Water pressure should be between
20 and 80 psi.
• Clean the spray arms.
• Make sure dishes do not block
spray arm rotation or interfere with
detergent dispenser.
• Clean filters.
• Use less detergent and use a rinse
aid to minimize the problem.
• Reposition the dishes.
• Eliminate the stain by using a stain
removal product.