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PROBLEM ANALYSIS
INDEX
1. Constantly fills
2. Dishwasher makes a high
pitch noise when washing
3. Dishwasher overflow
4. Does not operate/start
5. Does not wash properly
6. Filling is too long. Exceeds 3
minutes.
7. Filling is too short (under 1
minute)
>The water level system may have
an air leak.
>>verify the water level system
from the pressure switch to the tube
down to the air trap. Replace the
defective parts as required.
>The air trap may have dirt in it.
>>Clean the air trap.
2. Dishwasher makes a high
8. Machine takes too long to pitch noise when washing
empty. Time exceed 2 minutes.
9. Pilot lamps do not illuminate >The wash tank may have too
10. Spots on glasses much detergent.
11. The wash pump does not >>Too much soap may cause the
operate consistently during a pump to make a high pitch noise.
wash cycle Reduce the detergent amount; and
12. Wash cycle is too short ensure it is of the non-foaming type
used. The mechanical seals may be
PROBLEM
>CHECK
worn. Replace as required.
>>ACTION
3. Dishwasher overflow
>Drain outlet hose may be blocked.
>>Un-clog or reposition hose or
1. Constantly fills
replace the drain hose.
>Dishwasher has inactive/not been
>Drain pump may be blocked or
drained in a long time (more than
defective not allowing proper
three hours).
drainage of machine.
>>Switch dishwasher OFF. Pull
>>Un-clog or replace drain pump,
over-flow and drain unit completely.
as required.
Once drained, clean wash tank and
filters. Put all parts back in. Close
>Incoming water pressure may be
door, switch it ON, and let fill.
incorrect.
>> If the water pressure is too high
>Is overflow tube(stand-pipe)
(above 30 psi), you must install a
properly positioned in wash tank?
pressure regulator.
>>Check for cracks or burrs at
bottom of overflow tube.
>Regular dishwashing soap may
have been used or has
>The air pressure switch may be
contaminated the dishwasher
faulty.
accidentally, causing an excessive
>>Replace switch.
amount of sudsing.
>>Drain the tank, remove as much
28
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