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WARNING: Inspection, testing and repair of electrical equipment should only be performed by a qualified service techni-
cian. Many of the tests require that the unit have power to it and live electrical components be exposed.
USE EXTREME CAUTION WHEN TESTING THE MACHINE.
TROUBLESHOOTING SECTION
13
Possible Cause Action
Faulty fill microswitch. Replace microswitch.
Cam timer stalled in fill position.
If cam timer is not rotating, check the
voltage to the motor. If voltage is correct,
replace timer.
Shorted out ON/FILL switch.
Check the voltage across the switch. If the
voltage is incorrect, replace the switch.
Shorted/defective liquid level control board
or probe.
Check voltage going to each component
and ensure they are wired correctly. If
satisfactory, replace the defective part.
Door switch shorted out/wired incorrectly.
Check the wiring of the door switch, if
correct, replace the door switch.
Faulty wash relay (wash relay welded
closed).
Turn machine off, if wash relay
doesn't
release, replace contactor.
Faulty control relay.
Measure the continuity between terminals #
6 and #9. If there is no continuity, replace
the relay.
Water level is too low.
Check to ensure that the drain stopper is in
and has an O-ring. Check to ensure that the
LLC board and probe are functioning
properly.
Pump intake strainer is clogged. Remove and clean strainer.
Symptom
Dishmachine fills continuously, only when
the power is on.
Dishmachine runs with the door open.
Low wash water pressure.