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Chapter 6: Troubleshooting
PROBLEM
CAUSE
Washer will not
Clogged drain
drain
Drain hose too high
Or hanging too low
Filter blocked
Drain valve or air
valve not operating
Washer overfills
Defective fill switch
Selection buttons
Microprocessor
on control panel
memory error
inoperable or
controls
malfunction
Key pad defective
Water Low Alarm
Improper water
supply
Defective fill valve
Restricted flow
Pipettes do not dry
Dry time to short
Defective air valve
Temp Fail Alarm
Temperature sensor
failure
26
CORRECTIVE ACTION
Clean out drain.
Reroute drain hose
Check filter in washer and clean as needed.
Check operation.
Check operation.
Perform "Factory Reset." Press and hold MENU
button and simultaneously turn on power switch.
Release MENU button and display will show the
diagnostics screen. Press MENU until Factory
Reset is displayed. Press SELECT. Press MENU
Return to Menu is displayed. Press SELECT.
Replace key pad.
Make sure water is turned on.
Water pressure must be at least 8 psi
(55kPa) and flow must be at least 1.25 gallons
(4.7 liters)/minute.
At least .67 gallons (2.5 liters) must be available
if using pure water.
Clean screens inside the inlet fittings of the water
valve.
Check voltage to valve.
Replace valve if it does not operate with proper
voltage.
Check for kinks in water hoses in base of washer
to water inlet fitting on side of tank.
Increase dry time.
Check operation in diagnostics
Check voltage to valve
Replace valve if it does not operate with proper
voltage.
Check connection.
Replace sensor
Product Service 1-800-522-7658
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