PROBABLE CAUSE
CORRECTIVE ACTION
SYMPTOM
10. Liquid line frosted or
Restriction in filter drier.
Replace filter drier.
sweating.
Liquid shut-off (king valve)
Open valve fully.
partially closed.
11. Unit noisy off line.
Loose parts or mountings.
Find loose parts or
mountings and tighten.
Tubing rattling.
Reform tubing so that it is
free of contact.
Bent fan blade causing
Replace blade.
vibration.
Fan motor bearing worn.
motor, if required.
12. Unit cools but does
Fan not operating.
Check fan motor and
not get to set point.
circuits. Replace motor if
required.
13. Surveillance module
Led lamp defective.
Replace led lamp.
upper solution light
Led circuit defective.
Determine reason and
lamp off; displayed
repair.
temperature correct.
14. Surveillance module
Switch defective.
Test and replace if
lower solution led
required.
lamp off when selection
pushbutton switch
Led lamp defective.
Replace led lamp.
depressed; displayed
temperature correct.
Led circuit defective.
Determine reason and
correct.
MD0367
A-6