TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY), CONTINUED
44
CONDITION
TROUBLESHOOTING
No Case Lights Are
Working
Follow previous page
’
s
System Not Operating
instructions.
Check voltage at LED driver. If voltage is entering but not exiting, LED driver may
be faulty.
Check connection at case rear (from field wiring box) for voltage.
Case Light Is Not
Working
Follow previous page
’
s
System Not Operating
instructions.
If case light still do not come on, call
SCC Technical Service
phone number
(listed on last page of this operating manual).
Control Display Is
Flashing
See your case
’
s thermostat label (near temperature controller) for your model
’
s
required settings.
Case Is Not Holding
Temperature
If a large amount of warm product was added to the case, it will take time for the
temperature to adjust. Unit needs product to be pre
-
chilled.
Temperature changes during defrost mode but will return to normal. Fourth LED
(on temperature controller) will indicate defrost cycle in progress.
Check that case is not in sun or near a heat or air
-
conditioning vent.
If case is located near front doors, temperature fluctuation can hinder unit
’
s ability
to maintain temperature.
Check that condenser coil has been cleaned.
Check air grilles for obstructions.
Check sight glass for flashing and/or low charge.
Check Set Point Temperature; it may be adjusted too high.
Condensing Unit Is
Not Operating
Check that the power is turned on.
Determine if temperature controller settings are properly set.
See your case
’
s
serial label for your model
’
s specified settings. See
SERIAL LABEL LOCATION
& INFORMATION LISTED / TECH INFO & SERVICE
section in manual
for label
location, etc.
