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Compressor Verification: Parameters
In CDA menu under unit controls verify PM tonnage
No
Replace PM
WARNING
400 VOLTS
ELECTRICAL
HAZARD
Failure to follow this
warning could result in
personal injury or death.
WAIT TWO (2) MINUTES
after disconnecting power prior
to touching electrical
components as they may hold
a dangerous charge
of 400VDC, then verify DC
Voltage is less than 42 VDC
at inverter test points
labeled +VDC and -VDC before
servicing board.
+VDC
-VDC
Run Drive Diagnostic Test
36
Compressor Verification:
Parameters
matches model number
Does PM match
model?
In CDA menu under unit controls verify that
compressor size matches compressor model
Y es
Y es
number (DRV COMP SIZE)
Y es
Does compressor size
match unit model number?
No
Replace
Compressor
4TWL9048A-SF-1C-EN
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