Carrier EVOLUTION 189BNV Service Manual page 21

Flash Code Type Amber LED Description
DISCHARGE TEMP OUT
(Stage down for each oc-
currence, elevates to fault
code 74 after 5 occurrence.
59 Local cleared if demand cycle is
reaching limit, or system
has been continuously run-
hours with reduced capaci-
FAN INVERTER FAULT
61 Local
(elevates to fault code 76
FAN INVERTER CURRENT
63 Local
(elevates to fault code 86
DC VOLTS LOW --- SPEED
65 Local
OUTDOOR FAN DROPPED
66 Event
67 Event STATOR HEATER FAULT
10 MIN STAGE 2 WARMUP
68 Event
INVERTER/COMPRESSOR
INTERNAL FAULT (Elevates
System
69
to this fault code after 5 hid-
Malfunction
den occurrences of itself)
COMPRESSOR DROPPED
71 Event
SUCTION OVER TEMPER-
72 Local
(elevates to fault code 82
Reset
Time
OF RANGE EVENT
Reduced capacity is
15 Min-
utes
satisfied without ODT
ning at any stage for 2
ty)
6 Minutes
after 5 occurrences)
FAULT
6 Minutes
after 5 occurrences)
NA
LIMITING
6 Minutes
OUT
6 Minutes
10 Min-
DELAY utes
15 Min-
utes
6 Minutes
OUT
ATURE EVENT 15 Min-
utes
after 3 occurrences)
Mode Possible Causes
Both Refer to fault code 74
Fan motor failed to
start
Both Fan motor rotor mis-
alignment
Refer to fault code 76
Both Refer to fault code 86
Caused by other
fault code shut down
Low supply line volt- Check supply voltage to ODU; if low con-
age (< 197 VAC)
Both
Loose wire in control
box area
Inverter internal
damage
MOC is reporting
Troubleshoot fan motor and make sure it
that fan motor isn't
running
Both
3T Inverter enters
test mode
There is a demand
for stator heat but
MOC doesn't detect
it
Both
Damaged inverter
generating other in-
operable fault codes
such as 88, 95
High voltage power
Both
cycle
charge status, if high remove charge using
Cool Overcharged System
Check charge in heating mode per heating
Heat Overcharged System
match then pull out charge, weigh in using
Phase imbalance/
compressor or in-
verter miswire
Flooded start
Both
Inverter damage
Compressor dam-
age
MOC is reporting
that compressor isn't
running
Both
3T Inverter enters
test mode
Both Refer to fault code 82
21
Actions
Troubleshoot outdoor fan motor & blade
and make sure they are working
System will attempt to run again
System will attempt to run again
tact utility provider
Loose wire: check for loose wire in ODU
Replace Inverter
is working
Replace inverter with latest software
Check compressor winding resistance or
miswire of compressor leads at terminals
U,V,W
Replace Inverter
No action
Check system subcooling to determine
Charging Mode (follow proper charging
procedures)
check charge chart. If pressures do not
heating charge method
Check compressor winding resistance or
miswire of compressor leads at terminals
U,V,W
Troubleshoot EXV & TXV
Replace inverter
Replace compressor
Refer to TIC 2015 ---0017 for more details
Replace inverter with latest software