Bryant EVOLUTION V Installation Instructions Manual page 20

Flash Code Type
55 Fault
OAT ---OCT THERMISTOR
56 Local
57 Fault
59 Local
(elevates to fault code 74
61 Local (elevates to fault code 76
62 Local
(elevates to fault code 85
FAN INVERTER CURRENT
63 Local
(elevates to fault code 86
DC VOLTS LOW --- SPEED
65 Local
OUTDOOR FAN DROPPED
66 Local
67 Local
10 MIN STAGE 2 WARMUP
68 Event
System INVERTER/COMPRESSOR
69
Malfunction
Reset
Amber LED Description
Time
COIL TEMP SENSOR
NA
FAULT
NA
OUT OF RANGE
SUCTION PRESSURE
NA
SENSOR FAULT
DISCHARGE TEMP OUT
OF RANGE EVENT 6 Min-
utes
after 3 occurrences)
FAN INVERTER FAULT
6 Min-
utes
after 5 occurrences)
FAN INVERTER TEMP
HIGH
NA
after 3 occurrences)
FAULT 6 Min-
utes
after 3 occurrences)
NA
LIMITING
6 Min-
OUT utes
6 Min-
STATOR HEATER FAULT
utes
10 Min-
DELAY utes
15 Min-
INTERNAL FAULT utes
Mode Possible Causes
Sensor Harness not
connected to AOC Ensure plug is connected to AOC control
control
Check harness for continuity; see resis-
Broken or loose
tance chart to check resistance at given
harness wire
Coil Thermistor not
Ensure Sensor is properly clipped to the
Both
properly attached or
in wrong location
Check harness for continuity; see resis-
Broken or Damaged
tance chart to check resistance at given
Sensor
Hardware damage
to AOC control
Coil Thermistor not
Ensure Sensor is properly clipped to the
properly attached or
in wrong location
Outdoor Ambient
Both Temperature sensor
improperly installed
(sensor body may
be in contact with
sheet metal)
Check wiring between AOC and reversing
Heating when cool-
Cool
ing is demanded
Sensor Harness not
connected to AOC Ensure plug is connected to AOC control
control
Broken or loose
harness wire
Both
Electrical short de- reading at service valve (see transducer
stroyed Transducer
electronics
Heat damage dur-
reading at service valve (see transducer
ing brazing
measurement chart); replace transducer
Both See fault 74
Troubleshoot outdoor fan motor & blade
OFM failed to start
Both Fan motor misalign-
ment
See Fault 76
Both See fault 85
Both See fault 86
Low supply line volt- Check supply voltage to ODU; if low con-
age (< 197 VAC)
Loose wire in con-
Both Loose wire: check for loose wire in ODU
trol box area
Inverter internal
damage
MOC is reporting
Both that OFM isn't run-
ning
There is a demand
Check compressor winding resistance or
for stator heat but
Both miswire of compressor leads at terminals
MOC doesn't detect
it
High voltage power
Both
cycle
Phase imbalance/ Check compressor winding resistance or
compressor or in- miswire of compressor leads at terminals
verter miswire
Flooded start
Incorrect refrigerant
Both
charge
Inverter damage
Compressor dam-
age
20
Actions
temperature
distributor entry ---tube
temperature
Replace AOC control
distributor entry ---tube
Properly install OAT sensor
Check fuse on AOC control
valve
troubleshoot reversing valve
Inspect outdoor coil for obstructions
Check harness
Compare transducer reading to gauge
measurement chart); Check system for
electrical shorts and correct; replace
transducer
Compare transducer reading to gauge
Same actions for 74
and make sure they are working
System will attempt to run again
Same actions for 76
Same actions for 85
Same actions for 86
tact utility provider
Replace Inverter
Troubleshoot outdoor fan motor and
make sure it is working
U,V,W
No action
U,V,W
Troubleshoot EXV & TXV
Check refrigerant amount
Replace inverter
Replace compressor