Bryant 189BNV EVOLUTION Service Manual page 24

Variable Speed Drive LED Location and Description (Sizes 13 and 24B)
STATUS
COMM
Reference Color
LED200 Red
LED207 Amber
Reference Color
STATUS Amber
COMM Green
Reference Color
STATUS Amber
COMM Green
Fault Code Description
Communications Loss
NOTE: If any of the AOC control board header pins are damaged or are not making good contact, AOC board should be replaced.
MOC LED Description (Sizes 13 and 24B)
Status Condition
Steady
Normal
On
Off Abnormal
Steady
Normal
On
Blinking Abnormal
Off Normal
AOC LED Descriptions (Sizes 13 and 24B)
Status Condition
Steady
Normal
On
Blinking Abnormal
Steady
Normal
On
LED Not Functioning Properly --- Requires AOC or Inverter Replacement
Suspect AOC board
If Amber STATUS light is not on (neither steady nor blink-
ing), with power to outdoor unit
In Communicating mode, if Green COMM LED is not on
when AB indoor wires are connected to AOC AB connector
and indoor has communications
UI Fault Codes requiring AOC or Inverter Replacement
Indicates MOC powered where DC bus at 40volts or higher
No power, capacitor voltage drained
If compressor stops, it indicates some fault happening;
If compressor is running, it indicates speed is limited or reduced.
Compressor stops and no fault
Communication from AOC to indoor wall control
AOC STATUS is not functioning properly and AOC board
should be replaced.
AOC is not capable of communicating with indoor; AOC
board should be replaced.
Fault Code
Loss of communication with outdoor unit AOC board;
179
AOC or Inverter may need to be replaced
24
LED 200
LED 207
Description
Compressor is running
Description
AOC status---standby mode
AOC function/fault status
Failure Description
Failure Description