Air Handler Troubleshooting Matrix (Continued) - Amana AVPEC Series Installation & Operating Instructions Manual

26 AIR HANDLER TROUBLESHOOTING MATRIX (CONTINUED)

Symptoms of Abnormal
Operation
Blower Motor Operating in Power
Blower Motor Current Trip or
Lost Rotor
Blower Motor Locked Rotor
Over/Under Voltage Trip
Incomplete Parameter sent to
Motor
Inadequate Airflow
ClimateTalk Network
Communications
Coil Temperature Sensor Open
Coil Temperature Sensor Shorted
Suction Temperature Sensor
Open
Suction Temperature Sensor
Shorted
EEV not connected
Liquid Thermistor Open or
Shorted
Gas Temperature sensor Open or
Shorted
Pressure Sensor Open or Shorted
Indoor Unit - Thermostat
communication error
(start-up & during operation)
Diagnostic
/ Status Fault Description
LED Codes
Motor operational
E
parameters exceeded
Motor will not rotate
E
Motor will not rotate
E
Motor Line Voltage
E
Noise on motor
E
communication line
Less than expected
E
airflow
No ClimateTalk
E
communications
No coil temperature
E
No coil temperature
E
No suction temperature
E
No suction temperature Faulty sensor
E
No EEV
E
communications
No coil temperature
E
No suction temperature
E
No indoor pressure
E
reading
No Display
E
Possible Causes
Power fluctuation
Excessive motor current
draw
Motor not running
Line voltage to motor
out of range
Corrupted data in motor
communications
Blower motor running
too slow
Broken or disconnected
ClimateTalk wiring
Sensor not connected or
broken wire
Faulty sensor
Sensor not connected or
broken wire
EEV not connected,
broken wire
Sensor not connected or
broken wire
Sensor not connected or
broken wire
Sensor not connected or
broken wire
Incorrect wiring
between ID unit and
thermostat
Thermostat Failure
Power interruption (low
voltage)
20
Corrective Actions
Replace motor
Replace motor
Replace motor
Verify motor line voltage
Replace motor
Power cycle system
Replace motor
Replace motor
Check ClimateTalk
communications wiring
Check if coil sensor is connected
Replace coil sensor
Replace coil sensor
Check if suction sensor is
connected.
Replace suction sensor
Replace Suction sensor
Check EEV connection at air
handler
Check coil (liquid) sensor is
connected, if no connect, if yes
replace
Check suction (gas) sensor is
connected, if no connect, if yes
replace
Check if sensor is connected
If connected, replace sensor, may
also need to replace air handler
board
Check for thermostat and indoor
unit wiring
Verify the input voltage at the ID
unit and thermostat
Replace control board or
thermostat
Press "LEARN" button on PCB for
more than 5 seconds to
reestablish network