Amana AVPEC Series User Manual

23
TROUBLESHOOTING
b4 E_b4
BLower Motor Trip
or Lost Rotor
(MOTOR TRIPS)
Blower Motor -
Current Trip (or) Lost Rotor
• Fan/motor obstruction or abnormal motor loading • Power interruption (low voltage) • High loading conditions, blocked filters • Blockage in the airflow (ductwork) or ductwork undersized
b6 E_b6
Voltage or Temperature Trip
(MOTOR VOLTS)
• Blower motor stops for over/under
voltage
• Bower motor stops due to PCB
over heating
• High AC line voltage to ID blower • Low AC line voltage to ID blower • High ambient temperatures • Incorrect wiring • Fan/motor obstruction or blockage in the airflow
b7 E_b7
Incomplete Parameters
Sent to Motor
(MOTOR PARAMS)
ID blower motor does not have
required parameters to function.
• Wrong / no shared data on the network • Locked motor rotor condition
b9 E_b9 No Display
Low Indoor Airflow
(without Electric Heat mode)
• Fan/motor obstruction or blocked filters • Restrictive ductwork or ductwork undersized • W iring disconnected • Wrong outdoor/indoor combination • ID motor failure
9b E_9b LOW ID AIR EH MODE
Low Indoor Airflow
(with Electric Heat mode)
• Fan/motor obstruction or blocked filters • Restrictive ductwork or ductwork undersized • ID motor failure • W iring disconnected
70 E_70 EEV OPEN CKT EEV disconnection detected
• Indoor EEV coil not connected • Incorrect wiring to EEV
73 E_73 LIQ TEMP FLT Liquid side thermistor abnormality
• Open (or) short circuit of the liquid thermistor (X5A) • Liquid thermistor reading incorrect or values outside the normal range
74 E_74 GAS TEMP FLT Gas side thermistor abnormality
• Open (or) short circuit of the gas thermistor (X5A) • Gas thermistor reading incorrect or values outside the normal range
75 E_75 PRESSURE FLT Pressure sensor abnormality
• Open (or) short circuit of the Pressure sensor (X15A) • Pressure sensor reading incorrect or values outside the normal range
77 E_77 TSTAT ID NO COM
Indoor Unit - Thermostat
communication error
(start-up & during operation)
• Incorrect wiring between ID unit and thermostat. The system may have the communication error without error code 77 on the indoor PCB. Follow section 16.6 SYSTEM TROUBLESHOOTING • Thermostat failure • Power interruption (low voltage)
Error
Code
De sc ri pti on Possi bl e Ca use sClimateTalk MessagePCB LED Display
• Check for obstruction on the fan/motor/ductwork • Verify the input voltage at the motor • Check filters, grills, duct system, coil air inlet/outlet for blockages. • Replace motor • Verify line voltage to blower is within the range specified on the ID blower rating plate • See "Installation Instructions" for installation requirements • Check power to air handler blower • Check for obstruction on the fan/motor/ductwork • Check wiring • Replace motor • Check for locked rotor condition (see above error code for details) • Replace circuit board or motor • Check for obstruction on the fan/motor • Check ductwork/filter for blockage, clean filters • Remove obstruction. Verify all registers are fully open • Check the connections and the rotation of the motor • Verify the input voltage at the motor • Verify ductwork is appropriately sized for system. Resize/replace ductwork if needed • Replace motor • Check for obstruction on the fan/motor • Check ductwork/filter for blockage, clean filters • Remove obstruction. Verify all registers are fully open • Check the connections and the rotation of the motor • Verify the input voltage at the motor • Verify ductwork is appropriately sized for system. Resize/replace ductwork if needed • Replace motor • Check Indoor EEV coil connection (PCB and junction connector) • Replace EEV coil • Check the resistance value of EEV coil (refer service manual) • Replace the control board • Check the connection to liquid thermistor (PCB and junction connector) • Check the resistance value of the thermistor (refer service manual) • Replace thermistor • Replace the control board • Check the connection to gas thermistor (PCB and junction connector) • Check the resistance value of the thermistor (refer service manual) • Replace thermistor • Replace the control board • Check the connection to pressure sensor (PCB and junction connector) • Check the output voltage of the pressure sensor (refer service manual) • Replace pressure sensor • Replace the control board • Check for thermostat and indoor unit wiring • Verify the input voltage at the ID unit and thermostat After recovering the system with power supply, TSTAT ID NO COM will continue to be displayed on the thermostat within 2 minutes. The error code will be cleared automatically. • Replace control board or thermostat • Press "LEARN" button on PCB for more than 5 seconds to reestablish network
Corre ctive Actions

Amana AVPEC Series Specifications

General

Brand	Amana
Model	AVPEC Series
Category	Air Handlers
Language	English