Amana AVZC18 Series User Manual

61
SERVICING
b4 E_b4
Blower 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
• 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
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 • Fan/motor obstruction or blockage in the airflow
• 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
b7 E_b7
Incomplete Parameters
Send to Motor
(MOTOR PARAMS)
ID blower motor does not have
required parameters to function.
Motor fails to start 40 consecutive
times.
• Wrong / no shared data on the network • Locked motor rotor condition
• Check for locked rotor condition (see above error code for details) • Replace circuit board or motor
b9 E_b9 No Display
Low Indoor Airflow (without Electric
Heat mode)
• Fan/motor obstruction or blocked filters • Restrictive ductwork or ductwork undersized •
ID motor failure
• 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
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 • Combination mistake of outdoor unit and indoor unit
• 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
70 E_70 EEV OPEN CKT EEV disconnection detected
• Indoor EEV coil not connected • Incorrect wiring to EEV
• 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
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
• 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
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
• 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
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
• 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
77 E_77 No Display
Indoor Unit - Thermostat
communication error (start-up &
during operation)
• Incorrect wiring between ID unit and thermostat • Thermostat failure • Power interruption (low voltage)
• 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
Corrective Actions
Error
Code
Description Possible CausesClimateTalk MessagePCB LED Display
INDOOR UNIT ERROR CODES

Amana AVZC18 Series Specifications

General

Brand	Amana
Model	AVZC18 Series
Category	Heat Pump
Language	English