Rheem RP18AZ48AJVCA User Manual

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Table 14: Sensor Failure Identification Chart
FAILED COMPONENT FUNCTION DEFAULT OPERATION
Outdoor Sensor (OAT)
Low Ambient Cooling No Low Ambient function
Defrost Defrost will be initiated based on coil temperature and time
One minute fan off delay on COOL mode
No delay functions if failure is open or short. Continue function
for a thermistor range error.
PWM Shift above 104°F [40°C] Shift will not occur
Coil Sensor (EVAPIN)
Defrost Initiate and Terminate
Defrost will occur at each time interval, but will terminate after
5 minutes
Low Ambient Cooling No function
Suction Sensor (OST) EXV Operation The EXV will be held in the last stored position
EXV Inlet Sensor (LIQ)
Charge Verication No Charge Verication function
Sub-cooling verication No Sub-cooling verication function
System Protection
Advanced operating status and diagnostic information is available through the EcoNet
TM
Control Center that greatly
enhances the ability to quickly and accurately diagnose system faults. For further assistance for troubleshooting a
system please see the Bluetooth Contractor's App or the EcoNet
TM
Help Pages at myrheem.com.
9.0 DIAGNOSTICS & TROUBLESHOOTING
Diagnostics
Table 15: EcoNet
TM
Fault Codes & Response Actions
EcoNet
TM
Fault Code Response Action
A001_O Model Data Conguration Error Lockout while active, short cycle to restart.
A002_O Compressor Model Data Error Lockout while active, short cycle to restart.
A003_O Fan Model Data Error Lockout while active, short cycle to restart.
A093_O Model Data Restore Failure Lockout while active, short cycle to restart.
A100_O Communications Lost with Indoor Unit Lockout while active, short cycle to restart.
A906_O Inverter Fault - AC Input Overvoltage Lockout while active, short cycle to restart.
A907_O Inverter Fault - AC Input Undervoltage Lockout while active, short cycle to restart.
A910_O Inverter Fault - Lost Rotor Position 3-strikes to permanent lockout
A912_O Inverter Fault - Self-Check Fault Lockout while active, short cycle to restart.
A915_O Inverter Fault - Comm Fault Lockout while active, short cycle to restart.
A920_O Inverter Fault - PFC Desaturation 3-strikes to permanent lockout
A924_O Inverter Fault - Board Temp 3-strikes to permanent lockout
A925_O Inverter Fault - Comp. Model Unknown Lockout while active, short cycle to restart.
A926_O Inverter Fault - HP Sensor Not Congured Lockout while active, short cycle to restart.
A927_O Inverter Fault - Drive Conguration Lockout while active, short cycle to restart.
A928_O Locked Out - See History Faults Permanent lockout
A929_O 240V Missing or Inverter Comm Failure Lockout while active, short cycle to restart.
A950_O Conguration Data Restore Failure Lockout while active, short cycle to restart.
A953_O Coil Temp Thermistor Failure Algorithms default
A954_O Suction Temp Thermistor Failure Algorithms default
A956_O Suction Pressure Sensor Failure Algorithms default
A957_O Low Refrigerant Pressure 4-hour lockout
A958_O High Refrigerant Pressure 4-hour lockout
A960_O Compressor Locked Rotor - Lockout Permanent lockout
A970_O Inverter/Compressor Mismatch Permanent lockout
A975_O Contactor Stuck On Lockout while active, short cycle to restart.
A979_O Compressor Over/Under Speed 3-strikes to permanent lockout

Rheem RP18AZ48AJVCA Specifications

General

Brand	Rheem
Model	RP18AZ48AJVCA
Category	Air Conditioner
Language	English