Error Code P2/PC02Updated 20 hours ago

Introduction

The "P2” or “PC02” error codes indicate high-temperature or high-pressure protection of the Inverter Power Module (IPM). The error codes are for Quantum Series systems. 

Troubleshooting

Note: You may require an HVAC professional for assistance.

The troubleshooting recommendations include:

• Check if an obstruction is present in the air flow system of the indoor and outdoor units.
  • If yes, clear the air inlet and outlet of the indoor and outdoor units. Clear the heat exchanger of the indoor and outdoor units too.
  • If no obstruction is found in the air flow system of the indoor and outdoor units, power Off the unit and restart it after 10 minutes.
• Check if the temperature of the compressor top is more than 194°F.
  • If yes, check if the refrigerant system is functioning properly.
  • If no, check all the connections for the unit. Specifically check the connection of the Over Load Protector (OLP) sensor.
• Check if the refrigerant system is functioning properly.
  • If yes, replace the outdoor control Printed Circuit Board (PCB).
  • If no, repair the refrigerant system.
• Check all the connections for the unit. Specifically check the connection of the OLP sensor.
  • If the connections are fine, measure the resistance between the two ports of the OLP.
  • If the connections are not fine, correct the connections for the unit.
• Measure the resistance between the two ports of the OLP sensor. Check if the resistance reads “O”.
  • If yes, replace the outdoor control PCB.
  • If no, replace the OLP sensor.  

Note: Contact our Parts and Warranty department for any replacement components. Call 1-800-919-0150; Option #4.

Troubleshooting Diagram