Error code CL
The “CL” error code indicates your Quantum Series system needs a filter cleaning.
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Error Code Troubleshooting (Quantum Series)
Decode and resolve errors for Quantum Series systems by using these troubleshooting guides and flowcharts.
Error code E1/EL 01/EL01
The “E1”, “EL 01”, or “EL01” error codes indicate the indoor and outdoor units of your Quantum Series system cannot successfully communicate.
Error code E3/EH 03/F5/EC 07
The "E3", "EH 03", "F5", or "EC 07" error codes indicate the speed of the indoor or outdoor fan is operating outside of its normal range.
Error code EC/EL 0C
The “EC” or “EL 0C” error codes indicate the system detects refrigerant leakage.
Error code F4/EC51
The “F4” or “EC51” error codes indicate the indoor or outdoor PCB main chip is not receiving feedback from the EEPROM chip.
Error code P0/PC00
The "P0” or “PC00” error codes indicate an inverter drive error is present.
Error code P1/PC01
The "P1” or “PC01” error codes indicate a voltage error is present.
Error code P2/PC02
The "P2” or “PC02” error codes indicate high-temperature or high-pressure protection of the Inverter Power Module (IPM).
Error code PC 03/PC03
The "PC 03” or “PC03” error codes indicate the internal refrigerant levels are imbalanced.
Error code P4/PC 04/PC04
The "P4”, “PC 04”, or “PC04” error codes indicate an inverter drive error is present.
Interpret LCAC error codes
This article explains how to interpret Light Commercial AC (LCAC) error codes for Pioneer Quantum Series systems without an onboard LED readout.