P6 Error CodeUpdated 4 days ago

Introduction

The "P6" error code indicates IPM module protection. This article is for Vertex Ducted Central Split (DYC-18) systems.

Cause: The compressor drive module is operating abnormally.

Check whether the power supply is normal. The power supply voltage is 208-230V.
Check if the heat dissipation of the condenser is normal, ensuring there are no dirty blockages, short circuits in the air supply and return ports, etc.
Measure the resistance between the compressor UWV (normal is within 20Ω) and the resistance between the UVW and ground (normal is infinite, MΩ level). If the compressor resistance is abnormal, replace the compressor, otherwise proceed to the next step.
Open the refrigerant heat dissipation cover and check whether the heat dissipation silicone grease is evenly applied. If abnormal, reapply the silicone grease. Otherwise, proceed to the next step.
If the above steps are normal, run the unit and observe whether the compressor is abnormal, such as an abnormal sound, excessive current, etc. If not, replace the compressor.
Check whether the system has poor heat dissipation. In addition, check whether the module is overheating or overcurrent due to the mixing of incompressible gas, etc. If not, replace the main control board.

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