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Mr Cool P6 Error Code- How to fix?

When it comes to heating and cooling homes, Mr Cool HVAC systems are well known and highly regarded for their performance and efficiency. But like all tech gadgets and appliances, the unexpected can happen, causing the equipment to display certain error codes like the P6 error code. Dealing with the Mr Cool P6 error code can be frustrating, especially if you’re unsure what’s causing it. Fortunately, there’s usually a simple fix for this issue that can keep your HVAC system operating at its best.

Understanding the Mr Cool P6 Error Code

The P6 error code on a Mr Cool HVAC system typically indicates a thermal protection device activation. This is often the result of overloading, which can occur when the system is overstressed during periods of high demand. A P6 error code may also mean there is an issue with your system’s compressor or pipes being clogged. In essence, the P6 error means your HVAC is working too hard or not efficiently enough — a situation that can cause significant discomfort if not addressed promptly.

How to Fix the Mr Cool P6 Error Code

When faced with a P6 error code on your Mr Cool HVAC system, the first thing to do is conduct a basic troubleshooting. Check your system for any signs of overloading, such as unusual noises or abnormal heat being generated. If you notice anything abnormal, try reducing the strain on your system by lowering your thermostat setting or using supplemental cooling methods such as fans.

If the error persists, it might indicate a problem with the system’s compressor. In this case, it is advisable to hire a professional HVAC technician to diagnose and resolve the issue.

Some DIY Steps to Address the P6 Error Code

If you’re comfortable working with your Mr Cool HVAC system, there are a few steps you can also take to attempt to troubleshoot and clear the P6 error code:

  • Reset the system: Sometimes, all it takes to clear the error code is a simple system reset. To do this, disconnect the power supply, wait for a few minutes, then reconnect it back. This process can clear minor glitches that might be causing the P6 error code.
  • Check the compressor and condenser coils: Observe closely if your compressor is overheating or the condenser coils are dirty. These could possibly trigger a P6 error code. Cleaning the condenser coils or replacing a malfunctioning compressor might resolve the issue.


While the P6 error code can be distressing, it’s important to remember that this is merely your HVAC system’s way of communicating that there’s an issue that needs addressing. By properly identifying the root problem and taking the necessary steps, you can restore your Mr Cool HVAC system to excellent working condition. But, always remember, damage can occur if incorrect measures are taken. If overcoming the Mr Cool P6 error code seems complex, don’t hesitate to reach out to a professional HVAC technician. Your comfort – and the longevity of your HVAC system – is certainly worth it.

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