Get a Free Compressor Troubleshooting Guide –

Compressor electronics (CoreSense) are nothing new to the industry and Copeland has been adding them to compressors for over 20 years. Over the last decade, the advancement has been amazing from diagnostics and protection to remote communication.

As a technician, there are a few things that you need to understand when you see them in the field.

How do they work?
What do they do?
What do the codes mean?
How do I fix the issue?

Never walk away from a compressor module that is flashing without understanding what it means and why it’s happening.

Here are links to the HVACR Fault Finder App that will teach and educate you on all of the Copeland modules for North America.

I highly recommend you download it.

iOS –
Google Play –

Compressor Electronics Training –

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