Compressor Start-up Error

What does E59 mean?

The compressor has failed to start properly, which can be due to electrical issues, mechanical binding, or control problems. This prevents the system from generating cooling or heating capacity.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the compressor contactor and associated control wiring for proper operation and secure connections.

2. 4

   Listen for any unusual noises from the compressor during a start attempt, such as humming or grinding, indicative of mechanical issues.