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Hi my name is ***** ***** I'm here to help you out! I see your question is unanswered so let's get started. Have you ever had the heat running before on this system?
Okay thanks. Typically a communication error between indoor and outdoor units is caused by a couple of things: 1) communication wiring should be ran in its own conduit or should have a shielded jacket to prevent ambient electronic noise from interrupting the signals. 2) need to make sure wiring is correct and terminated properly at both units 3) there could be an issue with the PCB (printed circuit board) from the factory. I'm attaching a link to the service manual for your system. Please refer to page 48 and 50 for the E1 comm error code.