Error Code PC-Ch

Data channel between panel and main control is corrupted

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: PC-Ch displayed alternating ON/OFF on panel PCB

What This Means

Panel communication channel failure; Main micom channel malfunction; Harness pin defect; PCB connector pin corrosion

What actually causes this:

Corroded connector pins or damaged communication wire

First Thing to Check

Inspect panel communication connectors for green corrosion or bent pins

Parts Involved

Panel PCBMain MicrocontrollerCommunication Connector

How to Fix

  1. 1

    Check all panel harness pins for corrosion

  2. 2

    Verify no bent or loose pins in connectors

  3. 3

    Test voltage on communication lines

  4. 4

    Reseat all connectors firmly

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