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What is an error code E04 on an LCN 4600?

An error - E 04 - is an indication of a constant activation input from either the "Hold Open" switch or a "Wall Activation" switch when the 4600 power is turned on. This condition also occurs when leaving the programming mode.

The "GREEN" operating indicator LED's on the control box will determine which input is causing the E 04 error code.

  1. If the "HO/ALT ACTION" LED is lit, the hold open switch is turned on. Turning the "hold open" switch off will clear the error.
  2. If the "NORMAL/SEQ" LED is lit, one of the wall actuator switches is either stuck in the "on" position, or has been wired "normally closed" where it should be "normally open".

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