Kohler — Connect replacement 550 controller

Installation

From a Kohler service manual — check it applies to your exact model before use.

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Procedure

1. Reconnect previously removed wiring per wiring diagram manual: TB5 leads V7/V8/V9, TB1-TB4, CT/meter lead V0, P24, P1 (Marathon excitation interface board), P23, P22, prime power kit, other leads
2. Swing rear controller panel up and tighten screws (do not replace cover yet)
3. Replace junction box panel(s) and screws

Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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