Kohler — Controller Replacement, Model RCL (RCL, RCLA, RCLB)
Repair & overhaul
From a Kohler service manual covering: 10RESV, 12RESV, 14RCA, 14RES, 20RCA, 20RES, 24RCL, 30RCL, 38RCL, 38RCLB, 48RCL, 48RCLB…. Check it applies to your exact model before use.
Applies to: Kohler 10RESV, Kohler 12RESV, Kohler 14RCA, Kohler 14RES, Kohler 20RCA, Kohler 20RES, Kohler 24RCL, Kohler 30RCL, Kohler 38RCL, Kohler 38RCLB, Kohler 48RCL, Kohler 48RCLB
Procedure
- Open/remove enclosure service door
- Press OFF, disconnect utility power
- Disconnect starting battery negative lead first
- Remove customer connection access panel, verify power off with voltmeter
- Remove two mounting screws, lift controller, disconnect P1/P2/P4/P5/P6
- Remove old controller, reconnect harnesses to new controller
- Install controller, replace access panel
- Reconnect battery and utility power
- Update firmware, set date/time/exerciser, run Controller Setup and Voltage Calibration
Tools required
- voltmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Kohler 14RCA →, Kohler 14RES →, Kohler 20RCA →, Kohler 20RES →, Kohler 24RCL →, Kohler 30RCL →, Kohler 38RCL →, Kohler 48RCL →, Kohler 48RCLB →
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.