Kohler — Controller Replacement, Models 14/20RCA/L
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 enclosure roof, press OFF, disconnect utility power
- Disconnect starting battery negative lead first
- Remove two mounting screws, lift controller
- Verify utility power off at AC connections with voltmeter
- Disconnect harnesses, remove old controller
- Reconnect harnesses to new controller, install with screws
- Reconnect battery, reconnect utility power
- Set date/time/exerciser, update firmware, 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.