Kohler — RDC2 Voltage Calibration Using SiteTech
Adjustments · controller
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
- Connect PC to controller via USB
- With generator off, connect multimeter across L1/L2 (AC volts)
- Start generator set
- Compare voltmeter reading to controller display
- Calculate new Genset Calibration Factor Voltage using (Vmeter / Vcontrol) x Fold = Fnew
- Enter new value into SiteTech and click Apply Changes
- Verify voltmeter matches controller display
- Repeat for L2-L3 and L3-L1 if three-phase
- Press OFF to stop generator set
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Example: Voltmeter 241.2V, controller display 240V, old factor 1.0063, new factor 1.0113
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.