Kohler — Voltage Calibration Using RDC2 Keypad
Adjustments · Controller voltage calibration
From a Kohler service manual covering: 14/20RCA/RCAL, 14RCA, 20RCA, 26RCA, 26RCA/RCAL. Check it applies to your exact model before use.
Applies to: Kohler 14RCA, Kohler 20RCA, Kohler 26RCA, Kohler CH740 / CH1000 / CH1006 engine
Procedure
- With set off, connect DVM to measure output voltage L1-L2 (AC volts).
- Press RUN to start generator set.
- Press Select, navigate to Generator Metering menu.
- Press Select to display Volts L1-L2; compare with voltmeter.
- If incorrect, press Select (flashes), adjust with arrows, press Select to save.
- Wait 30-60 seconds for voltmeter reading to stabilize.
- For three-phase, repeat for L2-L3 and L3-L1.
- Press OFF to stop generator set.
Tools required
- Digital voltmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Fnew = (Vmeter / Vcontrol) x Fold
Full service-parts list: Kohler 14RCA →, Kohler 20RCA →, Kohler 26RCA →
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.