Kohler Series S340 — Inphase Monitor (Acc. 34) Troubleshooting Test
Testing & diagnosis
For the Kohler Series S340, from the Kohler service manual.
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Procedure
- Connect a voltmeter between terminals NA and EA on the transfer switch; set scale to at least twice the system phase-to-phase voltage.
- Manually start the generator set; after it reaches maximum output voltage the meter needle should sweep back and forth at a regular rate between 0 Volts and about twice the system voltage.
- Place the test switch to simulate normal source failure; transfer should occur when the meter indicates approximately 0 Volts.
- Place test switch in AUTOMATIC position; the load should retransfer back to normal after time delay when the meter reads approximately 0 Volts.
- Immediate retransfer may be accomplished by manually opening the generator set emergency source circuit breaker.
- Disconnect and remove the voltmeter.
Tools required
- Voltmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.