Kohler ES799 troubleshooting: 17 fault codes and symptom-cause-remedy entries from the manufacturer's own service documentation.
Kohler ES799 — full specs, parts & maintenance.
| Symptom | Cause | Remedy |
|---|---|---|
| No build-up. | L Open circuit between battery and field. l Battery discharged. | *Make correct connections. *l Charge battery. |
| Generator output erratic. | L Regulator sensing terminals not connected properly. | *Check terminals 5 and 6 (120 V. connection) or terminals 5 and 7 (240 V. connection). *l Correct connections. |
| Badly worn, dirty or improperly seated brushes. | *Replace, clean or reseat brushes. | |
| S1 to terminal t3 on regulator open. | *Correct connections. | |
| Dirty commutator. | *Clean commutator. | |
| Choke heater circuit failure | The choke valve could ‘stick’ the air cleaner | Check the Ohm value of the resistor with a Volt-Ohmmeter. If faulty and allows higher voltage, it could cause the choke for starting |
| Cranking contactor C contacts do not close when switch is moved to on position | Replace relay C | |
| Cranking reset trips during cranking | Reset the reset button--if plant still does not crank, check for open circuit | |
| Insufficient load | A load of 60 watts or more is needed to start automatic plant. A remote switch can be added to test run these plants--check diagrams | |
| Load relay L dirty or open contacts | Check for dirty or open contacts--replace relay if needed | |
| Center tap missing on three wire automatic plants | Check for loose leads or missing center tap | |
| Starter not engaging | Drive pinion may be spinning. Automotive crank plants only | |
| Battery not being charged properly | Check condition of battery--may be sulfated or have cracked cell. Replace as needed | Check charge switch if left in HAND CRANK position, battery will not be charged |
| Generator faulty on plants with automotive cranking | Check for faulty DC generator--excessive resistance in R2 resistor. If overcharging occurs, R2 resistance may be too little | |
| No outflow (no exciter voltage-into AC volts) | Regulator relay RR could be causing overcharged or undercharged battery--check this after resistor check | Check contacts of relay CC may not be closing to complete battery charging circuit. Check brushes, AC leads, and AC armature for open circuits |
| AC voltage but no exciter voltage | AC brushes not riding on collector rings--check for sticking or excessively worn brushes | Check for open AC lead. Lift AC brushes and check for open circuit in AC armature |
| Check field circuit for open shunt | Open field resistor connection |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Documented causes: L Open circuit between battery and field. l Battery discharged.. See the table for the matching fixes.
Documented causes: L Regulator sensing terminals not connected properly.. See the table for the matching fixes.
Documented causes: The choke valve could ‘stick’ the air cleaner. See the table for the matching fixes.