Specifications
| Fuel | LPG/Natural Gas |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 20 kW |
| Standby kVA | 21 |
| Emissions | EPA |
| Controller | DC, DC2, RDC, RDC Residential Digital, RDC2 |
| Oil capacity | 1.9 L |
| Alternator | Kohler 2F7 |
| Voltage options | 120/240 V |
| Phase | 1 |
| Rated current | 83.3 A |
| Power factor | 1.0 |
| Circuit breaker | 100 A |
| Battery group | 26 |
| Battery cranking | 500 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Dimensions (L×W×H) | 1215×733×802 mm |
| Dry weight | 243 kg |
| Sound level | 69.0 dBA @ 7 m |
Maintenance & consumables
for the Kohler CH1000| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 300 hr | find | ||
| Fuel filter | — | find | |||
| Oil filter | ×1 | — | 200 hr | find | |
| Belt | — | find | |||
| Coolant | — | ||||
| Coolant filter | — | find | |||
| Oil | Recommended cold cranking amps: (CCA) rating for -18_C (0_F) | — | 100 hr |
Common questions
What is the power rating of the Kohler 20RES?
The Kohler 20RES is rated 20 kW standby (21.0 kVA).
What engine does the Kohler 20RES use?
The Kohler 20RES is powered by the Kohler CH1000 engine.
What fuel does the Kohler 20RES use?
The Kohler 20RES runs on LPG/Natural Gas.
What is the oil capacity of the Kohler 20RES?
The Kohler CH1000 engine in the Kohler 20RES has an oil capacity of 2.7 liters.
What alternator does the Kohler 20RES use?
The Kohler 20RES uses a Kohler 2F7 alternator.
Troubleshooting
8Fault codes
| Code | Meaning | Cause | Remedy |
|---|---|---|---|
| GeneratorVoltageImbalance OR GeneratorComBusPhaseDifferenceOOR | Generator was overloaded. | Generator breaker in IQ System Controller tripped, and the generator is disconnected. | The system will try to reconnect the generator in 5 minutes. You should: • Open IQ System Controller door, turn off the generator breaker and turn it on again. (When you open IQ System Controller, the generator breaker lever will not be in ON position) • Ensure you do not overload the system while the generator is running. |
| EnpowerGeneratorVoltHighTrip OR EnpowerGeneratorVoltLowTrip OR EnpowerGeneratorFreqHighTrip OR EnpowerGeneratorFreqLowTrip | Generator voltage and/or frequency out of spec while in generator mode and generator is connected | The generator gets disconnected | |
| GeneratorStartFailed | Generator not starting | The generator does not start as selected in user preferences. | Check if the generator 2-wire start/stop wiring to IQ System Controller is loose. Check whether the generator breaker at the unit was tripped (if so turn the breaker off and then on. Also switch the controller to the auto position), whether the generator is out of fuel, or the starting battery of the generator was dead. Contact your installer or Enphase customer support if the problem persists. |
| GeneratorStopFailed | Generator not stopping | Generator continues to run even though user preferences indicate it should have stopped. | Check if the generator 2-wire start/stop wiring to IQ System Controller is loose. Turn off the generator manually and contact installer or Enphase customer support. |
| GenTHDHigh | High Total Harmonic Distortion (THD) Measured THD is above 25% | Generator power output is not stable and having high THD (THD means total harmonic distortion, which is a metric to measure the power quality. If the THD is high, the performance of your electronics will be affected; for example, you may see flickering lights). | |
| LossOfComm2 | Communication Lost with Secondary Controller |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Battery short circuits | Disconnect the battery before generator set installation or maintenance. Remove all jewelry before servicing the equipment. Use tools with insulated handles. Remove the negative (--) lead first when disconnecting the battery. Reconnect the negative (--) lead last when reconnecting the battery. | |
| Bodily injury and/or equipment damage | Battery short circuits | Disconnect the battery before generator set installation or maintenance. Remove all jewelry before servicing the equipment. Use tools with insulated handles. Remove the negative (--) lead first when disconnecting the battery. Reconnect the negative (--) lead last when reconnecting the battery. Never connect the negative (--) battery cable to the positive (+) connection terminal of the starter solenoid. Do not test the battery condition by shorting the terminals together. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
15| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 25 357 14-S | Lubricant, camshaft (not shown) | 1 | Fluid | PartsGeek |
| 48 099 07-S | Switch, oil pressure | 1 | Sensor | PartsGeek |
| 52 050 02-S | Filter, oil | 1 | Oil filter | PartsGeek |
| 62 032 16-S | Seal, oil | 1 | Seal | PartsGeek |
| 62 041 24-S | Gasket, lifter feed cover | 1 | Gasket | PartsGeek |
| 62 083 04-S | Element, air filter | 1 | Air filter | PartsGeek |
| 62 132 04-S | Spark plug | 2 | Spark plug | PartsGeek |
| GB31613529803 | Terminal Block, Green and Yellow | 1 | Terminal block | PartsGeek |
| GM101737 | Lifting bars | 4 | Lifting bar | PartsGeek |
| GM28823 | Sensor, oil temperature | 1 | Sensor | PartsGeek |
| GM69859 | Terminal Block, Grey | 3 | Terminal block | PartsGeek |
| GM69860 | Terminal Block, Blue | 1 | Terminal block | PartsGeek |
| GM98597-KP | Terminal Block, Green and Yellow | 1 | Terminal block | PartsGeek |
| GM77569 | Original RDC2 Controller | 1 | Service part / kit | PartsGeek |
| GM90304 | Revised RDC2 Controller | 1 | Service part / kit | PartsGeek |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| 25% | |||
| 50% | |||
| 75% | |||
| 100% | |||
| Prime | 100% | 6.4 | 225.0 |
| Standby | 25% | ||
| Standby | 50% | ||
| Standby | 75% | ||
| Standby | 100% |
Available documents
Brochure (Kohler)Brochure — 21-03R Air-Cooled Residential Product Updates - 2021 (Kohler)Brochure — GSA Product List (Kohler)Brochure — RES Consumer Referral Rebate (Kohler)Brochure — Referral Rebate Form EDITABLE (Kohler)Brochure — g6120 g11124 (Kohler)Brochure — g6130 (Kohler)Brochure — g6155 (Kohler)Spec sheet (Kohler)Spec sheet — 14-20-RESA-Kohler-Residential-Generator (Kohler)Spec sheet — 14-20RESAL-Kohler-Residential-Generator (Kohler)Spec sheet — Kohler 20RESCL 2015 specs g4250 (Kohler)Spec sheet — Kohler.14.20.RESAL.SPEC.g4210.1.15 (Kohler)Spec sheet — Kohler.20RESC.g4246.10.15Spec sheet — g4246 (Kohler)Spec sheet — g4247 (Kohler)Installation manual — Controllers tt1589 (Kohler)Installation manual — TP-6733 (Kohler)Installation manual — TP-6803 1218N (Kohler)Installation manual — TT-1482 (Kohler)Installation manual — TT-1770 (Kohler)Installation manual — TT-1773 (Kohler)Installation manual — adv8758 (Kohler)Installation manual — adv9743 (Kohler)Installation manual — g18256 (Kohler)Installation manual — tp6803cmp (Kohler)Installation manual — tp6925 (Kohler)Installation manual — tp7007 (Kohler)Installation manual — tt1445 (Kohler)Installation manual — tt1482 (Kohler)Installation manual — tt1566 (Kohler)Installation manual — tt1568 (Kohler)Installation manual — tt1569 (Kohler)Installation manual — tt1589 (Kohler)Installation manual — tt1596 (Kohler)Installation manual — tt1613 (Kohler)Installation manual — tt1618 (Kohler)Installation manual — tt1619 (Kohler)Installation manual — tt1630 (Kohler)Installation manual — tt1634 (Kohler)Installation manual — tt1674 (Kohler)Installation manual — tt1708 (Kohler)Installation manual — tt1709 (Kohler)Installation manual — tt1717 (Kohler)Reference (Kohler)Reference — Kohler 2017 Referral Rebate Consumer RESReference — Kohler 2019 RES Consumer Referral RebateReference — ReferralRebateForm Editable1 (Kohler)Reference — Rotor Stator Reading Form (Kohler)Reference — g6129 (Kohler)Reference — pb45 (Kohler)Reference — tp6944 (Kohler)Reference — tt1629 (Kohler)Owner's manual — TP-6804 1218M (Kohler)Owner's manual — tp6734 (Kohler)Owner's manual — tp6796 (Kohler)Owner's manual — tp6804 (Kohler)Owner's manual — tp6804cmp (Kohler)Owner's manual — tp6805 (Kohler)Owner's manual — tp6926 (Kohler)Parts manual (Kohler)Parts manual — tp6736 (Kohler)Parts manual — tp6806 (Kohler)Service manual — Choosing-a-Generator-Compatible-with-The-Enphase-Energy-Management-System (Kohler)Service manual — Install 14 20 RESA (Kohler)Service manual — Kohler.Maintenance.Kits.g6131Service manual — sb751 (Kohler)Service manual — tp6735 (Kohler)Service manual — tp6803 (Kohler)