Specifications
| Fuel | LPG/Natural Gas |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 14 kW |
| Standby kVA | 14 |
| Emissions | EPA 40 CFR 60 |
| Controller | DC, DC2, RDC, RDC Residential Digital, RDC2 |
| Oil capacity | 1.8 L |
| Alternator | Kohler 2F5 |
| Voltage options | 120 V, 110/220 V, 120/240 V, 120/208 V, 220/380 V, 277/480 V |
| Phase | 1 |
| Power factor | 1 |
| Circuit breaker | 70 A |
| Battery group | 51 |
| Battery cranking | 500 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Dimensions (L×W×H) | 1216×665×733 mm |
| Dry weight | 191 kg |
| Sound level | 67.0 dBA @ 7 m |
Maintenance & consumables
for the Kohler CH740| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 300 hr | find | ||
| Fuel filter | — | 52 hr | find | ||
| Oil filter | Pack first: complete service kit comprising air filter, spark plugs and oil filter. | ×1 | — | 200 hr | find |
| Belt | — | 12 hr | find | ||
| Coolant | — | 52 hr | |||
| Oil | 2.7 L | — | 100 hr |
Common questions
What is the power rating of the Kohler 14RES?
The Kohler 14RES is rated 14 kW standby (14.0 kVA).
What engine does the Kohler 14RES use?
The Kohler 14RES is powered by the Kohler CH740 engine.
What fuel does the Kohler 14RES use?
The Kohler 14RES runs on LPG/Natural Gas.
What is the oil capacity of the Kohler 14RES?
The Kohler CH740 engine in the Kohler 14RES has an oil capacity of 1.9 liters.
What alternator does the Kohler 14RES use?
The Kohler 14RES uses a Kohler 2F5 alternator.
Troubleshooting
9Fault codes
| Code | Meaning | Cause | Remedy |
|---|---|---|---|
| Main Power Overload Shutdown | The generator shuts down due to a main power overload condition. | ||
| Faults Related to Paralleling | Issues arise when paralleling the generator with other systems or units. | ||
| 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 | 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. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
128| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 12 050 01-S | Oil Filter | 8 | Oil filter | PartsGeek kuduparts $32.00 |
| 12 132 02-S | Spark plug | 2 | Spark plug | PartsGeek |
| 24 029 124-S | Adapter, Oil Filter | 1 | Oil filter | PartsGeek |
| 24 032 19-S | Seal, oil front | 1 | Seal | PartsGeek |
| 24 050 01-S | Filter, breather | 8 | Filter | PartsGeek |
| 24 083 08-S | Element, air filter | 1 | Air filter | PartsGeek |
| 24 083 09-S | Element, air filter | 1 | Air filter element | PartsGeek |
| 24 136 08-S | Nipple, Oil Filter | 1 | Oil filter | PartsGeek |
| 24 153 01-S | O-ring | 1 | Seal | PartsGeek |
| 24 153 08-S | O-ring | 1 | Seal | PartsGeek |
| 24 153 21-S | O-ring, oil cooler | 1 | Seal | PartsGeek |
| 24 153 33-S | Seal, Oil Pump Cover | 1 | Seal | PartsGeek |
| 24 153 34-S | O-Ring, Oil Pick-Up | 1 | Seal | PartsGeek |
| 24 381 13-S | Pick-Up Assembly, Oil | 1 | Pump | PartsGeek |
| 24 393 51-S | Kit, oil pump assembly (includes items 12, 13) | 1 | Pump | PartsGeek |
| 24 393 70-S | Pump Assembly, Oil | 1 | Pump | PartsGeek |
| 24 590 01-A | Oil Cooler, 14RCA/L | Oil cooler | PartsGeek | |
| 241927 | Kit, speed sensor | 1 | Sensor | PartsGeek |
| 25 032 06-S | Seal, oil | 1 | Seal | PartsGeek |
| 25 099 26-S | Switch, oil pressure | 1 | Sensor | PartsGeek |
| 25 132 14-S | Spark plug (RFI) | 2 | Spark plug | PartsGeek |
| 25 435 06-S | Kit, starter solenoid | 1 | Kit | PartsGeek |
| 269373 | Alternator Assembly | 5 | Alternator | PartsGeek |
| 358072 | 3/8"-16 UNC-2A THD Thrubolt | 1 | Thrubolt | PartsGeek |
| 52 099 08-S | Switch, oil pressure | 1 | Sensor | PartsGeek |
| 62 590 01 | Oil Cooler, 20RCA/L | Oil cooler | PartsGeek | |
| ADV-6823-A | Air Filter, Spark Plug Location | 1 | Air filter | PartsGeek |
| BKR-8YU11 | Spark Plug, CH20/CH740 | 4 | Spark plug | eBay PartsGeek |
| GM101737 | Lifting bars | 4 | Lifting bar | PartsGeek |
| GM103159 | Oil, Synthetic Quart 5W30 | 3 | Fluid | Amazon eBay $155.00 PartsGeek |
| GM103743 | Emergency Stop Switch (optional) | 1 | Emergency stop switch | PartsGeek |
| GM111084 | Shutdown Switch | 1 | Shutdown switch | PartsGeek |
| GM28823 | Sensor, temperature (oil) | 1 | Sensor | PartsGeek |
| GM29253-GA2 | Controller Wiring Diagram | 1 | Controller wiring diagram | PartsGeek |
| GM29358-B | Point-to-Point Wiring Diagram, Single Phase | 1 | Point-to-point wiring diagram | PartsGeek |
| GM51559 | 3/8"-16 UNC-2A THD Thrubolt | 1 | Thrubolt | PartsGeek |
| GM90304 | Revised RDC2 Controller | 1 | Display | PartsGeek |
| RSP-FT-02-US-91 | Pack first: complete service kit comprising air filter, air pre filter, spark plugs and oil filter. | Air filter | PartsGeek | |
| RSP-FT-04-US-91 | Pack first: complete service kit comprising air filter, air pre filter, spark plugs and oil filter. | Air filter | PartsGeek | |
| 12RES | KOHLER 12RES generator | Service part / kit | PartsGeek | |
| 223316 | Fuse, 10 A, 250 V | 5 | Service part / kit | PartsGeek |
| 230578 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek FridayParts $24.68 | |
| 24 083 02-S | Pre-cleaner | 8 | Service part / kit | PartsGeek |
| 24 083 05-S | Pre-cleaner | 8 | Service part / kit | PartsGeek |
| 24 594 66-S | Cooler, Oil & Diverter Assembly | 1 | Service part / kit | PartsGeek |
| 292937 | Fuse, 20 A, 250 V | 5 | Service part / kit | PartsGeek |
| F-228605 | Kit, voltage regulator | 1 | Service part / kit | PartsGeek |
| GM10064 | PCB assembly (relay controller) | 1 | Service part / kit | PartsGeek |
| GM29671 | PCB assy, relay board 12V | 1 | Service part / kit | PartsGeek |
| ML25KZAG | Kohler 25 HP CH740 Gasoline Engine | 1 | Service part / kit | PartsGeek |
| SBECBA24 | Bell Alarm | 1 | Service part / kit | PartsGeek |
| SBECDMR24 | Alarm Contact Relay | 1 | Service part / kit | PartsGeek |
| X-125-22 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-23 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-24 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-25 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-26 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-27 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-28 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-29 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-3 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-30 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-31 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-32 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-33 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-34 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-35 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-36 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-38 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-39 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-40 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-43 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-44 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-125-5 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-15 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-17 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-18 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-19 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-2 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-20 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-21 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-22 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-23 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-129-24 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-10 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-11 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-12 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-14 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-16 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-17 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-18 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-2 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-20 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-21 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-25 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-6 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-7 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-8 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-465-9 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-11 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-12 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-2 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-3 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-4 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-5 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6024-8 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-1 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-10 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-11 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-12 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-13 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-14 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-16 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-17 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-18 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-19 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-2 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-20 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-21 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-22 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-25 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-3 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-4 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-5 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-6 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-7 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-8 | Hex Head Bolt (Grade 5) | Service part / kit | PartsGeek | |
| X-6238-9 | Hex Head Bolt (Grade 5) | 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 |
|---|---|---|---|
| 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 — g6120 g11124 (Kohler)Brochure — g6130 (Kohler)Spec sheet (Kohler)Spec sheet — 14-20-RESA-Kohler-Residential-Generator (Kohler)Spec sheet — 14-20RESAL-Kohler-Residential-Generator (Kohler)Spec sheet — Kohler.14.20.RESAL.SPEC.g4210.1.15 (Kohler)Spec sheet — g4245 (Kohler)Installation manual — Controllers tt1589 (Kohler)Installation manual — TP-6733 (Kohler)Installation manual — TP-6803 1218N (Kohler)Installation manual — TT-1773 (Kohler)Installation manual — tp6803cmp (Kohler)Installation manual — tp6947 (Kohler)Installation manual — tt1445 (Kohler)Installation manual — tt1566 (Kohler)Installation manual — tt1568 (Kohler)Installation manual — tt1589 (Kohler)Installation manual — tt1596 (Kohler)Installation manual — tt1613 (Kohler)Installation manual — tt1618 (Kohler)Installation manual — tt1619 (Kohler)Installation manual — tt1634 (Kohler)Installation manual — tt1674 (Kohler)Installation manual — tt1708 (Kohler)Installation manual — tt1709 (Kohler)Installation manual — tt1717 (Kohler)Installation manual — tt1718 (Kohler)Reference — GSAPriceList (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 — tp6766 (Kohler)Reference — tp6766cmp (Kohler)Reference — tp7004 (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)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)