Generac Power Systems 0043734, 0043733, 0046264 Troubleshooting Guide, Problem Cause Correction

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Section 5 — Troubleshooting

Guardian Liquid-cooled 40 kW Generator

5.1TROUBLESHOOTING GUIDE

PROBLEM

CAUSE

CORRECTION

The engine will not crank.

1.

Fuse blown

1.

Replace fuse.

 

2.

Loose, corroded or defective

2.

Tighten, clean or replace

 

 

battery cables

 

as necessary.

 

3.

Defective starter contactor

3.

*

 

4.

Defective starter motor

4.

*

 

5.

Dead Battery

5.

Charge or replace battery.

 

 

 

 

 

The engine cranks but

1.

Out of fuel

1.

Replenish fuel.

will not start.

2.

Defective fuel solenoid (FS)

2.

*

 

3.

Open #14 wire from

3.

*

 

 

engine control board

 

 

 

4.

Defective spark plug(s)

4.

Clean, re-gap or replace plug(s).

 

5.

Dirty/Blocked air filter

5.

Clean or replace as required.

 

 

 

 

 

The engine starts hard

1.

Air cleaner

1.

Check, clean or replace air cleaner.

and runs rough.

 

plugged or damaged

 

 

 

2.

Defective spark plug(s)

2.

Clean, re-gap or replace plug(s).

 

3.

Dirty/Blocked air filter

3.

Clean or replace as required.

 

 

 

 

 

The engine starts, but then

1.

Engine oil level low

1.

Check oil and add oil as needed.

shuts down.

2.

Defective low oil

2.

*

 

 

pressure switch

 

 

 

3.

Defective high temperature

3.

*

 

 

switch

 

 

 

4.

Defective control board

4.

*

 

5.

Low coolant level

5.

Check coolant level, repair leaks

 

 

 

 

and refill.

 

 

 

 

 

The Auto/Off/Manual switch

1.

Defective switch

1.

*

is set to OFF, but the engine

2.

Defective control board

2.

*

continues to run.

 

 

 

 

 

 

 

 

 

There is no AC output from

1.

Generator main line circuit

1.

Reset circuit breaker

the generator.

 

breaker open

 

to ON (or closed).

 

2.

Generator internal failure

2.

*

 

 

 

 

 

There is no transfer to

1.

Generator main line circuit

1.

Reset circuit breaker

standby after utility

 

breaker open

 

to ON (or closed).

source failure.

2.

Defective transfer switch coil

2.

*

 

3.

Defective transfer relay

3.

*

 

4.

Transfer relay circuit open

4.

*

 

5.

Defective control logic board

5.

*

*Contact your nearest Generac/Guardian Authorized Dealer for assistance.

20 Generac® Power Systems, Inc.

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Contents 0046262, 0046263 Introduction Authorized Dealer LocationIntroduction Inside Front Cover General Hazards Electrical Hazards Generator Prepackaged Transfer SwitchUNPACKING/INSPECTION Generator AC Connection SystemsMain Circuit Breaker SpecificationsEngine Protective Devices ‹ 1.8.2 Generator and Load Compatibility Fuel Requirements Recommendations‹ 1.9.1 Conversion to LP GAS Vapor Coolant Emissions Control System‹ 1.12.1 AIR Fuel Ratio Controller Nfpa Standards Standby Generator InstallationBasic Standby Electric System Other Published StandardsMethod Transfer Switch Start Signal Connections‹ 2.6.1 PRE-PACKAGED Type Switch Grounding the GeneratorPreparation Before START-UP Battery Installation‹ 2.7.1 Vented Batteries ‹ 2.8.3 Fuel System ‹ 2.8.2 Transfer Switch‹ 2.8.1 Prior to Initial START-UP ‹ 2.8.4 Generator SET LubricationUsing the AUTO/OFF/MANUAL Switch Engine Heater Sequence of Automatic Operation‹ 3.2.3 Manual Position Weekly Exercise Cycle Checking the Engine OIL LevelChanging the Engine OIL and Filter Changing the Engine AIR Cleaner‹ 4.2.2 OIL and Filter Change Procedure ‹ 4.2.1 Engine OIL Recommendations‹ 4.5.1 Battery Replacement Battery MaintenanceSpark Plugs Overload Protection for Miscellaneous MaintenanceCooling System DC Fuse‹ 4.11.1 Removal from Service OUT of Service Procedure‹ 4.11.2 Return to Service Service Schedule SYSTEM/COMPONENT Procedure FrequencyTroubleshooting Guide Problem Cause CorrectionElectrical Data TS1 Generator D4992-A Guardian Liquid- Panel 4.3L Drawing No Section Wiring Diagram Control Panel Model No KW Generators No D6975 EC1 ACT Drain Pan Oil QTY Description Base Frame Assembly M6 Hinge Panel Face Panel BTM & Back Control Exploded Views and Parts Lists Cover Plate AVR ALT Leads Sensing Wire QTY To Engine Flywheel Washer Lock M12 Exploded Views and Parts Lists Engine 4.3L GM Exploded Views and Parts Lists MOUNT, Engine R & L KIT Radiator Copper Brass DIA. Clamp Assembly 2 Compartment To Engine Front NUT Wing 1/4-20 Nylk To Stepper Motor Support Solenoid NAT GAS Attach to REGULATOR, N/G R600S Exploded Views and Parts Lists Muffler Catalyst 4.3L Assembly Motor Stepper To Thermostat Housing Guardian Liquid-cooled 40 kW Generators Guardian Liquid-cooled 40 kW Generators MANUFACTURER’S Emission Control System Warranty Coverage Your Warranty Rights and ObligationsPURCHASER’S/OWNER’S Warranty Responsibilities Emission Control System Warranty Emission Related Parts Include the FollowingWarranty Schedule This Warranty Shall not Apply to the Following

0043735, 0043734, 0046262, 0046263, 0046264 specifications

Generac Power Systems has established itself as a leader in the power generation industry, best known for its wide range of products designed for various power needs. Among its offerings are model numbers 0043733, 0046264, 0046263, 0046262, and 0043734. Each unit reflects Generac's commitment to innovation, reliability, and efficiency in providing backup power solutions.

The Generac model 0043733 is a powerful portable generator known for its robust performance and user-friendly design. It typically features a high starting wattage, capable of powering essential appliances during outages. With a compact design and ergonomic handle, it ensures easy transportability, making it an excellent choice for outdoor activities or emergency backup. This model often incorporates advanced technology such as digital watt meters for real-time monitoring and fuel level indicators to enhance user convenience.

Moving on to model 0046264, this unit is engineered for reliability in home standby applications. Its automatic transfer switch allows for seamless switching from grid power to generator power in the event of an outage. This ensures a continuous power supply without any manual intervention. Generac's Quiet-Test technology makes this model exceptionally quiet, operating at a lower decibel level compared to traditional generators, enhancing its suitability for residential areas.

The 0046263 model is similar to the 0046264 but is designed for slightly different power requirements and configurations. It offers a range of customizable options, allowing users to tailor the system to their specific needs. Advanced monitoring capabilities often come standard, enabling users to track performance and receive alerts via smartphone or other devices.

Model 0046262 is also tailored for homeowners, focusing on versatility and efficiency. It usually features a highly efficient engine, capable of providing substantial power while optimizing fuel consumption. Its sturdy build ensures durability, making it suitable for various weather conditions.

Lastly, the 0043734 model is designed for commercial use, capable of handling larger power needs. It typically comes equipped with technologies such as remote monitoring and diagnostics, making it easier to maintain and service. With a heavy-duty construction, this model is built to withstand demanding environments while providing reliable, uninterrupted power.

In summary, Generac Power Systems offers a diverse range of backup power solutions through models such as 0043733, 0046264, 0046263, 0046262, and 0043734. With features focusing on portability, reliability, efficiency, and advanced technology, these models cater to various power requirements, ensuring customers can find the ideal generator for their needs.