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ProService Generator Repairs

Johannesburg Generator Specialists

Generator Repairs in Johannesburg

Service
Generator repairs on site
Place
Johannesburg
Hours
Open 24/7
Response
On site within 1 hour

Generator repairs across Johannesburg, whether your set stands beside a Houghton driveway, in a basement plant room off Commissioner Street or behind a family home in Diepkloof. We find the fault where the generator stands and give you a written quote before any work starts.

Call 082 057 4605WhatsApp UsRequest a Quote

Callout fee waived when you accept our written quote. 1-year workmanship guarantee. See prices

White canopied diesel generator with louvred radiator end on brick paving under a carport beside a face-brick wall

Generator Services Across Johannesburg

We repair diesel, petrol and gas generators across Johannesburg, from Rosebank and Parktown to Mondeor, Kensington, Melville, the CBD and Soweto, at any hour of the day or night. We are open 24/7 and arrive within 1 hour for breakdowns; the technician diagnoses the fault where the set stands and quotes the repair in writing before any work starts. ProService Generator Repairs has been in business since 2000. Call or WhatsApp 082 057 4605 with your suburb and what the generator is doing.

Johannesburg sites differ a lot, and we plan each visit around the site. In Houghton, Parkhurst and Melrose we usually work on a canopy diesel beside the driveway, or on a shared set behind a Killarney apartment block. In Marshalltown and Braamfontein the generator often sits in a basement or on a roof, so we arrange building access, parking and the loading bay before we drive in. Workshops in Industria, Aeroton and Ormonde run open-frame three-phase diesels that carry machines all shift.

Supply varies by street. City Power supplies much of Johannesburg, while some areas, such as parts of Soweto and Sandton, are supplied directly by Eskom. Neighbours can therefore lose power at different times, which is why we test a standby set’s automatic start on the visit instead of waiting for the next outage to prove it.

We cover the whole city: the northern suburbs along Jan Smuts and Louis Botha avenues, the south from Glenvista to Turffontein, the east from Kensington to Linksfield, the west from Melville to Industria, the inner city and Soweto. Sandton, Randburg, Midrand and Roodepoort are part of our Johannesburg coverage, each with its own page and suburb list.

Generator Service Areas Across Johannesburg

Six-cylinder turbo diesel engine with injection pump, wiring and a dated fuel filter behind a radiator guard

Soweto

Soweto

Residential and small-business generator repairs, including petrol and diesel sets with starting, fuel and battery faults.

  • Diepkloof
  • Orlando
  • Meadowlands
  • Protea Glen
  • Dobsonville
  • Pimville
Generator services in Soweto →

Greater Johannesburg Generator Service Areas

Sandton, Randburg, Midrand and Roodepoort sit inside our Johannesburg coverage with pages of their own, from Bryanston and Rivonia to Ferndale, Northcliff, Halfway House and Florida. The same team, prices and guarantee apply in all four.

Generator Services in Johannesburg

A Johannesburg callout can be anything from a filter and battery service on a house set in Mondeor to AVR, control-panel and fuel-system repairs on a three-phase office generator in Braamfontein. These are the services we bring to the site.

More generator services in Johannesburg

Quote request · Johannesburg

Get a generator quote in Johannesburg

Send your details and we will come back to you with a quote for the work in Johannesburg. For a breakdown, call or WhatsApp: we are open 24/7 and arrive within 1 hour.

Photos of the generator and the data plate can be sent on WhatsApp.

Add your email (optional)
  • Free written quote before any work starts
  • Callout fee waived when you accept the quote
  • 1-year workmanship guarantee

We use your details only to reply to this enquiry and never sell or share them for marketing. Privacy policy

What happens next

  1. We reply with questions about the generator, or to book a visit.
  2. A technician comes to you. For a breakdown we arrive within 1 hour.
  3. The fault is diagnosed on site and you get a written quote. No work starts until you accept it.

Charlie, lead technician: Degree in Mechanical Engineering, Degree in Electrical Engineering, Diesel Plant Fitter. Generator specialists since 2000.

Common Generator Problems We Diagnose

Johannesburg calls range from Soweto petrol sets that will not pull to inner-city building generators that start but never take the load. Here is what we test for each fault before we recommend a part.

Generator will not start

We test the battery, starter, fuel supply, filters and any shutdown the controller has latched, then replace only the part that failed. On a cold Highveld morning a tired battery is the usual cause.

Low or unstable voltage

We measure output with your real load connected, so we can tell an AVR fault from a weak alternator, loose wiring or a load that is too large for the set.

Low frequency

Frequency follows engine speed. We check the governor, fuel delivery and the load, because an engine that slows under load cannot hold 50 Hz.

Fuel-system problems

Water in the tank, loaded filters, air in the lines or a weak lift pump will stop a diesel set or make it die as soon as it takes load. We find the restriction before we quote.

Generator overheating

We check coolant level, radiator fins, hoses, the fan belt and the load, then pressure-test the system once it has cooled.

Controller and alarm faults

We read the alarm history and test the sensor and wiring behind the code before we condemn an expensive controller.

Generator Not Starting in Johannesburg?

Most no-starts we see in Johannesburg come down to four causes: a battery that cannot turn the starter, fuel that is not reaching the engine, a shutdown the controller has latched, or a set that has gone too long without a service.

We test each in turn, starting with the battery and the controller display, and show you the reading before we recommend a part. You pay for the fault we find, not for a guess.

When the Engine Runs but the Power Is Wrong

If lights flicker, appliances trip or a UPS rejects the supply, we measure voltage and frequency with the real load connected. Steady engine speed with poor voltage points to the AVR, excitation or the alternator windings. Falling frequency points to the engine: fuel delivery, the governor, or more load than the set can carry.

These faults show most clearly when a large motor starts, such as a lift in an inner-city block or a pool or borehole pump at a northern-suburbs home.

Diesel That Has Been Standing

Standby diesel can sit in a tank for months between outages. Water collects, filters load up, and air gets in when a filter is changed without bleeding the system. The engine then starts and dies, or hunts once it takes load.

We inspect the fuel, change the filters, bleed the lines and test the lift pump. If delivery is still weak, we check the injection pump and injectors and quote that work separately.

Generators We Service in Johannesburg

We work on diesel, petrol and gas generators of every size, from a petrol portable in Protea Glen to a three-phase standby set in a Marshalltown office block. Give us the kVA rating from the data plate when you book and we bring the right filters and parts.

  • Diesel standby sets
  • Petrol portables
  • Gas generators
  • Automatic home generators
  • Apartment block generators
  • Office and retail standby
  • Workshop and factory diesels
  • Three-phase commercial sets

Generator Brands We Service

ProService Generator Repairs services and repairs these brands. Share the make and model when you book so we arrive with the right filters and parts.

Residential & Commercial Generator Services in Johannesburg

Homes and complexes

From Houghton family homes to Glenvista townhouse complexes, we service the set, test the battery and charger, and prove that the automatic start works.

Offices, shops and workshops

Rosebank offices, Kensington shops and Industria workshops need a set that takes load, not just one that starts. We test it under load before we leave.

Plant rooms and larger systems

Three-phase sets in basements and business parks: we trace transfer, voltage and cooling faults with the building load connected. Planned maintenance sits on the Johannesburg servicing page.

Why Choose ProService Generator Repairs in Johannesburg?

  • In business since 2000

    Johannesburg generators have been our daily work from the start, from single petrol portables to building standby plant.

  • Engineering depth

    Our lead technician, Charlie, holds degrees in mechanical and electrical engineering and is a qualified diesel plant fitter.

  • Written quote first

    You approve a written quote before any work starts, and the diagnosis is included when you go ahead with the repair.

  • 1-year workmanship guarantee

    Every repair we complete is covered by a 1-year workmanship guarantee.

  • Major brands covered

    We service and repair Perkins, Cummins, FG Wilson and the other generator brands in our brand list.

  • Maintenance plans that put you first

    Plan clients are scheduled ahead of new callouts, and either side can cancel with 30 days’ notice.

How Our Generator Callout Process Works

  1. 01

    Send your location and generator details

    Call, WhatsApp or use the form with your suburb in Johannesburg and what the generator is doing.

  2. 02

    We review the details

    Your description and photos tell us which checks to plan and which parts to bring.

  3. 03

    A technician comes to you

    We are open 24/7. For breakdowns we arrive within 1 hour; services are booked for a time that suits you.

  4. 04

    Charges are explained first

    The callout is R400 – R700 in business hours and R700 – R1,400 after hours. The callout fee is only payable if you do not accept the quotation. If you accept the quotation, the callout fee is waived.

  5. 05

    Diagnosis, then a quote

    The fault is tested on site and quoted in writing.

  6. 06

    Work follows the accepted quote

    Only the work you accept goes ahead, with a 1-year workmanship guarantee.

Frequently Asked Questions

Which parts of Johannesburg do you cover?

We cover Johannesburg North, South, East and West, the CBD and inner city, and Soweto. Sandton, Randburg, Midrand and Roodepoort are part of our Johannesburg coverage too, each with its own page, and the same team and prices apply.

Why do some Johannesburg streets lose power when others don’t?

Supply varies by street. City Power supplies much of Johannesburg, while some areas, such as parts of Soweto and Sandton, are supplied directly by Eskom. A standby set with a working automatic start covers you whichever supplier your street is on.

Can you repair a generator in a CBD basement or on a rooftop?

Yes. Send us the building name, parking or loading-bay details and the contact for building management, and we arrange access before we arrive. Most plant-room repairs are done without moving the set. Planned plant-room services are on the Johannesburg servicing and maintenance page.

How fast can a technician reach me in Johannesburg?

We are open 24/7 and arrive within 1 hour for breakdowns, weekends and public holidays included. Planned services are booked for a time that suits you.

What does a generator callout cost in Johannesburg?

The callout is R400 – R700 in business hours and R700 – R1,400 after hours. The callout fee is only payable if you do not accept the quotation. If you accept the quotation, the callout fee is waived. The written quote is free, and the diagnosis is included when you go ahead with the repair.

Do you repair petrol and gas generators too?

Yes. We repair petrol and gas generators as well as diesel sets, from portables to automatic standby units, and trace their starting, fuel and output faults on site.

My generator runs but the house has no power. Can you fix it?

Yes. We test the changeover, output breaker, AVR and alternator to find where the power stops, then quote the repair.

What do you check first when a Johannesburg standby set will not start on its own?

The battery, its terminals and the charger, because a tired battery is the usual culprit on a cold Highveld morning. Then the starter, the fuel supply and filters, and any shutdown the controller has latched, before we quote the part that failed.

Nearby Generator Service Areas

Need a Generator Repair in Johannesburg?

Contact ProService Generator Repairs for onsite fault diagnosis and generator repairs in Johannesburg and surrounding suburbs. Planned work is on our servicing & maintenance page.

Call 082 057 4605WhatsApp UsRequest a Quote