Generator not starting
We trace a failed auto-start through the battery, the start signal and any latched shutdown before we list a single part.
Open 24/7 · We arrive within 1 hour across Gauteng · Established 2000
Bryanston
Generator repairs, servicing and maintenance in Bryanston, where most sets are automatic diesels behind large homes off Main Road and William Nicol Drive. We test the auto-start, battery and voltage on site and quote before any part is changed.
Callout fee waived when you accept our written quote. 1-year workmanship guarantee. See prices

Yes, we repair generators in Bryanston, River Club and Petervale, from automatic home standby sets to shared complex sets and office-park generators, where they stand. We are open 24/7 and arrive within 1 hour for breakdowns; the technician diagnoses the fault and quotes it in writing before starting.
Bryanston, Bryanston East, Bryanston West, River Club and Petervale have a high share of home standby generators. Some are compact canopy diesels beside the garage. Others are larger installations sized for a big house with a pool pump, a borehole, electric gates and an automatic changeover panel. We work on both where they stand.
The test that matters is whether the set starts from the ATS signal after weeks of standing, not whether it fires when someone holds the key. The battery, the charger and the AMF controller decide that more often than a major mechanical failure, so we check those first and finish with a simulated outage.
Office parks along Main Road and Bryanston Drive run three-phase sets that carry air-conditioning and computers, and some complexes in Bryanston East and Petervale share one generator between units. For those sites we book the visit around the tenants or the body corporate and register at the security gate in advance.
Breakdowns attended 24/7. We diagnose first, then quote the repair in writing.
Planned services and maintenance plans for standby sets in Bryanston, booked for a time that suits you.
Customised maintenance contracts and SLAs, quoted in writing after we assess the generator and how it is used.
Servicing, automatic standby faults and electrical output make up most of our Bryanston work.
Oil, filters, coolant and a test of the auto-start circuit on your home standby set.
A maintenance plan that keeps a standby set ready between outages, with plan clients scheduled first.
AMF and ATS faults that leave the house on a dead supply while the generator sits idle.
Voltage that dips when the borehole, pool pump or air-conditioning switches on.
Fuel, starting and cooling faults on residential and office park diesels.
Wider diagnosis when the fault goes beyond the panel or the battery.
Quote request · Bryanston
Send your details and we will come back to you with a quote for the work in Bryanston. For a breakdown, call or WhatsApp: we are open 24/7 and arrive within 1 hour.
What happens next
Charlie, lead technician: Degree in Mechanical Engineering, Degree in Electrical Engineering, Diesel Plant Fitter. Generator specialists since 2000.
Bryanston calls cluster around automatic home sets and the electrical gear around them: the battery, the controller and the changeover.
We trace a failed auto-start through the battery, the start signal and any latched shutdown before we list a single part.
The set starts in manual but the changeover does nothing. We test the AMF output and the ATS as the path that should have started and transferred it.
Lights that dim while the engine sounds normal point to the AVR, the alternator, a breaker or a set sized too small for the motors it starts.
A large home set still depends on a battery that was charged last week. We test the terminals and charger with the battery.
Oil and filters left too long show up as hard starting on the night the set is needed most.
If frequency falls only when the house connects, we check the governor, fuel delivery and the load before blaming the AVR.
A Bryanston standby set that ignores an outage may still crank on a manual command, or it may only click. A click points to the battery or cables. A set that never tries to crank on auto points to the controller or the ATS. A set that turns and will not fire points to fuel.
We confirm which of those it is on the visit, then quote the battery, controller or fuel work that the test supports.
Larger Bryanston homes can hold voltage at idle and then sag when the borehole, pool pump and air-conditioning start together. The cause may be the AVR, the alternator, a breaker, the wiring, or simply more motor load than the set can start at once.
We take voltage and frequency readings together while those loads switch on. Falling frequency at the same moment tells us the engine is losing speed, which is a fuel or sizing question rather than a regulator fault.
Automatic home sets in Bryanston fail at the changeover as often as in the engine bay. We read the alarm history on the panel, test the ATS contactor and its control wiring, and finish with a simulated outage so you see the set start, take the house and hand back.
Aged diesel and a loaded filter are common on sets that wait between outages. We sample the fuel and replace the filters first, and check the lift pump and injectors only when delivery is still weak after that.
Residential standby sets make up most of our Bryanston work, from compact canopies to larger automatic diesels, along with three-phase sets at the office parks on Main Road.
ProService Generator Repairs services and repairs these brands. Send the model and kVA when you book so we bring the right filters.
Bryanston and River Club homes get planned servicing, a battery and charger test and proof that the auto-start works.
Commercial sets along Main Road and Bryanston Drive are tested under the building load, with controller and transfer checks.
Big home and complex sets stay on a maintenance plan, so the changeover is proven before the next outage.
Faults are traced and fixed at the property, with the generator left in place.
We test the changeover itself, because a manual start does not prove the ATS works.
We read AVR output while your pumps and air-conditioning run, not at idle.
You see the fault, the fix and the price in writing before we begin.
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Call, WhatsApp or use the form with your suburb in Bryanston and what the generator is doing.
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Your description and photos tell us which checks to plan and which parts to bring.
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We are open 24/7. For breakdowns we arrive within 1 hour; services are booked for a time that suits you.
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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.
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The fault is tested on site and quoted in writing.
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Only the work you accept goes ahead, with a 1-year workmanship guarantee.
Yes. We repair and service generators on site in Bryanston, Bryanston East, Bryanston West, River Club and Petervale.
Usually, yes. We measure voltage and frequency as the pump starts to see whether the AVR, the alternator or the size of the set is the limit, then quote the fix or advise on load.
Yes. We arrange access with the body corporate or managing agent, repair the set in place and test it with the units connected. Planned servicing is on the Sandton servicing and maintenance page.
The battery may be aged, or the charger may have stopped keeping it topped up. We test both before suggesting a new battery.
Yes. We simulate a supply failure, watch the set start and carry the house, then restore the supply and check that it hands back.
Call or WhatsApp 082 057 4605 with your street, the generator make and kVA, and whether you need a service or a repair.
Contact ProService Generator Repairs for onsite fault diagnosis and generator repairs in Bryanston and surrounding suburbs. Planned work is on our servicing & maintenance page.