Generator brands · South African silent diesel and portable
Bundu Power Silent Diesel, Petrol and Inverter Generators Repaired on Site
We repair and service Bundu Power generators where they stand, anywhere in Gauteng: the yellow single-phase silent diesels outside homes, estates and shops, the three-phase sets at businesses and farms, and the petrol and inverter units. Most calls are a set that did not start when the power failed, a flat battery or a changeover that did not switch. We find the cause and quote before any repair.
Established 2006
20 years of experience
24/7 operations
Technicians on site in 1–2 hours
Free callouts and quotations
One-year warranty
Qualified and certified technicians
We Service & Repair All Generator Brands
All generator makes and models
1 kVA–20,000 kVA capability
The Bundu Power range, from the carport to the plant room
Bundu Power is a South African generator brand. The sets we meet most are its single-phase silent diesels: an acoustic canopy with a diesel engine and alternator inside, a starter battery, a fuel tank and a control panel, standing outside homes, at estate gatehouses and behind shops like the two yellow canopies in our photos.
The range runs from single-phase sets of about 5 kVA, at 3,000 rpm or 1,500 rpm, to three-phase canopies from about 20 kVA to well over 1,000 kVA, plus open-frame petrol generators, inverter-type petrol units and automatic changeover panels. The smallest sets carry the maker’s own-branded engines; larger sets use engines from makers such as FAW, Perkins and Baudouin, with a SmartGen controller on some silent sets and a Deep Sea module on the larger three-phase models. The engine plate, alternator plate and controller front say which is in yours.
The repairs we do most on Bundu Power sets
Did not start when load shedding began: Changeover and ATS problems
On a silent diesel with an automatic changeover: a battery that will not crank, a controller left in manual or stop, or a changeover panel that never sent the start signal. We test each in turn.
Flat batteries and chargers: Battery not charging
A standby set spends weeks waiting on its charger. A battery that is flat between outages points to the charger, the charge alternator or the battery itself; a load test tells us which.
Stale petrol and gummed carburettors: Generator not starting
Petrol left in the bowl of an open-frame or inverter unit for months turns to varnish. Hard starting, surging and running only on choke are the signs; the carburettor is cleaned or replaced and the fuel changed.
AVR faults and no output: Running but no power
The engine runs but the sockets are dead, or the voltage sits high or low: the AVR, the brushes where fitted, the output breaker or the windings, tested before any part is ordered. See AVR repairs.
Controller alarms and shutdowns: Low oil pressure shutdown
The module stops the set on low oil pressure, high temperature, overspeed or a failed start and names the alarm. Low oil pressure is the common one, and as often a sender or a loose plug as real pressure loss; controller alarms explained decodes the rest.
Overload and tripping under load: Shutting down or tripping
A set sized for the lights and the fridge trips when the geyser, kettle and borehole pump come on together. The breaker is doing its job; the fix is in what is connected, or a larger set. Tripping at light load is a different fault.
Read the label before you call
What a service on a Bundu Power set covers
- 01
Plates and hours
The plates and the hour reading decide the oil grade, filters and parts list.
- 02
Engine oil and filters
Oil drained warm and replaced with the manual’s grade; oil, fuel and air filters changed; water drained from the filter bowl.
- 03
Fuel and cooling
Fuel lines and tank checked for leaks, water and sludge; fins and fan on an air-cooled engine, or coolant, hoses and belt on a water-cooled one.
- 04
Battery, charger and controller
Battery load-tested, charger output measured, terminals cleaned; controller settings, alarm log and hour count checked and the auto-start proved.
- 05
Canopy and changeover
Louvres and exhaust clear, door seals sound, earth checked; a simulated mains failure proves the changeover panel starts the set and takes the load.
- 06
Run under load
Voltage and frequency measured under load, then the report and a quote for anything found.
Three-phase Bundu Power sets at businesses and farms
Above the home sizes, Bundu Power’s three-phase canopies serve shops, small factories, farms and borehole pumps, with a water-cooled engine from FAW, Perkins or Baudouin, an alternator with its own AVR and a controller that can run an automatic changeover. Single-phase loads should be spread evenly across the three phases, as single versus three-phase explains, and a set that stalls when the borehole pump starts may simply be too small; the kVA sizing guide shows the arithmetic.
Petrol and inverter Bundu Power generators
The open-frame petrol sets and the quieter inverter units are the portable end of the range, for flats, townhouses and sites where a silent diesel would be too much. They share the faults of any small petrol engine: stale fuel, a fouled plug, a low-oil cut-out that stops the engine on a slope. The inverter units make their 50 Hz electronically, which is why they run sensitive electronics and some hybrid solar inverters that a conventional petrol set cannot; when one gives no output, the inverter module and its cooling are the first suspects. See portable and inverter generators and petrol generators.
Parts, and the other makes we see beside them
Every part is looked up from the plates, not the colour of the canopy: a part made for the set where one is available, otherwise a quality part of the same specification, and the quote names which. A new set’s warranty is between you and the seller; check it before booking repair work on a recent machine.
We Service & Repair All Generator Brands. The same homes and estates run silent diesels from Kipor, Mac Afric and Pramac, and the faults on this page apply to all of them.
Independent service
We Service & Repair All Generator Brands
Onsite Generator Repairs is highly recommended for generator repairs, servicing and maintenance across Gauteng. We repair, service and maintain Bundu Power equipment as part of our work on every make of generator.
Manufacturer warranty claims go through the manufacturer’s own network. If your generator is still under warranty, check the warranty terms before arranging work by anyone else.
Brand names and trademarks belong to their respective owners. Onsite Generator Repairs is an independent service and repair company.
Service areas
Where we work in Gauteng
FAQ
Frequently asked questions
Why did my Bundu Power silent diesel not start when load shedding started?
Look at the controller first: it must be in auto, and any alarm on the screen says why it stopped. A flat battery is the most common cause on a set that waits weeks between outages, then a changeover panel that never sent the start signal. If it cranks but will not fire, suspect air or water in the fuel. Do not keep cranking; see generator not starting.
Is a 1,500 rpm Bundu Power set better than a 3,000 rpm one?
A 1,500 rpm set turns a four-pole alternator at half the speed, so it runs cooler and quieter and wears less for every hour it runs, which is why the larger and longer-running sets use it. A 3,000 rpm set is lighter and smaller and does fine on a few load-shedding hours a day, as long as its oil is changed by the hour meter. See service intervals and oil care.
Why does my hybrid solar inverter refuse the power from my Bundu Power generator?
Most hybrid inverters accept a generator supply only within a narrow band of voltage and frequency, and a set whose speed wanders with the load falls outside it. On a diesel set we check the governor and AVR and set the speed under load; an inverter-type petrol generator makes a steady 50 Hz electronically and is accepted more readily. See frequency and speed problems.
Related pages
Related generator problems
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