Generator Repairs

DOOSAN GENERATOR
CATERPILLAR GENERATOR
CUMMINS GENERATOR
MITSUBISHI GENERATOR
KOHLER GENERATORS
VOLVO PENTA GENERATOR
JOHN DEERE GENERATORS
PERKINS GENERATOR

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ATS & Generator Control Upgrades

Specialists in complex fault finding, control panels & system modernisation.

Avoid power loss and system downtime with fast, expert support. Our technicians diagnose ATS faults and upgrade generator control systems to keep your operation safe, stable and fully compliant.

When your site relies on backup power, there’s no room for error. A failed Automatic Transfer Switch (ATS) or outdated control panel can mean total shutdown — putting your team, tenants or business at risk.

That’s why Reactive Generators focuses solely on commercial and industrial generator systems. We resolve faults quickly and modernise ageing infrastructure to ensure your generator and control system operates exactly as expected — especially during an outage.

Generator and ATS (Transfer system) Faults

Your ATS is responsible for switching your power source when the grid fails. If it malfunctions, your generator may not activate — or worse, may damage your system.

We diagnose and rectify:

  • ATS (Transfer control system) not switching between mains and generator
  • Old and obsolete control systems for Generators and Transfer systems
  • Delayed generator start-up
  • Major/Minor Transfer System failures

Rapid Response, Minimal Downtime

When something goes wrong, every second counts. That’s why our technicians are trained to act quickly — diagnosing and resolving faults on the spot.

As a result, you get less downtime, fewer disruptions and peace of mind. Whether it’s a control issue or ATS malfunction, we move fast to restore power without cutting corners.

Control System Upgrades

Outdated control systems aren’t just a risk — they’re often unsupported and prone to failure. We upgrade your system to meet today’s demands.

Our services include:

  • Installing digital control panels (Comap /Deepsea /Woodward)
  • Integrating SCADA, BMS and remote monitoring systems
  • Custom programming for synchronisation and load sharing
  • Delivering high-capacity generator control solutions for large sites
 
 

24/7 Emergency Service

Power outages and generator faults don’t just happen during business hours. That’s why we provide true 24/7 emergency callouts.

From sudden faults to system-wide failures, our on-call technicians are ready to respond — day or night. You’ll never be left in the dark.

ATS fault finding, repairs & upgrades.

Greg Brereton
Excellent service the Pramac Generator we purchased has not missed a beat over last two year and with remote monitoring suits our requirements. If you need a generator I would contact Hal and team to source it for you.
Harry Symes
Reactive Generators were very helpful and knowledgeable. Their service is second to none and I can't not recommended anyone better.
Nick Vermeulen
Exceptional service regarding marine generator repair, or conversion. Hal and his team offered me a turn key solution to utilise my Kubota marine engine and convert to a newer more reliable power source or fix the outdated alternator. I chose to convert and have the latest technology running from my ever reliable Kubota. Hal designed a system that is so efficient and fully automated on budget, on time, could not be happier. Reactive generators business ethics is unsurpassed, a truly trustworthy company to deal with and not to forget outstanding customer service. Nick V. Brisbane
Rowan McPhee
Hal and the team at Reactive Generators are awesome guys to work with, and would recommend them 100% to anyone who requires their services. Honest, reliable, hard working and great communication with the can do attitude. Which makes them your first choice in anything to do with Electrical and Mechanical services.
Silvio's Electrical
We found Hal and Josh outstanding. No other contractors would even look at the replacement control system because of the age of our generator except for Reactive Generators. Can't recommend them enough!
Matthew Vandenbrink
As a Poultry farmer, power is critical on my farm.. Reactive generators have just installed a brand new Pramac generator as well as refurbishing an existing generator. All control systems have been upgraded to digital/electronic. I can’t say enough about Hal and his team, not only were they price competitive, service with a smile and delivered on time and on budget. I would recommend Reactive Generators to any business requiring critical power needs.
Tanya Jeffrey
Great customer service Hal, thankyou so much for your efforts in supplying our generator and the customer support for the electrician on install. Our community will be very grateful when we are out of power and our pub can still supply cold beer and meals. Can’t wait to catch up for a beer when you are up this way. Cannot recommend this company enough, great work. From all us at Carmila hotel🍺🍺
Brooke Renwick
After being quoted on a replacement alternator from another supplier Reactive Generator we're able to correctly diagnose the issue which ended up being as simple as an adjustment to the automated voltage regulator. Fast and effective service and will be using these guys for all our generator needs moving forward. The mobile service is a huge benefit as well - greatly appreciated guys!
Nami Scanlon
First class service and best technically trained staff i have come across for years. I will only be using reactive generators for all future services and advise from now on. many thanks again Hal. darrell Kru Catering

TOP PRODUCTS

GRW67P

kVA: 67
Engine: Perkins

B1250-C ISO20

kVA: 1250
Engine: Baudouin

KD110

kVA: 110
Engine: John Deere

KH275

kVA: 275
Engine: Doosan