Inverter repairs cover everything from a loose battery cable to a burnt circuit board after a lightning strike. Many faults that look fatal are simple, and some that look small are not worth fixing. This page lists the common faults, what you can safely check before calling anyone, how workshops test units on the bench, when to repair and when to replace, and how warranty claims work. Send one free, no-obligation request and inverter repair workshops and technicians near you quote you directly.
Common inverter faults
- No output: the unit is on but nothing runs. Often a tripped breaker, an isolator left off, a blown fuse or a setting; sometimes a failed power board.
- Beeping and error codes: the inverter is warning you, usually about overload, low battery, high temperature or a lost link with a lithium battery. Note the code and look it up in the manual.
- Overload: too much running at once, or a motor surge. Switch heavy loads off and reset.
- Battery not charging: a wrong battery profile, a lost communication link, a faulty battery or a failed charger stage.
- Fan noise: dust, a worn bearing or a unit running hot in a closed cupboard.
- Lightning damage: dead after a storm, often with burnt boards or blown surge protection.
What to check before you call
Some checks are safe for anyone. Are the breakers and isolators on? Is the display showing a code? Has the battery been run flat? Is the inverter hot, dusty or boxed in? Did a storm pass through? Write down the code, take a photo of the display and the breakers, and note what was running when it failed. Do not open the case: inverters hold dangerous voltage in their capacitors even when switched off, and a damaged or swollen lithium battery must not be charged.
Bench tests: repair or replace?
Workshops test units on the bench with a battery and a load to find out whether the fault is the inverter, the battery or the wiring. Small repairs such as fans, fuses, relays or connectors are often worth doing. Circuit board repairs cost more, and on an old or low-cost unit a new inverter may be the better buy. Cost guides put a diagnostic call out at about R500 to R1,200, small repairs at about R600 to R2,000 and circuit board repairs at about R2,500 to R6,000. Ask for the fault and the price in writing before work starts. If you replace, consider a hybrid inverter so solar can follow.
Warranty claims and preventing repeat faults
If the unit is under warranty, do not let anyone open it first: go back to the seller or installer, who handles the claim with the maker. Keep the invoice, the CoC and photos of the fault. To prevent repeat repairs, ask about surge protection, keep the unit ventilated and free of dust, and have the battery health checked. A good installer can also correct wiring faults that cause repeat trips. Battery problems are covered under inverter batteries.
What to include in your request
- Give the inverter type and size
- Write down the error code
- Say what failed and when
- Mention any storm or lightning
- Say if it is still under warranty
Inverter Repairs for different clients
- Homeowners: a home inverter beeping, tripping or dead after a storm, diagnosed and repaired
- Complexes, estates and body corporates: repairs to gatehouse and pump house inverters so estate security and water keep running
- Offices and home offices: a failed office inverter tested on site so staff and servers get back online
- Shops, restaurants and salons: a fast repair so tills and fridges are back on battery before the next outage
- Farms and smallholdings: lightning damaged inverters on farms collected, bench tested and repaired or replaced
- Clinics, surgeries and care homes: priority repairs for clinics where medicine fridges and lights depend on the inverter
- Factories, warehouses, schools and churches: 3 phase inverter faults traced in plant rooms, with boards repaired or units swapped
- Electricians, installers and security companies: installers sending faulty units to repair workshops for bench tests and board repairs
Frequently asked questions
Where can I find inverter repairs near me?
Is it worth repairing an old inverter?
Can solar inverters be repaired too?
My inverter beeps and shows an error. What does it mean?
Inverter Repairs by province and city
- Johannesburg
- Pretoria
- Centurion
- Midrand
- Sandton
- Randburg
- Roodepoort
- Krugersdorp
- Randfontein
- Germiston
- Boksburg
- Benoni
- Kempton Park
- Alberton
- Vanderbijlpark
- Vereeniging
- Durban
- Pinetown
- Pietermaritzburg
- Richards Bay
- Newcastle
- Ladysmith
- Gqeberha (Port Elizabeth)
- East London
- Kariega (Uitenhage)
- Mthatha
- Cape Town
- Bellville
- Paarl
- Stellenbosch
- George
- Worcester
- eMalahleni (Witbank)
- Middelburg
- Secunda
- Mbombela (Nelspruit)
- Rustenburg
- Brits
- Klerksdorp
- Potchefstroom
- Mahikeng
- Polokwane
- Tzaneen
- Kimberley
- Upington
- Bloemfontein
- Welkom
- Sasolburg