What hvac electrical repairs actually involves

A large share of 'refrigeration' breakdowns are actually electrical: a failed capacitor, pitted contactor, loose isolator terminal or a control transformer that has cooked. Because we work on both sides, the electrical fault is diagnosed and repaired in the same visit rather than being handed between two contractors.

Because Rivonia sits within our core Johannesburg footprint, routine visits here do not carry long-distance travel charges. We confirm parking, access control and after-hours arrangements before attending.

Common problems we see in Rivonia

Outdoor unit humming but not starting
Contactor chattering or welded closed
Isolator or supply cable overheating
Control circuit dropping out intermittently

Our process

1Supply, isolator and cable termination inspection
2Capacitor, contactor and relay testing
3Control circuit and safety device verification
4Component replacement and load measurement
5Function test of the full plant

Who this service suits

Commercial refrigeration and HVAC plant
Cold room and freezer room control panels
Residential outdoor units with supply faults