Board-level diagnostics and repair of inverter midwall and multi-split systems that trip, short-cycle or stop cooling. In Sandton CBD this is sandton prime work on inverter split systems, attended within about 35 minutes of dispatch.We work across every major brand installed in Sandton CBD, and diagnostics start from the plated design data rather than a guess.Codes are read from the board rather than guessed at, then traced to the actual sensor, valve or drive fault behind them.Building management induction and permit-to-work required for plant rooms. Aircon Repairs & Servicing bookings in Sandton CBD are logged against Block 4 so we can allow for power availability on site.

Typical response window
35 minutes from Sandton
Distance from Sandton CBD
0.4 km
Municipal water hardness
moderate (140 ppm)
Load-shedding schedule
Block 4
Access & compliance
Building management induction and permit-to-work required for plant rooms.
Typical installed systems
Towers on central HVAC and chillers, plus retail and restaurant refrigeration.

Refrigerant data

GasClassificationSuction pressureDischarge pressureTypical use
R410aHFC blend (A1)280-320 kPa at 7 degrees C evaporating2 600-3 000 kPa at 45 degrees C ambientMost inverter splits, ducted systems, VRV/VRF and heat pumps installed since 2005.
R32HFC (A2L, mildly flammable)300-340 kPa at 7 degrees C evaporating2 700-3 100 kPa at 45 degrees C ambientCurrent-generation inverter splits and heat pumps.

Common questions

Can you work after trading hours?

Yes. Retail, restaurant and office work is routinely scheduled at night or early morning under a permit-to-work so trading is not interrupted.

Do you top up gas without finding the leak?

No. A weighed charge into a leaking system is money out the window, so the leak is found and repaired first, then the system is evacuated and charged to the plated weight.

What does an annual service contract include?

Scheduled visits, priority response between visits, a written condition report per unit and fixed labour rates for the contract year.

Is a compressor replacement guaranteed?

Yes. Replacements are done with a system flush and new drier, and both part and workmanship are warranted, provided the original cause of failure is corrected.

Request a callout or quote

Send it straight to our WhatsApp for the fastest response, or call 069 268 0988 / email info@reyds.co.za.