Short cycling, a room that reads five degrees wrong, remotes that talk to nothing. Wiring and sensors verified end to end.
A system that short cycles, overshoots, or insists the room is twenty degrees when it plainly is not usually has a sensor or a wiring fault rather than a refrigerant one.
We verify the return-air and coil sensors against a calibrated probe, check the control wiring end to end, and confirm the board is actually receiving the call it thinks it is.
Where a smart or zoned control has been added to older equipment, we check the two are genuinely compatible rather than merely connected.
More cooling work
Nitrogen pressure test, electronic sniffer, dye where needed. We seal the escape route before any gas goes back in.
Single heads, multi-head systems and older sleeve units all get the same treatment, whoever installed them originally.
Hard-start faults, humming without rotation, tripping breakers. Electrical work carried out and tested under load.
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