Aircon PCB Repair
The PCB controls the unit's logic: startup, temperature regulation, error handling, and communication between indoor and outdoor units. A fault shows up as anything from an error code to a completely unresponsive unit. We test sensors and wiring first, because cheaper parts often mimic board failure. For current rates, see the pricing page.
Not Sure If This Fits?
Tell us the symptom, unit type, and what changed recently. We'll assess and advise whether this is the right next step.
What PCB Repair Covers
Diagnosis and repair of control board faults, after sensor and wiring checks rule out the cheaper causes that mimic PCB failure. Common situations where PCB work fits:
Error code returns after reset
A persistent code points to the PCB, sensor circuit, wiring, or communication path.
Unit ignores remote commands
If batteries and line-of-sight are ruled out, we check the receiver circuit or control board.
No display or response
Once power supply's confirmed, the board, fuse, or control circuit is the next diagnostic step.
When to Start Elsewhere
Don't treat the PCB as the fault until related causes are ruled out. If the board fault isn't confirmed, start with on-site inspection.
Code clears and doesn't return
Monitor the unit first. A one-off fault isn't enough to quote a board replacement.
Unit responds normally but doesn't cool
Cooling diagnosis starts with airflow, refrigerant, compressor, and coil condition.
Drainage or float-switch code
Real issue's likely water backup or a triggered switch, not the PCB.
What We Check Before Quoting
We confirm whether the fault sits with the board, a sensor, wiring, or the controller before sourcing parts.
Fault code and reset behaviour
We cross-reference the displayed code with the manufacturer table and watch what happens after reset.
Sensor and wiring checks
We test thermistors, connectors, and harnesses, because they trigger board-like symptoms.
Board location
If the PCB's implicated, we identify whether it's the indoor board, outdoor board, or wired controller.
Part availability
We match the correct board to the model and quote before ordering or scheduling replacement.
What You Get
Control fault resolved without guessing at an expensive board.
Board fault confirmed first
We separate PCB, sensor, wiring, and controller paths before quoting a replacement.
Correct board sourced
Indoor PCB, outdoor PCB, or controller replacement matched to the exact model.
Operation verified
We test startup, remote response, temperature control, and communication after the repair.
Not Sure What Failed?
If the fault is not confirmed yet, start with an on-site inspection before choosing a repair path.
Aircon PCB Repair FAQ
Ready to Get Started?
Tell us what’s going on. Symptoms, setup, photos, anything we should know. We’ll assess and come back with the right next step.