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snowflakeaircon.sg

Diagnostics · Repair · Servicing

Aircon PCB repair

We diagnose control board faults before ordering any part. Error codes get traced to PCB, sensor, or wiring. We’ll assess first, then confirm whether this is the right scope before you book.

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BCA-Registered10,000+ Cases Completed

What PCB repair covers

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. 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 PCB repair isn't suitable

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 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.

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How a PCB repair works

No ordering an expensive board on a guess. From your first message to a working unit, here is what happens.

  1. You message us

    Tell us the error code or symptom: a code that won't clear, no response, or a unit ignoring the remote. We come back with the likely suspects.

  2. We assess on-site ($30)

    We cross-reference the code and test the cheaper lookalikes first, sensors, wiring, and the receiver, before implicating the board. The $30 rules out work you don't need.

  3. We explain what we found

    Plain language: whether it's the board, a sensor, or wiring, and which board if it is the PCB.

  4. We quote, you decide

    Exact part and labour, with the lead time if the board needs sourcing. Nothing goes ahead without your say.

  5. We repair and verify

    The $30 comes off the repair. We fit the board, then test startup, remote response, and communication before we leave.

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.

Workmanship warranty

We stand behind the repair we carry out, and we are straight about the part of the cover we do not set ourselves.

Labour

30-day labour warranty. If the same fault returns from the repair we did, we come back and the labour is on us, with no second diagnosis fee.

Parts

Parts follow whatever warranty the distributor sets for that component, so the term varies by part. We tell you the coverage before you approve the quote.

Documented PCB cases

Real diagnosis work, not generic service claims. Open the case if the symptom looks familiar.

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Frequently asked questions about aircon PCB repair in Singapore

How much does PCB replacement cost?
It hinges on the brand, model, and which board has failed. Indoor boards, outdoor boards, and wired controllers are priced differently, and some models use proprietary parts with longer lead times. We quote after diagnosis, and the $30 visit is rebated if you proceed.
Can a PCB be repaired rather than replaced?
Sometimes. Component-level repair, replacing a burnt relay or capacitor on the board rather than the whole assembly, can work depending on the fault location and board condition. Some boards are more cost-effective to replace outright; we'll tell you which call this one is.
How long does PCB repair take?
If the replacement board is in stock, the repair is done in the same visit. For less common models, sourcing typically takes 2 to 5 working days. We confirm availability before scheduling.
Do you repair all brands?
Yes. We cover all major residential brands sold in Singapore, including Daikin, Mitsubishi Electric, Panasonic, LG, Samsung, and others. Parts availability varies by model age.

We cover all of Singapore. Find aircon services in your area.

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.

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