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Toshiba 14 fault code

Toshiba air conditioning

What the Toshiba 14 fault code means, from the manufacturer's own service literature, and the UK models it applies to.

What it means

Inverter over-current (short-time limit)

Block 02 (outdoor PCB). Current on the inverter circuit exceeded its limit in a short time — inverter PCB / IGBT failure, or compressor current above limit / locked rotor.

Safety: Safe isolation before disconnecting the compressor or testing the inverter board — capacitors hold charge.

Source: Toshiba service manual SVM-19001-3 (Seiya) / SVM-20015-4 (Shorai Edge) §11-4, Table 11-4-1

UK models this code applies to

Tap yours to open 14 on that machine.

Wall-mounted49
Cassettes17
Ducted10
Ceiling suspended10
Floor consoles1
Floor-standing4
Indoor and outdoor pairs1
Outdoor units87
Other models30

14 on these comes from each model's own manual, which may not match the meaning above — tap yours to read it.

Wall-mounted33
Ducted10
Floor consoles2
Multi-split outdoor units13
Outdoor units21

Now the harder half: proving what caused it

14 names a symptom, not a root cause. In the app, the same code opens a guided investigation: what to measure first, the expected values for your exact model, and an honest verdict — including “nothing in this machine is broken” when that's what the readings say.

Chase 14 on your machine →

Free, no sign-up. Pick the model: where we hold a chart for it, it takes you through one question at a time.

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