Compressor Drive Output Error

Home Appliance Error Codes Toshiba Split AC

Can you still use it? No, unplug it

Who can fix it? Needs an authorized technician

Typical repair time 1 hour – 8 hours

Typical cost SAR 100 to 5,000

What it means

This code appears on Toshiba residential split air conditioners when the fault code is read with the remote check function. It means the inverter board detected a fault in the drive output that powers the compressor, so the compressor is not being driven correctly. The outdoor unit stops and retries, and the fault locks in if it repeats. The same code can mean something else on other brands, and Toshiba commercial units use different codes.

Models covered: Toshiba residential split air conditioners (RAC) that show a two-character check code through the remote check function; Toshiba commercial units use different codes.

Symptoms4

The compressor does not run, or stops shortly after starting.
The indoor unit lamps blink and code 1C is found on check.
The outdoor fan may run with no cooling.
Repeated attempts and stops after each restart.

Possible causes5

A fault in the output circuit or power module (IPM) on the inverter board, the most common cause.
Loose, burned or disconnected compressor lead terminals.
Damaged compressor windings or insulation.
Severe low or fluctuating supply voltage.
Moisture, dust or insects on the outdoor board.

How to diagnose6

Read the code with the remote check function: press and hold the check button, then step through the codes with the timer button until the indoor unit beeps continuously; the code shown then is the fault. Steps vary slightly by remote, so follow the owner's manual.
Turn the unit off at the breaker and do not restart it again and again, as this can add damage.
Switch off at the breaker before opening any panel; the outdoor unit and its inverter board keep a dangerous charge for a while after switch-off.
The technician checks the compressor lead terminals at the compressor and the board.
The technician measures supply voltage and tests the inverter board output and power module using the manufacturer method.
The technician tests the compressor windings and insulation before condemning the board or compressor.

How to fix5

Tighten or replace damaged compressor lead terminals.
Clean and dry the board and fix the supply problem with a voltage protector.
Replace the outdoor inverter board at an authorized service center.
Replace the compressor if its windings are damaged, with evacuation and recharge by a licensed technician.
Run the unit, monitor current and confirm the code does not return.

Repair cost

0–200

200–600

600–1,500

1,500+

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low for terminal faults, rises steeply for an inverter board, and is highest for an inverter compressor.

Prices are rough estimates including the part and the technician’s fee, and vary with brand, model and part source.
Prices last updated: September 2026

Frequently asked questions

Does 1C mean a new compressor?

Usually not. The inverter board or compressor leads are more common causes, and the compressor is replaced only if its windings are proven damaged.

How does 1C relate to 16 and 1D?

All three are compressor drive faults: 16 is position detection, 1D is a locked compressor and 1C is the drive output itself, so the technician checks them together.

Is the repair worth it, or should I replace the unit?

It depends on the unit's age and condition and the price of the board or compressor; ask the service center for a written report before deciding.

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This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

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