Compressor Position Detection Circuit Error

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 cannot determine the rotor position of the compressor motor, which it needs to drive the compressor at the right timing. The start fails, the outdoor unit stops and retries, and the fault then locks in. 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.

Related codes: 141C1D1F

Symptoms4

• The compressor tries to start and stops within seconds.
• The indoor unit lamps blink and code 16 is found on check.
• The outdoor fan may run while the compressor does not.
• No cooling at all while the fault is active.

Possible causes5

• The three compressor leads are loose, disconnected or in the wrong order.
• A fault in the position detection circuit on the outdoor inverter board.
• A damaged or unbalanced compressor winding.
• A mechanically seized compressor that will not turn even when powered.
• Severe voltage drop at start-up.

How to diagnose6

1. 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.
2. Turn the unit off at the breaker and do not restart it again and again, as this can add damage.
3. 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.
4. The technician checks the compressor lead terminals at the compressor and the board for order and condition.
5. The technician measures the compressor winding resistances, compares the three windings with each other and the manufacturer specification, and checks insulation.
6. If the leads and windings are good, the inverter board and its position detection circuit are tested.

How to fix5

1. Reconnect the compressor leads in the correct order and replace damaged terminals.
2. Fix the supply problem and fit a voltage protector.
3. Replace the outdoor inverter board at an authorized service center.
4. Replace the compressor if its windings are damaged or it is seized, with evacuation and recharge by a licensed technician.
5. Run the unit and confirm the compressor starts smoothly and the code does not return.

Repair cost

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

The cost is low when the fault is in the lead terminals, rises steeply for an inverter board, and is highest if a new compressor is needed.

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