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Toshiba Carrier / Toshiba Carrier 26 High Wall

Toshiba Carrier P15 error code

The Toshiba Carrier table lists P15 as gas leakage detected. It says there may be gas leakage from a pipe or connecting part and directs checking gas leakage.

Urgency
stop use
Verified
Jul 31, 2026
Fix path
Technician

What it means

The Toshiba Carrier table lists P15 as gas leakage detected. It says there may be gas leakage from a pipe or connecting part and directs checking gas leakage.

Urgency

Likely causes

  1. Refrigerant gas may be leaking from a pipe
  2. A flare or connecting part may be leaking
  3. The refrigerant circuit needs leak testing and repair

Homeowner fix

Turn the system off, ventilate the area if you suspect a leak, and do not restart it. Do not tighten fittings or handle refrigerant lines.

When to call a pro

Call a licensed HVAC technician for P15. Tell them Toshiba Carrier identifies P15 as gas leakage detected from a pipe or connecting part.

This code points to refrigerant or sealed-system work - get repair quotes from contractors in your area.

Get repair quotes

Repair vs replace

A connection leak may be repairable. Compare replacement only if a coil, compressor, or major refrigerant circuit repair is confirmed on an older system.

See Toshiba Carrier mini-splits

Your Toshiba Carrier model

Toshiba Carrier 26 High Wall model pages in the Toshiba Carrier catalog help compare this repair path with current replacement options.

For your technician

Technician note: perform refrigerant leak diagnostics at pipes and connecting parts, repair leak source, evacuate, and recharge per applicable procedure. Page context: Toshiba Carrier maps this display to the Toshiba Carrier 26 High Wall line; source: Toshiba Carrier RAV High Wall 12K-36K Installation Manual, Section 14 Troubleshooting, Error codes and parts to be checked; display convention: match the letter P and fifteen marker exactly before comparing neighboring codes.

Which systems show it

Toshiba Carrier 26 High Wall

Related troubleshooting

Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.

Related codes

Source

Toshiba Carrier RAV High Wall 12K-36K Installation Manual, Section 14 Troubleshooting, Error codes and parts to be checked
Document
Toshiba Carrier RAV High Wall 12K-36K Installation Manual, Section 14 Troubleshooting, Error codes and parts to be checked
Sourced Jul 2026

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