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C5

C5 - Suction pipe sensor fault

Daikin · Air Conditioning

What does C5 mean?

The sensor measuring the temperature of the suction pipe has an open or short circuit.

Common Causes

  • Suction pipe sensor is open or short circuited.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the suction pipe sensor is securely connected.

  2. 2

    Inspect the sensor and its wiring for any signs of damage.

  3. 3

    If damage is found, the sensor and/or wiring should be replaced by a professional.

Browse all codes in this manual (79)
Verified technical data. Last updated: April 2026

Related Faults

A0A0 - External protection activeA1A1 - Indoor PCB failureA2A2 - Malfunction of freezing protection
Source: Daikin Air Conditioning
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