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15048

15048 — Free Cooling OAT Thermistor Failure

Carrier · 30XA/XAS/XB/XBP/XW Chillers

What does 15048 mean?

The Outdoor Air Temperature (OAT) thermistor used for free cooling has failed. Free cooling will be disabled.

Common Causes

  • Defective OAT thermistor for free cooling
  • Wiring issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the wiring connected to the free cooling OAT thermistor.

  2. 2

    Inspect the thermistor for physical damage.

  3. 3

    Contact Carrier Service if free cooling remains unavailable.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

1007810078 — High discharge gas temperature, circuit A1007910079 — High discharge gas temperature, circuit B1008010080 — High discharge gas temperature, circuit C
Source: Carrier 30XA/XAS/XB/XBP/XW Chillers
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