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10091

10091 — Flow controller fault – evaporator flow switch failure

Carrier · 30XA/XAS/XB/XBP/XW Chillers

What does 10091 mean?

The evaporator flow switch within the flow controller has failed. Compressors and the evaporator pump will stop.

Common Causes

  • Defective flow controller
  • Wiring error

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the evaporator flow switch for proper function.

  2. 2

    Check the wiring to the flow controller.

  3. 3

    Contact Carrier Service if the compressors and pump do not restart.

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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