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[25]

Error 25 — Input overcurrent of the drive module

Lennox · EL18KSLV Series Outdoor Units

What does [25] mean?

The current going into the compressor drive module is exceeding the normal limits (30A for 48&60k models, 18A for 36k, or 15A for 24k).

Common Causes

  • Incorrect compressor wiring.
  • The power module is faulty.
  • The compressor is faulty.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Solve or correct any failures according to the relevant information provided in the manual.

  2. 2

    Ensure compressor wiring is correct.

  3. 3

    Check the power module and compressor for faults.

Browse all codes in this manual (43)
Verified technical data. Last updated: April 2026

Related Faults

1Error 1 — EEPROM malfunction or damage10Error 10 — Outdoor defrost sensor failure11Error 11 — Suction temperature sensor failure
Source: Lennox EL18KSLV Series Outdoor Units
Open Manual (Page 75)Search more codes in this manual