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T131

T131 - Clean filter reminder

Rheem · Air Conditioning

What does T131 mean?

This is a routine maintenance reminder to clean the air filter. Regular cleaning ensures optimal performance and efficiency.

Common Causes

  • Air filter requires cleaning

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Set the unit mode to Electric or OFF.

  2. 2

    Carefully remove the air filter.

  3. 3

    Wash the filter with mild detergent and water.

  4. 4

    Dry the air filter completely before reinstalling it.

Browse all codes in this manual (48)
Verified technical data. Last updated: April 2026

Related Faults

1 beep1 beep - WiFi Soft Reset initiated3 beeps3 beeps - WiFi Hard Reset initiated3 red flashes3 red flashes — Communication error
Source: Rheem Air Conditioning
Open Manual (Page 33)Search more codes in this manual