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88

Error Code 88 - Maintenance required before clearing

Rheem · Water Heaters

¿Qué significa 88 ?

This code indicates that maintenance, such as flushing the heat exchanger or replacing a filter, is recommended before the error can be cleared. The water heater will not operate normally until this maintenance is performed and the code is reset.

Causas comunes

  • Heat exchanger requires flushing
  • Water treatment filter needs replacement (if applicable)

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Perform recommended maintenance activities (flushing, filter replacement).

  2. 2

    Turn on the remote control.

  3. 3

    Turn off the gas and water supply to the water heater.

  4. 4

    Press the DOWN adjustment button until the lowest temperature is displayed.

  5. 5

    Press and hold both the DOWN and UP adjustment buttons for 5 to 10 seconds.

  6. 6

    Turn the gas and water supply back on.

Ver todos los códigos en este manual (70)
Datos técnicos verificados. Última actualización: April 2026

Fallas relacionadas

1111 - Gas shut-off valve is not fully open1212 - Gas service interrupted or LP gas low13Hot and cold water lines reversed
Fuente: Rheem Water Heaters
Open Manual (Page 79)Buscar más códigos en este manual