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error code displayed on remote control

Error code displayed on remote control — See Service Error Code Chart

Rheem · Tankless Water Heaters

What does error code displayed on remote control mean?

The water heater has detected a problem and is showing an error code on the remote control display. Consult the Service Error Code Chart for specific details and solutions.

Common Causes

  • Water heater has detected a problem

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off all hot water faucets.

  2. 2

    Turn off the water heater using the POWER ON/OFF button on the remote.

  3. 3

    Wait approximately 5 minutes, then restart the water heater.

  4. 4

    Turn on a hot water faucet and check the remote control display.

  5. 5

    If the error code persists, make note of it and contact a qualified service technician.

Browse all codes in this manual (24)
Verified technical data. Last updated: April 2026

Related Faults

88Error 88 — Maintenance required before clearing codeAlarm/Error IndicatorSystem Alert — An issue has been detectedDANGER: Shock HazardDANGER: Shock Hazard — Electrical power is present
Source: Rheem Tankless Water Heaters
Open Manual (Page 74)Search more codes in this manual