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Rinnai Boiler: Reset the SERVICE reminder (8000 h counter)

Updated · by Aurora Star Tech Inc.

Reset the SERVICE reminder (8000 h counter) on a Rinnai boiler: After 8000 burner hours the display scrolls SERVICE alternating with Good. The counter is reset from the SERV chapter.

Homeowner with a boiler problem? Call (647) 657-2977 or book a service call — licensed technicians across Vaughan and the GTA.

Applies to: E50CRN; E75CRN; E75CRP; E110CRN; E110CRP

How to fix reset the service reminder (8000 h counter): step by step

  1. Enter C123, press MODE until SERV
  2. Hold STORE until SERV flashes once
  3. The hour counter returns to 8000
Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

If the unit shows an error code, look it up: Rinnai Boiler codes

Source: Rinnai E-Combi Series Installation & Servicing Instructions (8U516009 V0116), p.69 (13.3.1). Written in our own words as a summary; always check the original manual.

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.

Emergency Boiler Repair

647-657-2977