HVACopediaRinnai · Combi boiler
SS Service Soon reminder
What the control is telling you
Service reminder (when enabled in parameters) showing it is time to flush and service the boiler.
Applies to: I-Series Plus boilers — 150K BTU and smaller and 175K BTU and higher (Combi and Solo)
Likely causes
- Service Soon reminder enabled in Parameter 04
- Selected service interval has been reached
Test and repair steps
- Service and flush the boiler as needed.
- Reset SS by pressing the Central Heating (CH) button on the controller five times within five seconds.
- Confirm Parameter 04 is set to the desired interval: A = disabled, B = 0.5 year, C = 1 year, D = 2 years.
- SS will show again when the selected interval is reached next time.
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Source: Rinnai Troubleshooting I-Series Plus Boiler Diagnostic Codes (800000375), p.47. Summarized in our own words; check the original manual for your model.
Homeowner looking at this code? See what it means for you and when to call a technician.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.