Rinnai i-Series+ FFF — Maintenance Indicator
FFF
Maintenance Indicator. This code is a placeholder in diagnostic code history indicating a service provider performed maintenance or service.
Applies to
This maintenance or informational code is displayed by the i-Series+ front-panel control on i-Series+ combi models (IP175199C, IP199199C), as documented in Installation and Operation Manual — i-Series+ 175K and 199K combi boilers (hosted on the Rinnai Canada IP175199C product page). Codes can differ between controller generations, so always check the manual that matches your unit.
- Rinnai i-Series+ Combi
- Rinnai IP060160C
- Rinnai IP090099C
- Rinnai IP090199C
- Rinnai IP120199C
- Rinnai IP150199C
- Rinnai IP175199C
- Rinnai IP199199C
Controller: i-Series+ front-panel control. Source manual: see sources (2025).
Why a code is not a diagnosis
This class of message is informational or maintenance-related: the appliance keeps running (or limits output) until the service is performed. No fault may exist beyond the interval being due.
Safe things to observe
- Book the scheduled service; the appliance will tell you when the interval is reached.
Do not
- Do not clear maintenance messages without the maintenance being performed.
How professional service helps
- A technician performs the manufacturer's scheduled maintenance and resets the counter as part of the service.
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Frequently asked questions
Can I clear this code myself?
Clearing a code without fixing its cause usually just brings it back. Note the code, check the safe items on this page, then call a licensed technician. If your appliance manual describes a user reset for this exact code and it stays away, no call may be needed.
Boiler locked out? Call with the alert text ready.
The brand, model and this alert are passed along when you request service online, so the technician arrives prepared.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
- Installation and Operation Manual — i-Series+ 175K and 199K combi boilers (hosted on the Rinnai Canada IP175199C product page) · accessed September 7, 2026
Facts checked September 7, 2026. Last updated September 7, 2026. Technical reviewer: not yet assigned.