NTI Trinity FTVN 3 P9 — Sched. Maintenance-call for Service
3 P9
Sched. Maintenance-Call for Service. The scheduled maintenance reminder has been set and its time has expired, so the boiler must be serviced and the timer reset via menu 8.5.2. The table classifies it as Warning.
Applies to
This maintenance or informational code is displayed by the FTVN Series II control on FTVN Series II models (FTVN085, FTVN110, FTVN150, FTVN199 and combis FTVN110C, FTVN150C, FTVN199C), as documented in FTVN Series II Installation Startup Maintenance Instructions, doc 420012001400 Rev 10, Part 13-B Boiler Error Codes (420012001400 Rev 10). Codes can differ between controller generations, so always check the manual that matches your unit.
- NTI Boilers Trinity FTVN
- NTI Trinity FTVN085
- NTI Trinity FTVN110
- NTI Trinity FTVN150
- NTI Trinity FTVN199
- NTI Trinity FTVN110C
- NTI Trinity FTVN150C
- NTI Trinity FTVN199C
Controller: FTVN Series II control. Source manual: 420012001400 Rev 10 (2024-06-15).
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
- FTVN Series II Installation Startup Maintenance Instructions, doc 420012001400 Rev 10, Part 13-B Boiler Error Codes · 420012001400 Rev 10 · accessed September 7, 2026
Facts checked September 7, 2026. Last updated September 7, 2026. Technical reviewer: not yet assigned.