{"product_id":"fenix-fx30-u1-u3-xc-digital-control-w-wifi-for-club-spirit-cilindro-and-virta-series-sauna-heaters","title":"Fenix FX30-U1-U3-XC Digital Control w\/WiFi for Sauna Heaters","description":"\u003c!-- Harvia Fenix FX30-U1-U3-XC - Full Control Unit with WiFi for Club, Spirit, Cilindro, Virta --\u003e\u003c!-- SKU: FX30-U1-U3-XC | Max 7kW\/240V (1PH) or 10.5kW\/208V (3PH) | Full unit - panel + power unit --\u003e\u003c!-- Fenix successor to CX30-U1-U3-XW | 4.3\" touchscreen | AI learning | MyHarvia 2 | NOT for Combi --\u003e\u003c!-- Expandable with LTY45 | 3 presets | Smart timer | OTA updates | 3.4\"W x 1.0\"D x 4.4\"H --\u003e\u003c!-- 1 document: Installation and Operation Manual | PDF: Harvia-Fenix-and-Xenio-Control-IOM.pdf --\u003e\n\u003cstyle\u003e\n  .sl { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #1a2a3a; max-width: 900px; margin: 0 auto; line-height: 1.6; }\n  .sl * { box-sizing: border-box; }\n  .sl h4 { font-weight: 700 !important; color: #0f172a !important; margin: 1.5rem 0 0.5rem; line-height: 1.3; }\n  .sl h5 { font-weight: 700 !important; color: #0f172a !important; margin: 0 0 0.5rem; line-height: 1.3; }\n  .sl-hook { font-weight: 500 !important; line-height: 1.75 !important; color: #0f172a !important; padding: 1.1rem 1.4rem; background: #e8f0fa; border-left: 3px solid #2563a8; border-radius: 0 6px 6px 0; margin: 1.5rem 0; }\n  .sl-badges { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 1.75rem; }\n  .sl-badge { background: #e8f0fa; color: #2563a8; font-size: 12px; font-weight: 600; padding: 5px 11px; border-radius: 4px; border: 1px solid #bfd4ef; white-space: nowrap; }\n  .sl-desc p { font-weight: 500 !important; line-height: 1.75 !important; color: #0f172a !important; margin: 0 0 1rem; }\n  .sl-desc p:last-child { margin: 0; }\n  .sl-spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }\n  .sl-spec-table tr:nth-child(odd) { background: #f8fafc; }\n  .sl-spec-table td { padding: 9px 12px; border: 1px solid #e2e8f0; vertical-align: top; }\n  .sl-spec-table td:first-child { color: #64748b; width: 52%; }\n  .sl-spec-table td:last-child { font-weight: 700 !important; color: #0f172a !important; }\n  .sl-spec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; align-items: start; }\n  .sl-spec-tables { min-width: 0; }\n  .sl-spec-image { min-width: 0; }\n  .sl-spec-block { margin-bottom: 1.5rem; }\n  .sl-spec-block h4 { font-size: 16px; font-weight: 700 !important; color: #0f172a !important; margin: 1.5rem 0 0.6rem; padding-bottom: 0.4rem; border-bottom: 2px solid #2563a8; display: inline-block; }\n  .sl-inc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1.25rem; }\n  .sl-inc-item { font-weight: 500 !important; color: #0f172a !important; padding: 10px 0 10px 22px; position: relative; border-bottom: 1px solid #e2e8f0; line-height: 1.5 !important; }\n  .sl-inc-item::before { content: \"\"; position: absolute; left: 4px; top: 16px; width: 6px; height: 6px; border-radius: 50%; background: #2563a8; }\n  .sl-feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }\n  .sl-feat { background: #fff; border: 1px solid #e2e8f0; border-radius: 6px; padding: 0.9rem 1rem; }\n  .sl-feat-title { font-weight: 700 !important; color: #0f172a !important; margin-bottom: 6px; display: flex; align-items: center; gap: 7px; line-height: 1.3; }\n  .sl-feat-title::before { content: \"\"; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #2563a8; flex-shrink: 0; }\n  .sl-feat p { font-weight: 500 !important; color: #0f172a !important; line-height: 1.6 !important; margin: 0; font-size: 14px; }\n  .sl-brand1 { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; padding: 1.5rem 0; }\n  .sl-brand-img { width: 100%; height: auto; border-radius: 8px; display: block; }\n  .sl-brand-tag { display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase; color: #2563a8; background: #e8f0fa; border: 1px solid #bfd4ef; border-radius: 4px; padding: 4px 10px; margin-bottom: 0.75rem; }\n  .sl-brand1 h4 { font-size: 22px !important; font-weight: 700 !important; color: #0f172a !important; margin: 0 0 0.75rem; line-height: 1.3 !important; }\n  .sl-brand1 p { font-weight: 500 !important; line-height: 1.75 !important; color: #0f172a !important; margin: 0 0 0.9rem; }\n  .sl-brand1 p:last-child { margin: 0; }\n  .sl-check { list-style: none; padding: 0; margin: 1rem 0 0; }\n  .sl-check li { font-weight: 500 !important; line-height: 1.6 !important; color: #0f172a !important; padding: 10px 0 10px 22px; position: relative; border-bottom: 1px solid #e2e8f0; }\n  .sl-check li:last-child { border-bottom: none; }\n  .sl-check li::before { content: \"\"; position: absolute; left: 4px; top: 16px; width: 7px; height: 7px; border-radius: 50%; background: #2563a8; }\n  .sl-check li strong { color: #0f172a !important; font-weight: 700; }\n  .sl-notice { background: #eff6ff; border: 1px solid #bfd4ef; border-radius: 6px; padding: 0.9rem 1.1rem; margin-bottom: 1.5rem; font-weight: 500 !important; color: #1e3a5f !important; line-height: 1.6 !important; font-size: 14px; }\n  .sl-notice-yellow { background: #fffbeb; border: 1px solid #fcd34d; border-radius: 6px; padding: 0.9rem 1.1rem; margin-bottom: 1.5rem; font-weight: 500 !important; color: #78350f !important; line-height: 1.6 !important; font-size: 14px; }\n  .sl-warranty { background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 6px; padding: 1.25rem 1.5rem; }\n  .sl-warranty p { font-weight: 500 !important; color: #0f172a !important; line-height: 1.7 !important; margin: 0; }\n  .sl-manual { background: #fff; border: 1px solid #e2e8f0; border-radius: 6px; padding: 1.25rem 1.5rem; margin-bottom: 1.5rem; }\n  .sl-manual-item { margin-bottom: 1.25rem; padding-bottom: 1.25rem; border-bottom: 1px solid #e2e8f0; }\n  .sl-manual-item:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }\n  .sl-manual-item h6 { font-size: 14px; font-weight: 700 !important; color: #0f172a !important; margin: 0 0 0.5rem; }\n  .sl-doc-link { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 500; color: #4a5568; background: #fff; border: 1px solid #d1d5db; border-radius: 5px; padding: 8px 14px; text-decoration: none; }\n  .sl-doc-link:hover { background: #e8f0fa; border-color: #bfd4ef; color: #2563a8; }\n  .sl-divider { border: none; border-top: 1px solid #e2e8f0; margin: 1.75rem 0; }\n  @media (max-width: 768px) {\n    .sl-feat-grid { grid-template-columns: 1fr 1fr; }\n    .sl-spec-grid { grid-template-columns: 1fr; gap: 1.5rem; }\n    .sl-brand1 { grid-template-columns: 1fr; gap: 1rem; padding: 1rem 0; }\n    .sl-brand1 h4 { font-size: 18px !important; }\n  }\n  @media (max-width: 480px) {\n    .sl { padding: 0; }\n    .sl-feat-grid { grid-template-columns: 1fr; gap: 8px; }\n    .sl-feat { padding: 0.8rem 0.9rem; }\n    .sl-inc-grid { grid-template-columns: 1fr; }\n    .sl-spec-grid { gap: 1.25rem; }\n    .sl-spec-table, .sl-spec-table tbody, .sl-spec-table tr, .sl-spec-table td { display: block; width: 100%; }\n    .sl-spec-table { border: none; }\n    .sl-spec-table tr { border: 1px solid #e2e8f0; border-radius: 6px; margin-bottom: 6px; padding: 8px 12px; background: #fff !important; }\n    .sl-spec-table tr:nth-child(odd) { background: #f8fafc !important; }\n    .sl-spec-table td { border: none; padding: 1px 0; }\n    .sl-spec-table td:first-child { font-size: 10px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: #64748b; width: 100%; padding-bottom: 2px; }\n    .sl-spec-table td:last-child { font-size: 15px; font-weight: 700 !important; color: #0f172a !important; width: 100%; word-wrap: break-word; overflow-wrap: break-word; }\n    .sl-divider { margin: 1.25rem 0; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"sl\"\u003e\n\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eFenix FX30-U1-U3-XC Digital Control w\/WiFi for Club, Spirit, Cilindro, and Virta Series Sauna Heaters\u003c\/h2\u003e\n\u003cp\u003eThe Harvia Fenix FX30-U1-U3-XC is the next-generation full control unit with built-in WiFi for Club, Spirit, Cilindro, and Virta series Harvia sauna heaters. It is the Fenix-generation successor to the Xenio CX30-U1-U3-XW - the same lower-capacity control tier (7kW at 240V\/1PH, 10.5kW at 208V\/3PH) now in the Fenix system with a 4.3\" glass touchscreen, AI learning, MyHarvia 2 app, smart timer, and 3 customizable presets. Unlike the FX001XW panel (which is a panel-only upgrade for existing Xenio units), the FX30-U1-U3-XC is a complete control system: it includes the power unit, the Fenix 4.3\" glass panel, data cable, and temperature sensor - everything needed to control a compatible heater from scratch. It is not compatible with Virta Combi heaters; the FX30C series is required for Combi installations.\u003c\/p\u003e\n\u003ch4\u003eFX30 vs CX30 - Fenix generation replaces Xenio with more intelligence\u003c\/h4\u003e\n\u003cp\u003eThe CX30-U1-U3-XW Xenio control covered the same heater capacity range as the FX30 - 7kW at 240V and 10.5kW at 208V - with a button-based panel and MyHarvia app connectivity via built-in WiFi. The FX30-U1-U3-XC replaces this with a 4.3\" glass touchscreen panel, AI-assisted learning that continuously adapts to the specific heater's heating curve, 3 configurable preset modes for one-tap session starts, a smart timer that calculates the correct preheat start time based on the learned curve, and OTA firmware updates over WiFi that keep the control current automatically. The physical power unit behind the panel handles the same heater load as the CX30, and the FX30 is expandable with the LTY45 power extension unit for installations that require higher output than the FX30 can manage directly.\u003c\/p\u003e\n\u003ch4\u003eAI learning and smart timer - the Fenix intelligence advantage\u003c\/h4\u003e\n\u003cp\u003eThe FX30's AI learning tracks the heating behavior of the connected sauna heater over time - how quickly it reaches different target temperatures from cold, how the heating curve changes with room conditions - and uses this data to continuously optimize the control's preheat scheduling. The smart timer uses the learned curve to calculate the latest possible start time for the sauna to be at the desired temperature at the desired moment, starting the preheat as late as possible to minimize energy use and avoid the sauna overheating and holding temperature while waiting for the bather. Three preset modes allow commonly used session configurations to be saved and recalled with a single tap from either the Fenix panel or the MyHarvia 2 app.\u003c\/p\u003e\n\u003ch4\u003eCompatible heaters and expandability - U1, U3, and LTY45\u003c\/h4\u003e\n\u003cp\u003eThe FX30-U1-U3-XC covers both single-phase (U1, 240V, up to 7kW) and three-phase (U3, 208V, up to 10.5kW) wiring configurations in a single SKU. It is compatible with Harvia Spirit, Cilindro, Club, and Virta series heaters within the specified load range. It is not compatible with Virta Combi heaters (which require the FX30C series) or with heaters above the FX30's native capacity. For installations requiring higher output, the FX30 can be expanded with the optional Harvia LTY45 power extension unit (sold separately), extending coverage to higher-power heaters without replacing the control system. The FX45-U1-U3-XC is the alternative for installations up to 11kW\/240V or 15kW\/208V that do not require the LTY45 expansion path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-hook\"\u003eNext-generation full sauna control unit with built-in WiFi for Club, Spirit, Cilindro, and Virta series Harvia heaters. Complete system: 4.3\" Fenix glass touchscreen panel plus power unit - not a panel-only upgrade. Up to 7kW at 240V \/ 10.5kW at 208V. Covers U1 (single-phase) and U3 (three-phase). AI learning - adapts to heater performance curve. Smart timer - calculates optimal preheat start time. 3 customizable presets plus favorites. MyHarvia 2 app - iOS and Android. Expandable with LTY45 power unit. OTA firmware updates. Surface or flush mount. Inside or outside sauna room. 3.4\"W x 1.0\"D x 4.4\"H. Not compatible with Virta Combi (use FX30C). ETL Listed. 1-year warranty. Made by Harvia, Finland.\u003c\/div\u003e\n\u003cdiv class=\"sl-badges\"\u003e\n\u003cspan class=\"sl-badge\"\u003eComplete control unit - panel + power unit included\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eUp to 7kW \/ 240V (1PH) or 10.5kW \/ 208V (3PH)\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eClub, Spirit, Cilindro, Virta series\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eCovers U1 and U3 in one SKU\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e4.3\" Fenix glass touchscreen\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eBuilt-in WiFi - MyHarvia 2 app\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eAI learning - adapts to heater curve\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eSmart timer - optimal preheat start\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e3 customizable presets plus favorites\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eExpandable with LTY45 power unit\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eOTA firmware updates\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eNot compatible with Virta Combi (use FX30C)\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eETL Listed\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e1-year warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"sl-spec-grid\"\u003e\n\u003cdiv class=\"sl-spec-tables\"\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eElectrical capacity\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax load - 240V \/ 1-phase (U1)\u003c\/td\u003e\n\u003ctd\u003e7 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax load - 208V \/ 3-phase (U3)\u003c\/td\u003e\n\u003ctd\u003e10.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpandable with LTY45\u003c\/td\u003e\n\u003ctd\u003eYes - higher outputs available with power extension unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eETL Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpirit series\u003c\/td\u003e\n\u003ctd\u003e6kW (confirm model compatibility)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCilindro series\u003c\/td\u003e\n\u003ctd\u003eWithin FX30 load range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVirta series\u003c\/td\u003e\n\u003ctd\u003eWithin FX30 load range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClub series\u003c\/td\u003e\n\u003ctd\u003eWithin FX30 load range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNOT compatible with\u003c\/td\u003e\n\u003ctd\u003eVirta Combi (use FX30C), heaters above FX30 load range (use FX45)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eFenix intelligence features\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAI learning\u003c\/td\u003e\n\u003ctd\u003eContinuously adapts to heater performance curve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmart timer\u003c\/td\u003e\n\u003ctd\u003eCalculates optimal preheat start - sauna ready when needed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePresets\u003c\/td\u003e\n\u003ctd\u003e3 customizable presets plus favorites\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirmware updates\u003c\/td\u003e\n\u003ctd\u003eOTA - automatic over WiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-image\"\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eMyHarvia 2 app functions\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp\u003c\/td\u003e\n\u003ctd\u003eMyHarvia 2 - iOS and Android (free)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote on\/off\u003c\/td\u003e\n\u003ctd\u003eYes - from anywhere\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature and time control\u003c\/td\u003e\n\u003ctd\u003eYes - remote adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLighting and ventilation\u003c\/td\u003e\n\u003ctd\u003eOn\/off control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTimed start\u003c\/td\u003e\n\u003ctd\u003e0-12 hour pre-heating schedule\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeek timer\u003c\/td\u003e\n\u003ctd\u003eRecurring weekly sauna schedule\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmart timer\u003c\/td\u003e\n\u003ctd\u003eAI-optimized preheat start based on learned curve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003ePhysical\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003e4.3\" Fenix glass touchscreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x D x H)\u003c\/td\u003e\n\u003ctd\u003e3.4\" x 1.0\" x 4.4\" (86 x 25 x 112 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation options\u003c\/td\u003e\n\u003ctd\u003eSurface or flush wall mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocation\u003c\/td\u003e\n\u003ctd\u003eInside sauna (at correct safety distance) or outside\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eHarvia - Finland\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eFenix control family\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFX30-U1-U3-XC (this)\u003c\/td\u003e\n\u003ctd\u003e7kW\/240V or 10.5kW\/208V - Spirit, Cilindro, Club, Virta\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFX45-U1-U3-XC\u003c\/td\u003e\n\u003ctd\u003e11kW\/240V or 15kW\/208V - same series, higher load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFX30C-U1-XC\u003c\/td\u003e\n\u003ctd\u003eCombi - Virta Combi only, single-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFX30C-U3-XC\u003c\/td\u003e\n\u003ctd\u003eCombi - Virta Combi only, three-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cdiv class=\"sl-inc-grid\"\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eHarvia Fenix 4.3\" glass touchscreen control panel\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003ePower unit\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eData cable (5m RJ10)\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eTemperature sensor\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eInstallation and operation manual\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 1rem; font-weight: 500; color: #64748b; font-size: 14px;\"\u003e\u003cstrong\u003eFree:\u003c\/strong\u003e MyHarvia 2 app - download from App Store or Google Play. \u003cstrong\u003eSold separately:\u003c\/strong\u003e LTY45 power extension unit (for higher load expansion); compatible Harvia sauna heater. A licensed electrician is required for all electrical connections. The temperature sensor included with the heater must be installed per the heater's installation manual.\u003c\/p\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eWhy the Harvia Fenix FX30-U1-U3-XC stands out\u003c\/h3\u003e\n\u003cdiv class=\"sl-feat-grid\"\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eComplete control unit - not a panel upgrade\u003c\/div\u003e\n\u003cp\u003eThe FX30-U1-U3-XC includes the full control system: 4.3\" Fenix glass panel, power unit, data cable, and temperature sensor. This is a complete new installation or full replacement of an existing Xenio system, not a panel-only swap. For buyers installing a Harvia heater for the first time or replacing an entire Xenio control system with Fenix generation hardware, the FX30 is the complete solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eAI learning - adapts to your specific heater\u003c\/div\u003e\n\u003cp\u003eThe FX30's AI continuously tracks how the connected sauna heater performs - its actual heating curve under real room conditions - and adapts the control's scheduling and smart timer calculations to the specific installation. Over time, the control becomes more precisely calibrated to the actual heater and room combination rather than relying on generic timing assumptions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eSmart timer - sauna ready at exactly the right moment\u003c\/div\u003e\n\u003cp\u003eUsing the learned heating curve, the smart timer calculates the latest possible start time for the sauna to be at the target temperature when the bather wants it ready. Rather than starting a fixed time early and having the sauna sit hot, the FX30 starts the preheat at the correct moment - saving energy and ensuring the sauna is at peak temperature on arrival, not over-held.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003e3 presets plus favorites - one-tap session starts\u003c\/div\u003e\n\u003cp\u003eThree saved preset modes store complete session configurations - temperature, time, and other parameters - that can be activated with a single tap from either the 4.3\" Fenix panel or the MyHarvia 2 app. Additional favorites extend beyond the three standard presets. For households or facilities with regular session patterns, preset access eliminates repeated manual configuration at the start of every session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eExpandable with LTY45 for higher loads\u003c\/div\u003e\n\u003cp\u003eFor installations where the FX30's 7kW\/240V or 10.5kW\/208V native capacity is insufficient, the LTY45 power extension unit (sold separately) can be added to extend the system to higher heater outputs without replacing the FX30 control itself. This expansion path avoids the need to step up to the FX45 for borderline load requirements and allows the same Fenix panel and MyHarvia 2 setup to serve a wider range of heater sizes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eCovers U1 and U3 - one SKU for both phases\u003c\/div\u003e\n\u003cp\u003eThe FX30-U1-U3-XC supports both single-phase 240V (U1) and three-phase 208V (U3) wiring configurations. For commercial installations on three-phase power, the same FX30 control unit is used with the appropriate three-phase wiring configuration per the IOM. No separate U3-specific SKU is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eAbout Harvia\u003c\/h3\u003e\n\u003cdiv class=\"sl-brand1\"\u003e\n\u003cimg class=\"sl-brand-img\" src=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-11\/Harvia-Fenix-Control-FX30-FX45.jpg\" alt=\"Harvia Fenix FX30-U1-U3-XC sauna control unit with 4.3 inch glass touchscreen for Club Spirit Cilindro and Virta heaters\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"sl-brand-tag\"\u003eHarvia - Finland - ETL Listed\u003c\/span\u003e\n\u003ch4\u003eHarvia Fenix FX30-U1-U3-XC. Complete WiFi control unit. 7kW\/240V or 10.5kW\/208V. AI learning. MyHarvia 2.\u003c\/h4\u003e\n\u003cp\u003eHarvia is a Finnish sauna and spa company with over 70 years of manufacturing history. The Fenix FX30-U1-U3-XC is the next-generation complete control unit for Club, Spirit, Cilindro, and Virta series Harvia heaters - the Fenix-generation successor to the Xenio CX30-U1-U3-XW. Includes the 4.3\" Fenix glass panel, power unit, data cable, and temperature sensor. Built-in WiFi with MyHarvia 2, AI learning, smart timer, 3 presets, and OTA firmware updates. Not compatible with Virta Combi heaters - use the FX30C series for Combi installations. A licensed electrician is required. We are an authorized Harvia dealer.\u003c\/p\u003e\n\u003cul class=\"sl-check\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete unit\u003c\/strong\u003e - 4.3\" Fenix panel + power unit included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7kW\/240V or 10.5kW\/208V\u003c\/strong\u003e - covers U1 and U3 in one SKU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAI learning + smart timer + 3 presets\u003c\/strong\u003e - Fenix intelligence\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMyHarvia 2, OTA updates, expandable with LTY45\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for Combi\u003c\/strong\u003e (use FX30C) - ETL Listed - 1-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eManuals and Documents\u003c\/h3\u003e\n\u003cdiv class=\"sl-manual\"\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eInstallation and Operation Manual\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-10\/Harvia-Fenix-and-Xenio-Control-IOM.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e Harvia-Fenix-and-Xenio-Control-IOM.pdf \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cdiv class=\"sl-warranty\"\u003e\n\u003ch5\u003e1-year limited warranty\u003c\/h5\u003e\n\u003cp\u003eThe Harvia Fenix FX30-U1-U3-XC is covered by a \u003cstrong\u003e1-year limited warranty\u003c\/strong\u003e from the date of purchase for both consumer and commercial use. The warranty covers defects in manufacturing and materials under normal use conditions. The warranty does not cover damage caused by improper installation, use with non-compatible heaters (including Virta Combi), exceeding the rated load without the LTY45 extension unit, or failure to follow the installation guidelines in the IOM. A licensed electrician is required for all electrical connections. Proof of purchase from an authorized Harvia dealer is required for warranty claims. We are an authorized Harvia dealer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Fenix","offers":[{"title":"Default Title","offer_id":52270816100634,"sku":"FX30-U1-U3-XC","price":1168.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/1690\/0634\/files\/swatch-17804021392460.webp?v=1780404351","url":"https:\/\/mediriser.com\/products\/fenix-fx30-u1-u3-xc-digital-control-w-wifi-for-club-spirit-cilindro-and-virta-series-sauna-heaters","provider":"Mediriser","version":"1.0","type":"link"}