{"product_id":"engo-efan-230b-wi-fi-fan-coil-thermostat-230v-black-modbus-rs-485","title":"ENGO EFAN-230B Wi-Fi Fan Coil Thermostat, 230V, Black - MODBUS RS-485","description":"\u003c!-- SEO Product Name: ENGO EFAN-230B Wi-Fi Fan Coil Thermostat, 230V, Black - MODBUS RS-485 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eENGO EFAN-230B\u003c\/strong\u003e is a wireless, flush-mounted fan coil thermostat designed to control \u003cstrong\u003e2-pipe and 4-pipe fan coil units\u003c\/strong\u003e as well as duct heaters, with dedicated support for mixed systems combining fan coil cooling with underfloor heating. Built around \u003cstrong\u003e2.4GHz Wi-Fi\u003c\/strong\u003e and \u003cstrong\u003eMODBUS RS-485\u003c\/strong\u003e communication, it integrates directly into smart home platforms and BMS\/building automation networks, giving installers a single controller for a wide range of HVAC configurations.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eOnboard control of \u003cstrong\u003e3-speed 230V fans\u003c\/strong\u003e is handled automatically via the Delta FAN algorithm, or manually from the device or the ENGO Smart app. Built-in \u003cstrong\u003efrost and overheat protection\u003c\/strong\u003e, \u003cstrong\u003eECO mode\u003c\/strong\u003e, and memory retention after a power loss round out a controller aimed at both residential and light commercial installations such as offices, apartments and hotel rooms.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#FFFFFF; border-radius:8px;\n        padding:14px 10px; text-align:center; margin:4px;\"\u003e\n        \u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e230V AC\u003c\/div\u003e\n        \u003cdiv style=\"font-size:11.5px; font-weight:500; letter-spacing:0.02em; margin-top:4px; opacity:0.92;\"\u003ePower Supply\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#FFFFFF; border-radius:8px;\n        padding:14px 10px; text-align:center; margin:4px;\"\u003e\n        \u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e5(2)A\u003c\/div\u003e\n        \u003cdiv style=\"font-size:11.5px; font-weight:500; letter-spacing:0.02em; margin-top:4px; opacity:0.92;\"\u003eOutput Load\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#FFFFFF; border-radius:8px;\n        padding:14px 10px; text-align:center; margin:4px;\"\u003e\n        \u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e2 \/ 4-Pipe\u003c\/div\u003e\n        \u003cdiv style=\"font-size:11.5px; font-weight:500; letter-spacing:0.02em; margin-top:4px; opacity:0.92;\"\u003eFan Coil Support\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#FFFFFF; border-radius:8px;\n        padding:14px 10px; text-align:center; margin:4px;\"\u003e\n        \u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003eWi-Fi 2.4GHz\u003c\/div\u003e\n        \u003cdiv style=\"font-size:11.5px; font-weight:500; letter-spacing:0.02em; margin-top:4px; opacity:0.92;\"\u003e+ MODBUS RS-485\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#FFFFFF; border-radius:8px;\n        padding:14px 10px; text-align:center; margin:4px;\"\u003e\n        \u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e5–45°C\u003c\/div\u003e\n        \u003cdiv style=\"font-size:11.5px; font-weight:500; letter-spacing:0.02em; margin-top:4px; opacity:0.92;\"\u003eSetpoint Range\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#FFFFFF; border-radius:8px;\n        padding:14px 10px; text-align:center; margin:4px;\"\u003e\n        \u003cdiv style=\"font-size:18px; font-weight:700; line-height:1.2;\"\u003e90×90×44mm\u003c\/div\u003e\n        \u003cdiv style=\"font-size:11.5px; font-weight:500; letter-spacing:0.02em; margin-top:4px; opacity:0.92;\"\u003eDimensions\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FDECEC; border-left:4px solid #D32F2F;\n    border-radius:0 8px 8px 0; padding:14px 18px; margin:18px 0;\"\u003e\n    \u003cdiv style=\"font-weight:700; color:#D32F2F; font-size:14px; margin-bottom:6px; text-transform:uppercase; letter-spacing:0.04em;\"\u003eInstaller-Only Wiring\u003c\/div\u003e\n    \u003cdiv style=\"font-size:15px; line-height:1.6; color:#2B2B2B;\"\u003eThis thermostat is powered by \u003cstrong\u003e230V AC mains supply\u003c\/strong\u003e and switches 230V AC valve and fan outputs directly. Installation, wiring, and connection work must be carried out by a \u003cstrong\u003equalified, appropriately licensed electrician\u003c\/strong\u003e in accordance with local and EU wiring regulations. Always isolate the mains supply to both the thermostat and the connected heat\/cool source before working on the unit.\u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A;\n    border-radius:0 8px 8px 0; padding:14px 18px; margin:18px 0;\"\u003e\n    \u003cdiv style=\"font-weight:700; color:#E0942A; font-size:14px; margin-bottom:6px; text-transform:uppercase; letter-spacing:0.04em;\"\u003eModel Variant Note\u003c\/div\u003e\n    \u003cdiv style=\"font-size:15px; line-height:1.6; color:#2B2B2B;\"\u003eThe EFAN-230B is the \u003cstrong\u003eblack-cased, 230V AC version\u003c\/strong\u003e of ENGO's Wi-Fi fan coil thermostat range (model code 932310554). A separate \u003cstrong\u003e24V DC version (EFAN-24B\/EFAN-24W)\u003c\/strong\u003e exists with different wiring terminals (0–10V fan\/valve outputs) — the specifications on this page apply to the \u003cstrong\u003e230V AC EFAN-230B only\u003c\/strong\u003e. Always confirm the voltage rating on the unit's rear label matches your system before wiring.\u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF;\n    border-radius:0 8px 8px 0; padding:14px 18px; margin:18px 0;\"\u003e\n    \u003cdiv style=\"font-weight:700; color:#008377CF; font-size:14px; margin-bottom:6px; text-transform:uppercase; letter-spacing:0.04em;\"\u003eENGO Smart App Control\u003c\/div\u003e\n    \u003cdiv style=\"font-size:15px; line-height:1.6; color:#2B2B2B;\"\u003eThe EFAN-230B connects to the free \u003cstrong\u003eENGO Smart app\u003c\/strong\u003e (iOS 9.0+ \/ Android 5.0+) via Tuya Cloud, enabling remote setpoint changes, \u003cstrong\u003e6-point daily scheduling\u003c\/strong\u003e, temperature history graphs, and voice control through \u003cstrong\u003eAmazon Alexa\u003c\/strong\u003e and \u003cstrong\u003eGoogle Assistant\u003c\/strong\u003e.\u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px;\n        padding:16px 18px; margin:6px;\"\u003e\n        \u003cdiv style=\"font-weight:700; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eDual-Protocol Communication\u003c\/div\u003e\n        \u003cdiv style=\"font-size:14.5px; line-height:1.55; color:#3A3A3A;\"\u003eCombines \u003cstrong\u003e2.4GHz Wi-Fi\u003c\/strong\u003e for app\/cloud control with \u003cstrong\u003eMODBUS RS-485\u003c\/strong\u003e for direct integration into BMS and building automation systems — one device covers both smart-home and commercial control architectures.\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px;\n        padding:16px 18px; margin:6px;\"\u003e\n        \u003cdiv style=\"font-weight:700; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eFlexible Fan Coil Configurations\u003c\/div\u003e\n        \u003cdiv style=\"font-size:14.5px; line-height:1.55; color:#3A3A3A;\"\u003eSupports \u003cstrong\u003e2-pipe heating-only, cooling-only, and heating\/cooling\u003c\/strong\u003e systems as well as \u003cstrong\u003e4-pipe simultaneous heating and cooling\u003c\/strong\u003e, switched manually, via external volt-free contact, or automatically from a pipe or room air temperature sensor.\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px;\n        padding:16px 18px; margin:6px;\"\u003e\n        \u003cdiv style=\"font-weight:700; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eMixed System Support\u003c\/div\u003e\n        \u003cdiv style=\"font-size:14.5px; line-height:1.55; color:#3A3A3A;\"\u003eCan independently drive a \u003cstrong\u003e2-pipe fan coil circuit\u003c\/strong\u003e alongside a separate \u003cstrong\u003eunderfloor heating circuit\u003c\/strong\u003e from the same controller, using the V1 and V2 valve outputs.\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px;\n        padding:16px 18px; margin:6px;\"\u003e\n        \u003cdiv style=\"font-weight:700; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eDelta FAN Adaptive Speed Control\u003c\/div\u003e\n        \u003cdiv style=\"font-size:14.5px; line-height:1.55; color:#3A3A3A;\"\u003eAutomatically ramps \u003cstrong\u003e3-speed fan output\u003c\/strong\u003e in proportion to the gap between room and setpoint temperature, with independently configurable heating and cooling response ranges (Delta FAN Heating\/Cooling, 1–10°C) to balance comfort against fan noise.\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px;\n        padding:16px 18px; margin:6px;\"\u003e\n        \u003cdiv style=\"font-weight:700; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eTPI Algorithm for Underfloor Heating\u003c\/div\u003e\n        \u003cdiv style=\"font-size:14.5px; line-height:1.55; color:#3A3A3A;\"\u003eWhen configured for underfloor heating, the controller can switch from standard hysteresis to a \u003cstrong\u003eTime Proportional and Integral (TPI)\u003c\/strong\u003e algorithm, pulsing the valve in short, adaptive bursts to reduce the overshoot typical of high thermal-inertia systems.\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px;\n        padding:16px 18px; margin:6px;\"\u003e\n        \u003cdiv style=\"font-weight:700; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eFrost and Overheat Protection\u003c\/div\u003e\n        \u003cdiv style=\"font-size:14.5px; line-height:1.55; color:#3A3A3A;\"\u003eA dedicated \u003cstrong\u003eFROST mode\u003c\/strong\u003e holds a constant, selectable setpoint between 5–17°C, activating heating automatically if the room temperature drops below the threshold — protecting pipework and fan coil units during unoccupied periods.\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px;\n        padding:16px 18px; margin:6px;\"\u003e\n        \u003cdiv style=\"font-weight:700; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eMulti-Function Auxiliary Inputs\u003c\/div\u003e\n        \u003cdiv style=\"font-size:14.5px; line-height:1.55; color:#3A3A3A;\"\u003eThe \u003cstrong\u003eS1-COM\u003c\/strong\u003e input can serve as a pipe sensor, heating\/cooling mode switch, or floor sensor input, while \u003cstrong\u003eS2-COM\u003c\/strong\u003e can act as an ECO-mode occupancy switch or an external NTC air temperature sensor — reducing the need for additional controllers.\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px;\n        padding:16px 18px; margin:6px;\"\u003e\n        \u003cdiv style=\"font-weight:700; color:#00625D; font-size:15px; margin-bottom:6px;\"\u003eSettings Retained After Power Loss\u003c\/div\u003e\n        \u003cdiv style=\"font-size:14.5px; line-height:1.55; color:#3A3A3A;\"\u003eAll schedules, setpoints, and installer parameter settings are \u003cstrong\u003eretained through a power interruption\u003c\/strong\u003e, so the controller resumes its exact prior configuration once power is restored.\u003c\/div\u003e\n        \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13px;\n            text-transform:uppercase; letter-spacing:0.05em; padding:9px 14px;\n            border-radius:6px 6px 0 0; margin-top:0px;\"\u003ePower \u0026amp; Electrical\u003c\/div\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003ePower supply\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003e230V AC, 50Hz\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eValve control outputs (V1, V2)\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; color:#2B2B2B; font-size:14.5px;\"\u003e230V AC, 5(2)A\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eFan control outputs (F1, F2, F3)\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003e230V AC, 5(2)A — I \/ II \/ III fan speed\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eInputs (S1\/COM, S2\/COM)\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; color:#2B2B2B; font-size:14.5px;\"\u003eTemperature sensor or volt-free contact\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13px;\n            text-transform:uppercase; letter-spacing:0.05em; padding:9px 14px;\n            border-radius:6px 6px 0 0; margin-top:18px;\"\u003eControl \u0026amp; Sensing\u003c\/div\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eTemperature setpoint range\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003e5.0°C to 45.0°C\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eDisplayed temperature accuracy\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; color:#2B2B2B; font-size:14.5px;\"\u003e0.1°C or 0.5°C (selectable)\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eControl algorithm\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003eDelta FAN, Hysteresis (±0.1°C to ±2.0°C), TPI (underfloor heating)\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eTemperature correction\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; color:#2B2B2B; font-size:14.5px;\"\u003e±3.0°C in 0.5°C steps\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eFrost (anti-freeze) setpoint range\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003e5°C to 17°C\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eHumidity measurement\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; color:#2B2B2B; font-size:14.5px;\"\u003eYes, built-in\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13px;\n            text-transform:uppercase; letter-spacing:0.05em; padding:9px 14px;\n            border-radius:6px 6px 0 0; margin-top:18px;\"\u003eCommunication\u003c\/div\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eWireless\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003eWi-Fi 2.4GHz (IEEE 802.11 b\/g\/n)\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eWired bus\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; color:#2B2B2B; font-size:14.5px;\"\u003eMODBUS RTU via RS-485 (A+\/B-), up to 247 slave devices\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eApp compatibility\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003eENGO Smart app — Android 5.0+ \/ iOS 9.0+\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eVoice control\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; color:#2B2B2B; font-size:14.5px;\"\u003eAmazon Alexa, Google Assistant\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13px;\n            text-transform:uppercase; letter-spacing:0.05em; padding:9px 14px;\n            border-radius:6px 6px 0 0; margin-top:18px;\"\u003ePhysical \u0026amp; Compliance\u003c\/div\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eDimensions\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003e90 x 90 x 44mm (13mm projection after flush-box mounting)\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eMounting\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; color:#2B2B2B; font-size:14.5px;\"\u003eFlush-mounted, 60mm back box\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eHousing colour\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003eBlack\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eModel \/ product code\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; color:#2B2B2B; font-size:14.5px;\"\u003eEFAN-230B — 932310554\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eEAN\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003e5905481996628\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eEU compliance\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#F7FAFA; color:#2B2B2B; font-size:14.5px;\"\u003e2014\/53\/EU (RED), 2011\/65\/EU (RoHS)\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003ctr\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; font-weight:600; width:42%; color:#2B2B2B; font-size:14.5px;\"\u003eWarranty\u003c\/td\u003e\n            \u003ctd style=\"padding:9px 14px; border-bottom:1px solid #D9EDEA; background:#FFFFFF; color:#2B2B2B; font-size:14.5px;\"\u003e5 years from date of installation\u003c\/td\u003e\n            \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:24px 0;\"\u003e\n\u003cdetails style=\"margin:8px 0; border:1px solid #D9EDEA; border-radius:8px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eCan the EFAN-230B control underfloor heating as well as a fan coil unit?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eYes. It supports a \u003cstrong\u003emixed system configuration\u003c\/strong\u003e where one 2-pipe fan coil circuit (heating or cooling) is controlled via output V1, and a separate underfloor heating circuit is controlled via output V2, each managed independently by the thermostat.\u003c\/div\u003e\n        \u003c\/details\u003e\u003cdetails style=\"margin:8px 0; border:1px solid #D9EDEA; border-radius:8px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eWhat's the difference between the EFAN-230B and EFAN-230W?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eThe EFAN-230B and EFAN-230W share identical \u003cstrong\u003e230V AC electrical specifications and functionality\u003c\/strong\u003e — the only difference is the housing colour (black for the -B, white for the -W).\u003c\/div\u003e\n        \u003c\/details\u003e\u003cdetails style=\"margin:8px 0; border:1px solid #D9EDEA; border-radius:8px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eDoes the EFAN-230B work without an internet connection?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eThe thermostat can be operated locally using its \u003cstrong\u003e3 side buttons\u003c\/strong\u003e for manual mode, schedule mode, and fan speed changes without any internet connection. Wi-Fi and the ENGO Smart app are only required for remote control, scheduling from a phone, and voice assistant integration.\u003c\/div\u003e\n        \u003c\/details\u003e\u003cdetails style=\"margin:8px 0; border:1px solid #D9EDEA; border-radius:8px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eCan this thermostat automatically switch between heating and cooling?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eYes. Using the \u003cstrong\u003eS1-COM input\u003c\/strong\u003e with a pipe or room sensor, or an external volt-free contact, the EFAN-230B can automatically switch a 2-pipe system between heating and cooling based on pipe temperature thresholds, or switch a 4-pipe system based on room temperature and a configurable dead zone.\u003c\/div\u003e\n        \u003c\/details\u003e\u003cdetails style=\"margin:8px 0; border:1px solid #D9EDEA; border-radius:8px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eHow many devices can be linked on the MODBUS RS-485 bus?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eUp to \u003cstrong\u003e247 slave devices\u003c\/strong\u003e can share a single MODBUS RTU network, each requiring a unique address. ENGO recommends a linear (daisy-chain) bus topology with 120Ω termination resistors at each end, avoiding star wiring.\u003c\/div\u003e\n        \u003c\/details\u003e\u003cdetails style=\"margin:8px 0; border:1px solid #D9EDEA; border-radius:8px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:14.5px; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eWhat happens to my settings if there's a power cut?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; line-height:1.6; color:#2B2B2B; background:#FFFFFF;\"\u003eAll setpoints, schedules, and installer parameters are \u003cstrong\u003estored in memory\u003c\/strong\u003e and automatically restored once power returns — there's no need to reconfigure the thermostat after a power interruption.\u003c\/div\u003e\n        \u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ENGO Controls","offers":[{"title":"Default Title","offer_id":65420797346141,"sku":"EFAN-230B","price":69.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ENGOEFAN-230B.jpg?v=1785488679","url":"https:\/\/qualityheating.co.uk\/products\/engo-efan-230b-wi-fi-fan-coil-thermostat-230v-black-modbus-rs-485","provider":"AIZO Quality Heating","version":"1.0","type":"link"}