Harvia Xenio Virta Combi Digital Sauna Heater Control Kit | CX30C-U1-XW / CX30C-U3-XW
See What People Are Saying…
“This has completely transformed my workspace. The natural light is a game changer!”
“Built it in a weekend with my brother. Glass front is the move — feels like a real room, not a closet.”
“I love the design and how easy it was to set up. Highly recommend for any home owner.”
- Description
- What’s Included?
- Specifications
- Documents
- Warranty
Harvia Xenio Virta Combi Digital Sauna Heater Control with WiFi, Power Unit & Temp/Humidity Sensor Kit | CX30C-U1-XW / CX30C-U3-XW
The Harvia Xenio Virta Combi Digital Sauna Heater Control is a state-of-the-art control system designed for precision, convenience, and seamless integration with Virta Combi Series sauna heaters. Featuring WiFi connectivity and an intuitive touchscreen interface, this unit provides effortless control over sauna temperature, steam output, lighting, and operating time—whether from the control panel or remotely via the MyHarvia app on your smartphone or tablet.
Its sleek and compact design allows for flexible installation inside or outside the sauna, in a bathroom, or in a dressing room. The touchscreen display provides real-time temperature readings, ensuring an optimal sauna experience. With built-in scheduling functionality, users can program their sauna to turn on and off automatically, making it easy to enjoy a fully preheated sauna exactly when needed.
Key Features:
- Designed for Virta Combi Series heaters – Available for single-phase or three-phase power setups
- Independent Heater & Steamer Control – Adjust steam and heat separately for a customized experience
- User-Friendly Touchscreen – Easy-to-use interface for precise control of sauna functions
- WiFi-Enabled – Remote management via the MyHarvia app on Apple or Android devices
- Customizable Scheduling – Set the sauna to turn on automatically between 1-12 hours in advance and shut off after 1-12 hours
- Adjustable Temperature Range – 104°F to 194°F
- Versatile Installation – Mount inside or outside the sauna, recessed or surface-mounted
- Built for Durability – Designed for indoor installation in a dry location
- Digital Touchscreen Control Panel
- Power Unit
- Data Cable
- Temperature Sensor
- Humidity Sensor
- Installation & Operation Manual
- 1-Year Full Warranty + 5-Year Service Warranty
- Power Supply Voltage: 240V/1PH or 208V/3PH
- Maximum Output: 12.7 kW at 240V/1PH (two supply wires), or 10.8 kW at 208V/3PH
- Temperature Adjustment Range: 104°F - 194°F
- Pre-Set Timer: 0-12 hours
- Control Panel Dimensions: 3.4"W x 4.4"H x 1.0"D
Control Unit Ratings
| Specification | CX30C-U1-XW | CX30C-U3-XW |
|---|---|---|
| Supply voltage | 240 V 1 Ph | 208 V 3 Ph |
| Maximum load, heater plus steamer | 12.7 kW (two supply wires) | 10.8 kW |
| Temperature adjustment range | 104–194 °F (40–90 °C) | |
| Humidity adjustment range | 20–80 rH | |
| Timer delay range | 0–12 h | |
| Lighting control, max. | 100 W, 120 VAC 1 Ph | |
| Fan control, max. | 100 W, 120 VAC 1 Ph | |
| Control panel (W × D × H) | 3.4" × 1.0" × 4.4" (85 × 24 × 110 mm) | |
| Power unit (W × D × H) | 14.3" × 2.9" × 10.5" (364 × 73 × 267 mm) | |
| Temperature sensor | WX232 — NTC thermistor 22 kΩ at 77 °F (25 °C) with a resettable overheat protector; 2.0" × 2.9" × 1.1" (51 × 73 × 27 mm), 6 oz (175 g), 13 ft (4 m) lead | |
| Humidity sensor | WX325 — measures temperature and relative humidity | |
System Components and Where Each Part Goes
| Component | Placement |
|---|---|
| Power unit and main switch | Dry area — on a wall outside the sauna room, above 32 °F (0 °C). Do not recess the power unit into the wall. |
| Control panel (joined to the power unit by the data cable) | Dry area — dressing room, washing room or living quarters. If it is mounted inside the sauna room: at least 1.5 ft (500 mm) from the heater and no more than 3.3 ft (1000 mm) above the floor. |
| Temperature sensor WX232 | Sauna room — on the wall above the heater, on its vertical centre line, 3.9" (100 mm) below the ceiling. Minimum 39.4" (1000 mm) from any air vent. If a sensor came with the heater, install it as that heater's manual shows. |
| Humidity sensor WX325 | Sauna room — on the wall as far from the heater as possible, 20–28" (500–700 mm) below the ceiling |
| Virta Combi heater (not included) | Sauna room |
The CX30C controls a Harvia Virta Combi heater — heating elements and vaporizer are set independently — and needs BOTH sensors, which are supplied with the kit. Ratings and placement are from the Harvia Xenio Combi CX30C Installation and Operation Manual linked below. Confirm against the manual before wiring.
