Installation Guide for Danfoss Link RS Room Sensor

Quick guide from the manual

The Danfoss Link RS is a battery-powered room sensor designed to measure ambient temperature and control heating. Installation involves mounting the back panel to the wall, inserting two AA batteries, and sliding the front unit onto the back panel. The device must be paired with a Danfoss Link CC Central Controller to function within the system.

Installation

The wireless transmission range is sufficient for most applications, but building obstacles may affect performance. If communication issues arise, consider using repeaters.

• Do not install the sensor in direct sunlight.
• Recommended installation height is 80-150 cm.
• In wet rooms, follow local building regulations.
• Maintain at least 50 cm distance from windows or doors that may be left open.

Mounting steps:

1. Turn the device to access the back.
2. Remove the back panel by pressing with thumbs and pulling downwards.
3. Fix the back panel to the wall using screws or adhesive.
4. Insert the batteries.
5. Slide the front unit onto the back panel.

Adding device

The sensor is connected to the system via the Danfoss Link CC Central Controller. Refer to the Danfoss Link CC instruction manual, specifically the section on adding devices, to complete the pairing process.

Network test

After adding the device, perform a network test as described in the Danfoss Link CC manual. If prompted, go to the RS unit and press the LED button for 5 seconds to force a signal.

Factory reset

1. Remove the front unit from the back panel.
2. Turn the unit to access the back.
3. Remove one battery.
4. Press and hold the button while reinserting the battery until the LED flashes red (approx. 5 seconds).
5. Replace the front unit.

Troubleshooting

The device uses LED signals to indicate status:

• Short green flash: Not included in network.
• Green fast flash: Inclusion in progress.
• Red flash + signal icon for 5 sec: Inclusion or link test failed.
• Signal icon ON: Link test in progress.
• ON + Red LED flash every 2.5 min: Low battery level.
• ON + Red LED flash every 30 sec: Critical battery level.
• E5: Floor sensor short circuited.
• E6: Floor sensor lost.

Technical specifications

• Battery: 2 x AA, 1.5 V Alkaline
• Battery lifetime: Up to 4-5 years
• Transmission frequency: 868.42 MHz
• Transmission range: Up to 30 m in normal buildings
• IP class: 21
• Dimensions: 75 mm x 75 mm x 24 mm

Disposal

Dispose of the device and batteries according to local regulations for electronic waste.