Honeywell Internet Gateway Evohome App Control RFG100

The Honeywell Home RFG100 is an internet gateway for the Evohome smart heating control system. It connects the Evohome controller to the home broadband router, so the system can be viewed and adjusted remotely through the mobile app. The unit is mains powered and supplied as a corded, white wall-mounted device.

• The Evohome app reports the system as offline while the controller itself still runs the heating locally.
• The gateway fails to complete pairing with the controller, or drops the connection repeatedly.
• No status indication on the gateway after power is applied, or the unit does not power up at all.
• Remote scheduling and app-based overrides stop working even though the router and broadband connection are healthy.
• The gateway is detected on the network but the app cannot reach the Evohome system through it.

• Confirm the existing gateway carries the RFG100 part number, as the unit is specific to the Evohome control platform.
• Check the controller model and firmware level before fitting, since the gateway works as part of the wider Evohome installation.
• Note the alternative number 4201166 when cross-referencing against older documentation or supplier listings.
• Allow a spare network cable and a nearby mains socket, as the gateway is corded and needs a permanent 230 Volt supply.