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Initial Setup

LED indicators

Overview of LED indicators on Core, their states and error states of IO modules.

Status information

LED 1:
- Three blinks after power-on indicate system boot.
- Otherwise, it indicates the communication status with other modules on the TapHome bus.
LED 2:
- The system is running.
- Connection to the local network has been established.
LED 3:
- Connected to the cloud.
- Remote access is available.

Error states

LED 2 (LAN)	LED 3 (Internet)	Description
		The system did not start
		LAN cable is disconnected
		The device has not been assigned an IP address
		TapHome Core firmware is not running
		TapHome Core firmware cannot connect to the cloud
		TapHome Core firmware cannot connect to the cloud
		The device has DNS configuration issues
		The device cannot connect to the internet
		TapHome Core firmware is running and connected to the cloud

LED indicators on IO modules

Status information

LED	Description
	The device is powered and communicates with the Core control unit. ✅ All good.
	The configuration window in the iOS or Android app for this module is currently open. ✅ This is how you can identify the module you are configuring and name it for future use.

Error states

LED	Description	Actions
1x	The device is powered but receives invalid communication packets.	❌ Check that the bus is properly connected. ❌ Check that terminals A and B are connected in the correct order. ❌ Check that a 100 Ohm termination resistor is placed at the end of the bus between A and B. ❌ Check that the device is connected to TapHome Bus conductors. Connecting TapHome to Modbus or another protocol will cause invalid packets, shown as 1 blink.
2x	The device is powered and has valid communication with the Core control unit, but messages are not addressed to this module.	✅ Everything is ready, but the module has not been scanned (Hardware → TapHome Bus → Find new devices ).
3x	The device is powered but does not receive any communication.	❌ Check that the correct BUS terminal is enabled in Hardware → TapHome Bus → Terminals .
Off	The device is not powered or is not functioning correctly.	❌ Check that there is a voltage of 24VDC between the +24V and GND terminals. Tolerance is ±10%.