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Troubleshooting

Find solutions to common TapHome issues and problems

Common Issues

TapHome bus: measure Bus A and Bus B Modules on the TapHome bus drop out, the bus analyzer shows errors or push buttons react late. A multimeter check of Bus A and Bus B against GND at the Core and at the modules shows a loose terminal, an unconnected wire or a faulty module. Service
DALI lights switch on by themselves DALI lights behind a DALI gateway switch on at minimum or change brightness without any command, usually the same few lights each time. The bus is disturbed for a moment — by the gateway, a short on a branch or a voltage drop. AdminService
Modbus RTU: device drops out, no common GND A Modbus RTU device with its own power supply, such as a hybrid inverter, heat pump or heat recovery unit, goes into error for a few tens of seconds and its values have gaps, because only A and B are wired and its ground floats against the ground of the Core. Service
Push button: every press is a long press A push button on a universal input reports long presses, series of short presses and the error "pressed for more than 1 minute" when its input is active while the button is not pressed, typically with a normally closed button or wiring. Service
Humidity too high on a switch or controller The temperature and humidity sensor of a TapHome switch or controller with display reads too cold and too humid when its temperature compensation subtracts more heat than the device really produces. AdminService
Sun rules use the wrong location Smart rules that work with the sun calculate its position from the GPS position of the location. If nobody changed the default, the calculation runs for Vienna instead of your house. Admin
Modbus ID collision Multiple Modbus devices with the same Slave ID causing communication errors Service
Jablotron PG not switching Sensor and PG output states from Jablotron are read correctly, but PG outputs cannot be switched from TapHome Service
EXT sensor after replacement Replaced external sensor (temperature, humidity, CO2) still not communicating with the module Service
Bus Extender not recognized Bus Extender connected via USB is not detected by the Core Support