Velleman VMB1TCW - Manual (Page 58)

OPERATING THE TEMPERATURE SENSOR VMB1TS
Anti-freeze, night, day or comfort mode indication
In rooms that have a temperature sensor VMB1TS the heating (or air-conditioning) can be set in 4 different modes:
comfort, day, night or anti-freeze. Every mode has its own desired temperature setting.
The selected mode is indicated with LEDs.
The sensor module is set to anti-freeze mode when the comfort, day and night mode LEDs are off.
When the comfort, day or night mode LED is flashing, the sensor module is set temporarily (sleep timer) to the indicated
mode and normal program is suspended during that ‘sleep’ time.
Anti-freeze Night Day Comfort
Cooling or heating mode indication
When the temperature sensor is configured to control an air-conditioning system, the frost flower LED (upper LED) will be
lit. Setting the heating or cooling mode can only be done through a temperature controller (VMB1TC) or through the
Velbus link program.
Heating mode Cooling mode
Air-conditioner or heater active indication
When the heater (valve open) or air-conditioner is active, a red LED will be lit.
The red output LED can indicate following error conditions:
 Flashing (short on, long off): the heater/cooler should be off but it did not
receive the command from the relays module.
 Flashing (short off, long on): the heater/cooler should be on but it did not
receive the command from the relays module.
 Fast flashing: configuration of the sensor chip failed.
Note: as long as the error condition exists the output status will be re-
transmitted every minute.