16.1 Troubleshooting after installation
Problem Indication Probable cause Solutions
The system does
not start
The power indicator in the controller is off There is no AC power to the controller 1. Check that the controller is connected
to AC power
2. Check the wiring in the 230 V
compartment
3. Check that there is 230 V AC power in
the wall socket
There is 230 V AC power in the wall socket Blown controller fuse or faulty power
cable
1. Replace the fuse and/or power cable
and plug
The thermostats is
faulty
Channel LEDs in the controller continue
flashing
The cable is not connected or a wire
is damaged
Check the wiring
16.2 Digital thermostats T-146, T-148 and T-149 alarms/problems
An alarm is sent when more than 1 hour have elapsed since the controller received the last communication from the thermostat.
The table below shows problems that can occur in the digital thermostats T-146 and T-148.
Indication Probable cause Solutions
The display is off The cable is not connected or a wire is damaged Check the wiring
No communication icon is
displayed on thermostat screen when
–/+ buttons are pressed
The cable is not connected or a wire is
damaged.
Check the wiring
The thermostat is broken Force the thermostat to transmit by changing the
temperature setpoint
Replace the thermostat
Relative humidity icon is displayed
(T-148 only)
The relative humidity limit is reached Lower the humidity level by increasing the ventilation or
temperature setpoint
The icon for floor temperature sensor
flashes
Faulty temperature sensor Check the connection of the floor sensor
Disconnect the floor temperature sensor and check it with an
ohmmeter. The value must be around 10 kohms
The icon for outdoor temperature
sensor flashes
Faulty temperature sensor Check the connection of the outdoor sensor
Disconnect the floor temperature sensor and check it with an
ohmmeter. The value must be around 10 kohms
The icon for indoor temperature sensor
flashes
Faulty temperature sensor Contact the installer or replace the thermostat
Disconnect the remote temperature sensor (if connected)
and check it with an ohmmeter. The value must be around
10 kohms
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