English 27
ERROR DESCRIPTION
Room sensor error.
What can I do?
The room unit must be serviced.
The operation will automatically be adjusted as follows:
The room sensor temperature defaults to the value of the
desired room temperature.
Auxiliary sensor error.
What can I do?
Check the type and connection of the auxiliary sensor.
If the error is not resolved, the room thermostat must be
serviced.
The operation will automatically be adjusted as follows:
Only the built-in temperature sensor operates. If this sensor
is also faulty, the operation is the same as that of Er1.
T2 external temperature sensor error.
What can I do?
Check the type and connection of the T2 sensor on the
controller.
If the error is not resolved, the controller must be serviced.
The operation will automatically be adjusted as follows:
The controller operates without being affected by the exter
-
nal temperature.
T1 supply line temperature sensor error.
What can I do?
Check the type and connection of the T1 sensor on the
controller.
If the error is not resolved, the controller must be serviced.
The operation will automatically be adjusted as follows:
The controller closes the mixing valve and turns off the
circulation pump.
