9H+5&'&
17
Fault
Chapter 7
7.3 Display codes
Table fault codes
Fault code
Cause
Action user
Action installer
F2
The inlet fan has stopped.
• Contact the installer.
5HSODFHWKHLQOHWIDQLWLVGHIHFWLYH
F5
The outlet fan has stopped.
• Contact the installer.
5HSODFHWKHRXWOHWIDQLWLVGHIHFWLYH
F9
The temperature sensor that
measures the temperature of the
input air is defective.
• Contact the installer.
• Check the wiring from the sensor to the basic pcb
• Check the sensor connection to the wiring.
• Replace the sensor.
F10
The temperature sensor that
measures the temperature of the
output air is defective.
• Contact the installer.
• Check the wiring from the sensor to the basic pcb.
• Check the sensor connection to the wiring.
• Replace the sensor.
Note!
If setting 2 does not work with a mechanical rpm control device
such as a multiple switch, the RJ connector has been connec
ted the wrong way round. Cut off one of the RJ connectors
to the rpm control and mount a new connector the other way
round.