EN
50
F08
External temperature sensor TO disconnected, interrupted or
short-circuited.
Check sensor and replace it, if needed.
F10
Adjustment signal connection from controller disconnected,
interrupted or short-circuited.
Check connection of terminals 1 and 2 of INN-PDC-02 controller to
CN104 connector of board CR-UXRP71B.
F12
Compressor intake sensor TS disconnected, interrupted or
short-circuited.
Check sensor and replace it, if needed.
F29
Indoor unit EEprom problem.
Disconnect and reconnect power to the device and check correct
operation.
Replace and reprogram the CR-UXRP71B board.
F31
External unit EEprom problem.
Disconnect and reconnect power to the device and check correct
operation.
Replace and reprogram the external unit board.
L02
Parameter incompatibly between internal and external unit.
Check the automatic settings of the address again (paragraph
3.3.3Automatic address settingp<?>).
Contact RDZ S.p.A. Service to run programming again.
L08
No setting in the indoor unit.
L09
No setting in the indoor unit.
L10
No setting in the external unit.
L13
Incorrect settings of parameters in the indoor unit.
E01
Automatic setting of address has not been completed.
Wiring between internal and external unit are cut or not con-
nected correctly.
Check the connection of terminals 1 and 2 of the indoor unit
to the external unit (a shielded double-core cable, minimum
cross-section area 0.35 mm² kept separate from the electric power
cables).
Check the external unit control panel connection.
Check the automatic settings of the address again (paragraph
3.3.3Automatic address settingp<?>).
E03
Signal reception error by indoor unit.
E04
E06
Problems of communication between external and indoor
units.
E07
E15
Power of indoor unit lower than external unit.
Check device size and reconfigure the indoor unit.
E16
Power of external unit lower than indoor unit.
Check device size and reconfigure the indoor unit.
E20
Automatic addressing procedure interrupted.
Check the connection of terminals 1 and 2 of the indoor unit
to the external unit (a shielded double-core cable, minimum
cross-section area 0.35 mm² kept separate from the electric power
cables).
Check the external unit control panel connection.
Check the automatic settings of the address again (paragraph
3.3.3Automatic address settingp<?>).
E31
Problems of communication between external and indoor
units.
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