Innova 3in1 5M Installer Manual page 53

Symptoms and inspection points
Alarms displayed Cause
P01 Jumper on connector CN076 of CR-UXR-P71B board missing or disconnected.
P03 Anomalous compressor discharge temperature > o = at 111 °C.
P04 External unit high pressure switch tripped.
One of phases missing or incorrect connection of power phases in three-phase versions. No
P05
neutral in single-phase versions.
P09 Jumper on connector CN080 of CR-UXR-P71B board missing or disconnected.
P10 Jumper on connector CN030 of CR-UXR-P71B board missing or disconnected.
P15 Insufficient refrigerant charge.
P16 Excessive compressor draw.
P19 Four-way valve jammed.
High refrigerant pressure protection activated by excessive temperature on the external
P20
condenser.
P22 External fan motor not working correctly. External fan inverter circuit protection tripped.
P26 Compressor inverter circuit protection tripped.
P29 Compressor not working properly.
H01 Surge detected by inverter board of the compressor.
H05 External unit control board software to be updated.
H31 Problems of communication between external and indoor units.
F01 Liquid sensor E1 on indoor unit disconnected, interrupted or short-circuited.
F02 Condensation sensor E2 sensor on indoor unit disconnect-ed, interrupted or short-circuited.
F04 Compressor delivery sensor TD disconnected, interrupted or short-circuited.
F06 Liquid sensor C1 on external unit battery disconnected, interrupted or short-circuited.
F07 Condensation sensor C2 on external unit battery disconnected, interrupted or short-circuited. Check sensor and replace it, if needed.
F08 External temperature sensor TO disconnected, interrupted or short-circuited.
F10 Adjustment signal connection from controller disconnected, interrupted or short-circuited.
F12 Compressor intake sensor TS disconnected, interrupted or short-circuited.
F29 Indoor unit EEprom problem.
F31 Indoor unit EEprom problem.
L02 Parameter incompatibly between internal and external unit.
L08 No setting in the indoor unit.
L09 No setting in the indoor unit.
L10 No setting in the indoor unit.
L13 Incorrect settings of parameters in the indoor unit.
Automatic address setting has not been completed.
E01
Wiring between internal and external unit are cut or not connected correctly.
E03 Signal reception error by indoor unit.
E04 Signal reception error by indoor unit.
E06 Problems of communication between external and indoor units.
E07 Problems of communication between external and indoor units.
E15 Power of indoor unit lower than external unit.
E16 Power of external unit lower than indoor unit.
E20 Automatic addressing procedure interrupted.
E31 Problems of communication between external and indoor units.
Solution
Check connection.
Check cooling cycle (possibly excessive refrigerant charge). Check opening of cooler taps.
Check TD compressor delivery sensor and replace it if needed.
In the summer cycle, check the free circulation of air on the outdoor unit. Check the
refrigerant charge.
In the winter cycle, check that the refrigerant taps are open.
Check for presence and sequence of R, S and T phases and that the device is not powered
with two phases in one-phase systems.
Check connection.
Check connection.
Check the cooling circuit to locate the possible leakage.
Check values of resistors.
Check electric power and operation of the four-way valve.
Check cleanness of external heat exchanger and respect of minimum clearances. Check
operation of the fan and correct disposal of air from the condenser.
Check free fan movement. Replace fan motor inverter board.
Check opening of cooler taps.
Disconnect and reconnect power to the device and check that the compressor starts up
correctly.
Check inverter board wiring and replace it, if needed.
Cooling problem of the radiating plate of the inverter board. Check cleanness of the heat sink.
Check electric connections of the compressor.
Contact Technical Service Centre for updating.
Contact Technical Service Centre for replacement.
Check sensor and replace it, if needed.
Check sensor and replace it, if needed.
Check sensor and replace it, if needed.
Check sensor and replace it, if needed.
Check sensor and replace it, if needed.
Check connection of terminals 1 and 2 of INN-PDC-02 controller to CN104 connector of board
CR-UXRP71B.
Check sensor and replace it, if needed.
Disconnect and reconnect power to the device and check correct operation. Replace and
reprogram the CR-UXRP71B board.
Disconnect and reconnect power to the device and check correct operation. Replace and
reprogram the external unit board.
Check the automatic settings of the address again. Contact Technical Service Centre to run
programming again.
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.
Check device size and reconfigure the indoor unit.
Check device size and reconfigure the indoor unit.
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.
TROUBLESHOOTING
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