Carrier 80AW1 Manual De Instalación página 25

Maintenance
0 No error
Inverter over-current protective circuit
operates (for a short period/time)
1
Short circuit voltage protection of main
circuit operates
4 Position detection circuit error
Current detection circuit error:
• Current value at AC side is high when
8
compressor is OFF
• Phase of power supply is missing
10 Outdoor heat exchanger sensor (TE)
20 Discharge temperature sensor (TD)
40 Outdoor fan error
DEF CDU
Communication error caused by
disconnection of cables between CDU
100
and 1PCB boards.
Heat sink temperature error (Detection of
temperature over specifi ed value)
200 Compressor Lock
400 Discharge temperature Error
800 Compressor breakdown
High-pressure protection by TE sensor
2000 (Temperature over specifi ed value was
detected)
Timeguard mode for too long time (more
DEF TIME
than 5 minutes)
CDU is not compliant with the hydronic
DEF CDU SIZE
module
For a detailed description of wiring and components name refer to the electrical schemes.
Example
See fi g. 21.
The fault code is DEF CDU 0200: the compressor is locked.
Inverter immediately stops if even restarted.
Check CDU board for cabling error
Position detection circuit operates when the compressor is
operating despite removal of 3P connector. Replace CDU board.
Compressor immediately stops even if restarted - check CDU board.
Check 3 phase power voltage and cables
Check temperature sensor TE in the CDU
Check connection to the CDU board
Check temperature sensor TD in the CDU
Check connection to the CDU board
Defective detection of position
Operation of outdoor fan over-current protection circuit 3
Outdoor fan locked
Check CDU board
Check cables between CDU and boards 1PCB
Abnormal overload operation of refrigerating cycle
Compressor fault - replace compressor
Defective cabling of compressor
Check 3 phase power voltage and cables
Check for refrigerant gas leaks
Failure of PMV
Check TD Sensor operation
Check power supply: AC 220-240V +/-10V
Overload operation of refrigerating cycle
Check current detection circuit at AC side
Overload operation of the refrigerant cycle
Check outdoor temperature sensor TE in the CDU
Check CDU board
Compressor case thermo Open
Check the communication connection
Switch OFF and ON the power supply
Check the part number of the product
Install the CDU corresponding to the hydronic module
80AW1- 80AWT - 80AW2
25