Cooper & Hunter CHV-5S224SNMX, Service Manual

Page: 76 / 125

MAINTENACE 0 74 0
CHV
5 COM PACT MULTI VRF UNIT
SERVICE M ANUAL
Malfunction of high-pressure switch Fd E0 Fd
AC current protection P5 P0 P5
IPM protection P6 P0 P6
Drive IPM module protection of compressor P7 P0 P7
Drive IPM module overheating protection of compressor P8 P0 P8
Desynchronizing protection of inverter compressor P9 P0 P9
High voltage protection of compressor ’s drive DC busbar PH P0 PH
Drive current detection circuit malfunction of compressor PC P0 PC
Low voltage protection of compressor ’s drive DC busbar PL P0 PL
Phase-lacking of inverter compressor PE P0 PE
Drive charging circuit malfunction of compressor PF P0 PF
Demagnetization protection PU P0 PU
Communication malfunction between indoor and outdoor
units, indoor unit’s wired controller
C0 C0 C0
Communication malfunction between main controller and
inverter compressor driver
C2 C2 C2
Phase-lacking protection of power U3 E0 U3
Malfunction of fan H0 H0 H0
1.1.2 Error code of limiting frequency reduction protection
Error Item Code Display
Limited frequency reduction for high pressure protection FA
Only the outdoor unit displays
the code
Limited frequency reduction for low pressure protection FH
Limited frequency reduction for discharge temperature protection F9
Limited frequency reduction for AC current protection F8
Limited frequency reduction for power protection FC
Limited frequency reduction for IPM temperature protection FL
1.1.3 Operation code
Operation Code Display
Trail run A0
Both units display the code
Fluorine recycle A2
Defrosting A3
Oil return A4
Testing online A5