mundoclima 2022 Manuel page 77

MUCSR-H3
SERIES:
MUCR-H3
Error code
E1 High pressure protection
E2 Anti frost protection
E3 Low pressure protection (refrigerant leakage) / Refrigerant collection mode
E4 Discharge high temperature protection
E6 Communication malfunction between indoor and outdoor unit
E8 Indoor unit ventilation malfunction
E9 High level of condensates malfunction in the indoor unit
F0 Indoor unit room temperature sensor malfunction (15k)
F1 Indoor unit pipe temperature sensor malfunction (20k)
F2 Outdoor unit pipe temperature sensor malfunction (20k)
F3 Outdoor unit room temperature sensor malfunction (15k)
F4 Outdoor unit discharge temperature sensor malfunction (50k)
F5 Wire control room temperature sensor malfunction
C5 Capacity setting fault (possible indoor unit PCB failure)
EE Outdoor unit EEPROM fault
PF Temperature sensor fault in the electrical cabinet
H3
Compressor overload protection
H4
Overload protection
H5
IPM module protection (inverter) outdoor unit
H6 Outdoor unit ventilation malfunction
H7 Outdoor unit controller desynchronization protection of IPM module (inverter)
Hc Outdoor unit PFC module protection (only 48k model)
L1 Humidity sensor fault
Lc Outdoor unit starting up malfunction
Ld Outdoor unit phase protection (anti phase or phase missing)
LF
Power protection
Lp
Incompatibility malfunction between indoor and outdoor unit
U7
4 way valve fault (working mode opposite position)
P0 IPM module controller restart protection (inverter)
P5 Overcurrent protection
P6 Communication malfunction between main PCB and IPM module controller (inverter)
P7 IPM (inverter) or PFC module temperature sensor fault
P8 High temperature protection in IPM module (inverter) or PFC
P9 Zero crossing signal protection
PA
AC power protection (input)
PC / Pc
IPM module controller power fault (inverter)
Pd
Temperature sensor connection protection
PE Protection for fluctuation and abrupt temperature changes
PL Low voltage protection in bus DC
PH High voltage protection in bus DC
PU Power circuit fault
PP Power supply malfunction AC
ee
Chip memory fault in IPM controller (inverter)
MUSTR-H3
(CL20842-849)
(CL20862-869)
TROUBLESHOOTING
(CL20853-859)
Description
77
EN