24
Table 4 Meaning of Each Error
Error
Code
Error
Error
Error
Code
F1
Drive board communication error
P6
F2
Compressor overheating protection
H3
Return air temperature sensor open/short
circuited
b5
Indoor and outdoor units unmatched
LP
evaporator temperature sensor open/short
circuited
b7
dn
IPM temperature sensor open/short circuited
P7
Indoor unit liquid valve temperature sensor
open/short circuited
E7
F3
Fo
Pump-down
F4
Indoor gas valve temperature sensor open/
short circuited
Defrost or oil return
Outdoor unit condenser mid-tube temperature
sensor open/short circuited
Communication line misconnected or
expansion valve error
F5
Forced defrosting
H1
Indoor and outdoor communication error
E6
Compressor startup failure
Lc
DC bus under-voltage protection
PL
High discharge temperature protection
E4
DC bus over-voltage protection
PH Overload protection
E8
Outdoor ambient temperature sensor open/
short circuited
U1
Whole unit over-current protection
E5
Compressor demagnetization protection
HE Over phase current protection
P5
PFC protection
Hc
Compressor desynchronizing
H7
P8
IPM Current protection
H5
Over-power protection
L9
IPM Temperature Protection
Discharge temperature sensor open/short
circuited
Ld
F0
F8
Capacitor charging error
PU
Compressor phase current sensing circuit
error
Frequency restricted/reduced with whole
unit current protection
Compressor phase lo ss/reversal
protection
En
High pressure protection
E1
System charge shortage or blockage
protection
F9
Low pressure protection
E3
Frequency restricted/reduced with IPM
current protection
FH
Compressor stalling
LE
Frequency restricted/reduced with high
discharge temperature
F6
Over-speeding
LF
dc
U0
Frequency restricted/reduced with anti-
freezing protection
EU
Drive board temperature sensor error
PF
Indoor unit full water error
E9
AC contactor protection
P9
Anti-freezing protection
E2
PE
Temperature drift protection
AC input voltage abnormal
PP
Sensor connection protection
Pd
Whole unit current sensing circuit error
U5
DC bus voltage drop error
U3
4-way valve reversing error
U7
Outdoor fan 1 error protection
L3
Motor stalling
Indoor fan tripping error
H6
Outdoor fan 2 error protection
Frequency restricted/reduced with
overload protection
LA
PG motor zero-crossing protection
U8
Frequency restricted/reduced with IPM
temperature protection
compressor inhalation temperature sensor error
Wired Controller
SWC-04
Содержание SWC-04
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