29
Service Manual
Malfunction and Mode Display Sheet
Malfunction name
Malfunction type
Double 8
Display of indicator
Operation
indicator
Cooling
indicator
Heating
indicator
Zero-cross detection circuit malfunction
Hardware
malfunction
U8
blinks 17 times
Malfunction protection of jumper cap
Hardware
malfunction
C5
blinks 15 times
No feedback of indoor motor
Hardware
malfunction
H6
blinks 11 times
Indoor ambient temperature sensor is
open/short- circuited
Hardware
malfunction
F1
blinks 1 times
Indoor evaporator temperature sensor is
open/short-circuited
Hardware
malfunction
F2
blinks 2 times
Liquid valve temperature sensor is
open/short-circuited
Hardware
malfunction
b5
blinks 19 times
Gas valve temperature sensor is
open/short-circuited
Hardware
malfunction
b7
blinks 22 times
Module temperature sensor is
open/short-circuited
Hardware
malfunction
P7
blinks 18 times
Outdoor ambient temperature sensor is
open/short- circuited
Hardware
malfunction
F3
blinks 3 times
Outdoor condenser inlet pipe temperature
sensor is open/short- circuited
Hardware
malfunction
A5
Outdoor condenser middle pipe
temperature sensor is open/short- circuited
Hardware
malfunction
F4
blinks 4 times
Outdoor condenser outlet pipe temperature
sensor is open/short- circuited
Hardware
malfunction
A7
/
/
/
Outdoor discharge temperature sensor is
open/short- circuited
Hardware
malfunction
F5
blinks 5 times
Communication malfunction of indoor
unit and outdoor unit
Hardware
malfunction
E6
blinks 6 times
Compressor phase current circuit
detection malfunction
Hardware
malfunction
U1
blinks 12 times
Compressor demagnetization protection
Hardware
malfunction
HE
blinks 14 times
DC busbar voltage drop malfunction
Hardware
malfunction
U3
blinks 20 times
Module temperature protection
Hardware
malfunction
P8
blinks 19 times
shortage of freon or blockage protection
for the system
Hardware
malfunction
F0
blinks 10 times
Capacitor charging malfunction
Hardware
malfunction
PU
blinks 17 times
High pressure protection for the system
Hardware
malfunction
E1
blinks 1 times
Low pressure protection for the system
Hardware
malfunction
E3
blinks 3 times
Compressor blockage
Hardware
malfunction
LE
/
/
/
Drive module reset
Hardware
malfunction
P0
/
/
/
Overspeed
Hardware
malfunction
LF
/
/
/
Drive board ambient temperature sensor
malfunction
Hardware
malfunction
PF
/
/
/
AC contactor protection
Hardware
malfunction
P9
/
/
/
Temperature drift protection
Hardware
malfunction
PE
/
/
/
Sensor connection protection
Hardware
malfunction
Pd
/
/
/
Drive board communication malfunction
Hardware
malfunction
P6
blinks 16 times
Compressor heat overload protection
Hardware
malfunction
H3
blinks 3 times
Indoor unit and outdoor unit do not
match
Hardware
malfunction
LP
blinks 19 times
Memory chip malfunction
Hardware
malfunction
EE
blinks 15 times
Wrong connection of communication
cable or expansion valve malfunction
Hardware
malfunction
dn
/
/
/
Complete unit current detection
malfunction
Hardware
malfunction
U5
blinks 13 times
Wrong connection of communication
cable or expansion valve malfunction
detection mode
Running mode
dd
/
/
/
Mode conflict
Running mode
E7
blinks 7 times
Refrigerant recovery mode
Running mode
Fo
blinks 1 times
blinks 1 times
Defrosting or oil return in heating mode
Running mode
H1
blinks 1 times
Rating cooling or heating
Running mode
P1
/
/
/
Max cooling or heating
Running mode
P2
/
/
/
Middle cooling or heating
Running mode
P3
/
/
/
Min cooling or heating
Running mode
P0
/
/
/
Compressor losing of synchronism
Displayed on the
remote controller in
200s; display on the
nixie tube after 200s
H7
blinks 7 times
Compressor start failure
Lc
blinks 11 times
High discharge temperature protection of
compressor
E4
blinks 4 times
Overload protection
E8
blinks 8 times
Complete unit overcurrent protection
E5
blinks 5 times
Phase current overcurrent protection
P5
blinks 15 times
Module current protection
H5
blinks 5 times
4-way valve commutation malfunction
U7
blinks 20 times
Complete unit current protection with
limiting frequency or lowing down
frequency
Displayed on the
remote controller
F8
blinks 8 times
Module current protection with limiting
frequency or lowing down frequency
Displayed on the
remote controller
En
/
/
/
Overhigh discharge with limiting
frequency or lowing down frequency
Displayed on the
remote controller
F9
blinks 9 times
Freeze protection with limiting frequency
or lowing down frequency
Displayed on the
remote controller
FH
blinks 2 times
blinks 2 times
Overload with limiting frequency or
lowing down frequency
Displayed on the
remote controller
F6
blinks 6 times
Module temperature protection with
limiting frequency or lowing down
frequency
Displayed on the
remote controller
EU
blinks 6 times
blinks 6 times
Oil return in cooling mode
Displayed on the
remote controller
F7
blinks 7 times
Cold blow protection
Displayed on the
remote controller
E9
blinks 9 times
Freeze protection
Displayed on the
remote controller
E2
blinks 2 times
外风机故障保护 ( 外风机堵转或未接——当有双
外风机时 L3 表示风机 1 而 LA 表示风机 2)
Hardware
malfunction
LA
blinks 24 times
直流风机故障 / 外风机故障保护 ( 外风机堵转或
未接——当有双外风机时 L3 表示风机 1 而 LA 表
示风机 2)
Hardware
malfunction
L3
blinks 23 times
Summary of Contents for MV-P09BI
Page 1: ...MULTI VARIABLE SERIES CONSOLE MV PxxBI SERVICE MANUAL EN ...
Page 8: ...4 Service Manual 3 Outline Dimension Diagram 3 1 Indoor Unit 700 215 600 398 205 22 Unit mm ...
Page 49: ...PARTS GUIDE MV P09BI MV P12BI MV P18BI CONSOLE MULTI VARIABLE SERIES 103 ...
Page 50: ...MV P09BI ...
Page 52: ...MV P12BI ...
Page 54: ...MV P18BI ...
Page 56: ......
