42
Installation and Maintenance
Service Manual
6
Indoor unit
motor no
feedback
H6
off 3s
blink 11
times
Whole unit will stop to run
1.Poor insert for GPF
2.Indoor control board AP1
malfunction
3.Indoor motor M1 malfunction
7
Jump wire cap
malfunction
protection
C5
off 3s
blink
15 times
Whole unit will stop to run
Indoor control board AP1 jump
cap poor connected please
reinsert or replace the jump
cap
8
Indoor ambient
sensor open
circuit,short
circuit
F1
off 3s
blink
once
Cooling dehumidifying:
indoor fan motor is
running other overloads
will stop;heating whole
unit will stop to run.
1.Room temp sensor is
not connected with the
control panel AP1
2.Room temp sensor is
damaged
9
Indoor
evaporator
temperature
sensor is
open/short
circuited
F2
OFF 3S
and blink
twice
During cooling and drying
operation, indoor unit will
operate while other loads
will stop; During heating
operation, the complete unit
will stop operation.
1.Room temperature sensor
hasnt been connected well with
indoor units control panel AP1
(refer to the wiring diagram for
indoor unit);
2.Room temperature sensor is
damaged (please refer to the
resistance table of temperature
sensor)
10
Outdoor
ambient
temperature
sensor is
open/short
circuited
F3
OFF 3S
and blink
3 times
ƶ
ƶ
ƿ
Ƶ
During cooling and drying
operating, compressor stops
while indoor fan operates;
During heating operation,
the complete unit will stop
operation
Outdoor temperature sensor
hasnt been connected well or
is damaged. Please check it by
referring to the resistance table
for temperature sensor)
11
Outdoor
condenser
temperature
sensor is
open/short
circuited
F4
OFF 3S
and blink
4 times
ƶ
ƶ
ƿ
ƶ
During cooling and drying
operation, compressor stops
while indoor fan will operate;
During heating operation,
the complete unit will stop
operation.
Outdoor temperature sensor
hasnt been connected well or
is damaged. Please check it by
referring to the resistance table
for temperature sensor)
12
Outdoor
discharge
temperature
sensor is
open/short
circuited
F5
OFF 3S
and blink
5 times
ƶ
ƶ
ƿ
ƿ
During cooling and drying
operation, compressor will
sop
after operating for about 3
mins,
while indoor fan will operate;
During heating operation,
the
complete unit will stop after
operating for about 3 mins.
1.Outdoor temperature sensor
hasnt been connected well or
is damaged. Please check it by
referring to the resistance table
for temperature sensor)
2.The head of temperature
sensor hasnt been inserted
into the copper tube
13
Limit/decrease
frequency due
to
overload
F6
OFF 3S
and blink
for 6
times
Ƶ
ƶ
ƿ
ƿ
All loads operate normally,
while
operation frequency for
compressor is decreased
Refer to the malfunction
analysis (overload, high
temperature resistant)
14
Decrease
frequency due
to
overcurrent
F8
OFF 3S
and blink
8 times
Ƶ
Ƶ
ƶ
Ƶ
All loads operate normally,
while
operation frequency for
compressor is decreased
The input supply voltage is too
low;
System pressure is too high
and overload
15
Decrease
frequency due
to
high air
discharge
F9
OFF 3S
and blink
9 times
Ƶ
Ƶ
ƶ
ƶ
All loads operate normally,
while
operation frequency for
compressor is decreased
Overload or temperature is too
high;
5HIULJHUDQWLVLQVXI¿FLHQW
M a l f u n c t i o n o f e l e c t r i c
expansion valve (EKV)
16
Malfunction
of complete
units current
detection
U5
OFF 3S
and blink
13 times
ƶ
Ƶ
ƿ
Ƶ
During cooling and drying
operation, the compressor
will
stop while indoor fan will
operate;
During heating operating,
the complete unit will stop
operation.
Theres circuit malfunction on
outdoor units control panel
A P 1 , p l e a s e r e p l a c e t h e
outdoor units control panel
AP1.
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