20
No.
Malfunction
Name
Dual-8
Code
Display
Operation
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
AC Status
Possible Causes
16
Outdoor
discharge
temperature
sensor is
open/short
circuited
F5
OFF 1S
and blink
7 times
During cooling and drying
operation, compressor stops
after operating for about 3
mins, while indoor fan
operates. During heating
operation, the complete unit
stops after 3 mins.
1.Outdoor temperature sensor has
not been connected well or is
damaged. Check it by referring to
the resistance table for
temperature sensor)
2.The head of temperature sensor
has not been inserted into the
copper tube
17
Limit/ decrease
frequency due to
overload
F6
OFF 1S
and blink
3 times
All loads operate normally,
while operation frequency for
compressor is decreased
Refer to the malfunction analysis
(overload, high temperature
resistant)
18
Decrease
frequency due to
over-current
F8
OFF 1S
and blink
once
All loads operate normally,
while operation frequency for
compressor is decreased
The input supply voltage is too
low. System pressure is too high.
19
Decrease
frequency due to
high air
discharge
F9
OFF 1S
and blink
twice
All modes operate normally,
while operation frequency for
compressor is decreased
Temperature is too high;
Malfunction of electric expansion
valve (EKV)
20
Limit/ decrease
frequency due to
anti freezing
FH
OFF 1S
and blink
4 times
All modes operate normally,
while operation frequency for
compressor is decreased
Poor air-return in indoor unit or fan
speed is too low
21
Voltage for DC is
too high
PH
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, the
unit stops operation.
1. Measure the voltage on
terminals L2 and S on terminal
block, if the voltage is higher than
265VAC, turn on the unit
2. If the AC input is normal,
measure the voltage of electrolytic
capacitor C on control panel (AP1)
if its normal, there is a malfunction
in the circuit, replace the control
panel (AP1)
22
Voltage of DC is
too low
PL
During cooling and drying
operation, compressor will
stop while indoor fan will
operate; During heating
operation, the complete unit
will stop
1. Measure the voltage of position
L2 and S on terminal block, if the
voltage is higher than 150VAC,
turn on the unit.
2. If the AC input is normal,
measure the voltage of electrolytic
capacitor C on control panel
(AP1), if normal, there is a
malfunction on the circuit, replace
the control panel (AP1)
23
Compressor Min
frequence in test
state
P0
Showing during min. cooling or
min. heating test
24
Compressor
rated frequence
in test state
P1
Showing during nominal cooling or
nominal heating test
25
Compressor
maximum
frequence in test
state
P2
Showing during middle cooling or
middle heating test
26
Compressor
intermediate
frequence in test
state
P3
Showing during middle cooling or
middle heating test
27
Overcurrent
protection of
phase current for
compressor
P5
During cooling and drying
operation, compressor stops
while indoor fan operates;
During heating operation, the
unit stops operation.
Refer to the malfunction analysis
(IPM protection, loss of
synchronism protection and over
current protection of phase current
for compressor.
28
Charging
malfunction of
capacitor
PU
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, the
complete unit stops.
Refer to the part three—charging
malfunction analysis of capacitor
29
Malfunction of
module
temperature
sensor circuit
P7
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, the
complete unit stops.
Replace outdoor control panel AP1
30
Module high
temperature
protection
P8
During cooling operation,
compressor will stop while
indoor fan will operate;
During heating operation, the
complete unit will stop
After the complete unit is de-
energized for 20mins, ensure the
thermal grease on IPM Module of
AP1 is sufficient. If not, replace
control panel AP1.
31
Decrease
frequency due to
high temperature
resistant during
heating
operation
H0
All modes operate normally,
while operation frequency for
compressor is decreased
Refer to the malfunction analysis
(overload, high temperature
resistant)
32
Static de-dusting
protection
H2
33
Overload
protection for
compressor
H3
OFF 1S
and blink
8 times
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, the
complete unit stops operation.
1. Wiring terminal OVC-COMP is
loosened. In normal state, the
resistance for this terminal should
be less than 1ohm.
2.Refer to the malfunction analysis
(discharge protection, overload)
34
System is
abnormal
H4
OFF 1S
and blink
6 times
During cooling and drying
operation, compressor stops
while indoor fan operates.
During heating operation, the
complete unit stops operation.
Refer to the malfunction analysis
(overload, high temperature
resistant)
Summary of Contents for 538FEQ009RBGA
Page 6: ...6 DIMENSIONS OUTDOOR Fig 3 Dimensions Fig 4 Dimensions Fig 5 Dimensions Fig 6 Dimensions...
Page 10: ...10 Outdoor Unit Fig 11 Sizes 09 12...
Page 47: ...47 Shut off power hold both ends of horizontal...
Page 48: ...48...
Page 49: ...49...
Page 50: ...50 ziptie side cutters...
Page 51: ...51...
Page 52: ...52...
Page 53: ...53...
Page 54: ...54...
Page 67: ...67 6 7 8...
Page 68: ...68 9 Remove electric box 10 Remove evaporator...
Page 69: ...69...
Page 70: ...70 11 Remove swing blade...
Page 71: ...71 12 Remove cross flow blade and motor...
Page 72: ...72 13 Remove drive box...
Page 84: ...84 APPENDIX Appendix 1 Reference Sheet of Celsius and Fahrenheit...
Page 89: ...89 UNIT BREAKDOWNS a b c d e...
Page 90: ...90 f g h...
Page 91: ...91...
Page 92: ...92...
Page 93: ...93...