115
PB
TROUBLESHOOTING
Diagnostic Code
s
No.
Malfunction
Name
Display Method of Indoor Unit
Display Method of Outdoor Unit
A/C status
Possible Causes
Dual‑8
Code
Display
Indicator Display (During blinking,
ON 0.5s and OFF 0.5s)
Indicator has 3 kinds of display status
and during blinking, ON 0.5s and
OFF 0.5s
Power
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
33
overload
protection
for compres‑
sor
H3
OFF 3s
and blink
3 times
OFF 1s
and blink
8 times
During cooling and drying op‑
eration, compressor will stop
while indoor fan will operate;
During heating operation,
the complete unit will stop
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 protec‑
tion, overload)
34
system is
abnormal
H4
OFF 3s
and blink
4 times
OFF 1s
and blink
6 times
During cooling and drying op‑
eration, compressor will stop
while indoor fan will operate;
During heating operation,
the complete unit will stop
operation.
Refer to the malfunction
analysis (overload, high
temperature resistant)
35
IPM protec‑
tion
H5
OFF 3S
and blink
5 times
OFF 1s
and blink
4 times
During cooling and drying op‑
eration, compressor will stop
while indoor fan will operate;
During heating operation,
the complete unit will stop
operation.
Refer to the malfunction
analysis (IPM protection, loss
of synchronism protection
and overcurrent protection of
phase current for compressor.
36
module
temperate is
too high
H5
OFF 3s
and blink
5 times
OFF 1s
and blink
10 times
37
internal
motor ( fan
motor) does
not operate
H6
OFF 3s
and blink
11 times
Internal fan motor, external
fan motor, compressor
and electric heater stop
operation,guide louver stops
at present location.
1. Bad contact of DC motor
feedback terminal.
2. Bad contact of DC motor
control end.
3.Fan motor is stalling.
4. Motor malfunction.
5. Malfunction of mainboard
rev detecting circuit.
38
desynchro‑
nizing of
compressor
H7
OFF 3s
and blink 7
times
During cooling and drying op‑
eration, compressor will stop
while indoor fan will operate;
During heating operation,
the complete unit will stop
operation.
Refer to the malfunction
analysis (IPM protection, loss
of synchronism protection
and overcurrent protection of
phase current for compressor.
39
PFC protec‑
tion
HC
OFF 3s
and blink 6
times
OFF 1s
and blink
14 times
During cooling and drying op‑
eration, compressor will stop
while indoor fan will operate;
During heating operation,
the complete unit will stop
operation.
Refer to the malfunction
analysis
Summary of Contents for FSHW091
Page 8: ...8 INTRODUCTION FSHSW09A1A FSHSW12A1A Figure 102 Indoor Units FSHSW18A3A FSHSW24A3A FSHSW36A3A ...
Page 47: ...47 INSTALLATION ...
Page 48: ...48 INSTALLATION Installation Tools ...
Page 72: ...72 WIRED CONTROLLER Display ...
Page 122: ...122 TROUBLESHOOTING Malfunction of IDUFanMotorU8 Service Manual No Start End ...
Page 146: ...146 WIRING DIAGRAMS Figure 8054 9 12KOutdoorUnitWiringDiagrams 60000706067401 3 2 N 1 C3 C4 ...
Page 158: ...158 FIgure 906 PARTS CATALOG 9KOutdoorUnit 28 27 29 31 30 32 ...
Page 160: ...160 PARTS CATALOG 12k OutdoorUnit 28 27 29 31 30 32 FIgure 907 ...