ComfortStar CARAT18-CD, Service Manual

Page: 51 / 65

18 U5 □ ■
ƿ
■
19 P5 □ ƿ □ □
20 H1
21 H2
22 H3 □
ƿ ƿ
□
23 H4
24 H5 ■ □ ■ ■
25 HC □ ■
ƿ ƿ
26 H7 □
ƿ
■
ƿ
27 H0 ■ □ ƿ ƿ
28 Lc □
ƿ
□
ƿ
29 U1 □
ƿ
■ □
30 EE □ □ □ ■
31 PU □ ■ □ ■
32 P7 □ □ ■
ƿ
33 P8 ■ □
ƿ
■
is too high Blink 11
times
Fan motor works.
Heating: all will stop
Whole unit’s
current testing
malfunction
Compressor
current overcurrent
protection
Defrosting
Electrostatic dedust
protection
Compressor
overload
protection
System
abnormal
IPM protection
PFC protection
Heating, anti-high
temp. declines
Startsup
fail
Compressor
current
testing
circuit malfunction
EEPROM
malfunction
Capacitor
charge
malfunction
Module sensor
circuit diagram
Module
temp.
over high
protection
Off 3s
blink 13
times
Off 3s
blink 15
times
Off 3s
blink once
Off 3s
blink twice
Off 3s
blink 3
times
Off 3s
blink 4
times
Off 3s
blink 5
times
Off 3s
blink 6
times
Off 3s
blink 7
times
Off 3s
blink 10
times
Off 3s
blink 11
times
Off 3s
blink 13
times
Off 3s
blink 15
times
Off 3s
blink 17
times
Off 3s
blink 18
times
Off 3s
blink 19
times
Compressor
lose steps
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Under the heating mode,
compressor running, indoor
/outdoor fan motor stop working
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Overload normal works,
compressor running,
frequency declines
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
It is normal
function
The circuit on AP1 has
malfunction, replace the
outdoor unit AP1
Please refer to troubleshooting
(IPM protection, compressor
lose steps, compressor current
overcurrent protection)
Pls refer to troubleshooting
Pls refer to troubleshooting
Pls refer to troubleshooting
Pls refer to troubleshooting
Replace the outdoor control board AP1
Replace the outdoor control board AP1
Replace the outdoor control board AP1
Pls refer to Part 3 capacitor charging
fault of troubleshooting
Pls refer to troubleshooting
Pls refer to troubleshooting
To check whether the ambient Temp. of
IPM is too high or the heat-sinhing of IPM
is dirty else replace the outdoor baord AP1
If higher than 265VAC,
please cut off the power supply
and restart until back to normal
2. If input voltage is normal, testing
the voltage of electrolytic capacitor
on AP1 after turn on the unit.
There may be some problem and
replace the AP1 if the electrolytic
capacitor voltage range at 200-280V
1. Wire terminal OVC-
COMP loosen or circuit,
has problem, the resistance of
SAT should be lower than
1 ohm.
2.Please refer to troubleshooting
(exhaust/overload protection)