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Display Method of Indoor Unit
Indicator Display (during
Malfunction
blinking, ON 0.5s and OFF
Dual-8
NO.
Name
0.5s)
Code
Display
Operation
Indicator
Compressor
intermediate
26
P3
frequence in
test state
Overcurrent
protection of
27
phase
P5
current for
compressor
Charging
malfunction
28
PU
of capacitor
Malfunction
of module
29
P7
temperature
sensor circuit
Module high
30
temperature
P8
protection
Decrease
frequency
due to high
temperature
31
H0
resistant
during
heating
operation
Static
32
dedusting
H2
protection
Overload
33
protection for
H3
compressor
Display Method of Outdoor
Indicator has 3 kinds of
display status and during
blinking, ON 0.5s and OFF
0.5s
Cool
Heating
Yellow
Indicator
Indicator
Indicator
Indicator
(during
(during
blinking,
blinking,
ON
ON
0.25s
0.25s
and OFF
and OFF
0.25s)
0.25s)
OFF 3S
and blink
15 times
OFF 3S
and blink
17 times
OFF 3S
and blink
18 times
OFF 3S
and blink
19 times
OFF 3S
and blink
10 times
OFF 3S
and blink
twice
OFF 3S
OFF 1S
and blink
and blink
3 times
8 times
Unit
A/C status
Red
Green
Indicator
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
operation.
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
During cooling operation,
compressor will stop while
indoor fan will operate;
During heating operation, the
complete unit will stop
All loads operate normally,
while
operation frequency for
compressor is decreased
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
operation.
Possible Causes
Showing during middle cooling or
middle heating test
Refer to the malfunction
analysis (IPM protection, loss
of synchronism protection and
overcurrent protection of phase
current for compressor.
Refer to the part three—charging
malfunction analysis of capacitor
Replace outdoor control panel AP1
After the complete unit is de-
energized for 20mins, check
whether the thermal grease on IPM
Module of outdoor control panel
radiator is inserted tightly. If its no
use, please replace control panel
AP1.
Refer to the malfunction analysis
(overload, high temperature
resistant)
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)
33
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