1
2
Installation and Maintenance
34
Wrong connection of communication wire or
malfunction of expansion valve (free match)
dn
/
/
/
35
Malfunction of current detection for the
complete unit
U5
Blinks for
13 imes
36
Wrong connection of communication wire or
status of detecting malfunction of expansion
valve (free match)
dd
/
/
/
37
Mode conflict
E7
Blinks
for 7
times
38
Refrigerant reclaiming mode
Fo
Blinks
once
Blinks
once
39
Oil return under defrosting or heating
H1
Blinks
once
Blinks
twice
40 Nominal cooling or heating (capacity test code)
P1
/
/
/
41
Max. cooling or heating (capacity test code)
P2
/
/
/
42
Middle cooling or heating(capacity test code)
P3
/
/
/
43
Min. cooling or heating(capacity test code)
P0
/
/
44
Failure of startup of compressor
Lc
Blinks for
11 times
45
High discharge temperature protection of
compressor
E4
Blinks
for 4
times
Blinks for
7 times
46
Overload protection
E8
Blinks
for 8
times
Blinks for
6 times
47
Overcurrent protection for the complete unit
E5
Blinks
for 5
times
Blinks for
5 times
48
Overcurrent protection for the complete unit
P5
Blinks for
15 times
49
Desynchronizing of compressor
H7
Blinks for
7 times
50
Lack/reverse phase protection of
Ld
/
/
/
51
Module current protection (IPM protection)
H5
Blinks for
5 times
Blinks for
4 times
52
Overlow voltage protection for DC bus bar
PL
Blinks for
21 times
Blinks for
12 times
53
Overhigh voltage protection for DC bus bar
PH
Blinks for
11 times
Blinks for
13 times
54
PFC protection
HC
Blinks for
6 times
Blinks for
14 times
55
Overhigh power protection (not for outdoor
L9
Blinks
for 20
times
Blinks for
9 times
56
Abnormal reversing of 4-way valve
U7
Blinks for
20 times
57 Frequency limit/decrease for current protection
of the complete unit
F8
Blinks for
8 times
Blinks
once
58 Frequency limit/decrease for current protection
of the module (phase current)
En
/
/
/
59
Frequency limit/decrease for high discharge
temperature
F9
Blinks for
9 times
Blinks
twice
60
Frequency limit/decrease for freeze protection
FH
Blinks
twice
Blinks
twice
Blinks
for 4
times
61
Frequency limit/decrease for overload
F6
Blinks for
6 times
Blinks
for 3
times
62
Frequency limit/decrease for module
temperature protection
EU
Blinks for
6 times
Blinks for
6 times
Blinks
for 11
times
63
Oil return in cooling
F7
Blinks for
7 times
64
Cold air prevention
E9
Blinks
for 9
times
65
Freeze protection
E2
Blinks
twice
Blinks for
3 times
66
Reading malfunction of EEPROM
Blinks for
11 times
67
Reaching temperature for turning on the unit
Blinks
for 8
times
68
Frequency limit (power)
Blinks
for
13time
s
69
Malfunction of outdoor fan
Display is
controlled
by remote
control
Blinks
for 14
times
Содержание DHY09CSB21S
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