120
Check
code
Diagnostic functional operation
Determination and action
Number of
abnormalities
for
confirmation
Detailed
item
Operational cause
Backup
operation
Automatic
reset
P04
The high pressure switch failure
O
1.
2.
3.
4.
10 130
P05
The power supply voltage failure
O
1.
8 131
P07
Overheating of heat sink failure
O
1.
2.
4 131
P15
Detection of gas leak
O
1.
2.
3.
4.
5.
6.
8 131
P19
The 4-way valve inversion failure
O
1.
2.
3.
4 132
P20
High pressure protection operation
O
1.
2.
3.
4.
5.
6.
10 133
P22
Outdoor fan system failure
O
1.
2.
3.
8 134
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