Hitachi FS3 Series, Service Manual

Page: 77 / 240

1
TROUBLESHOOTING
69
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5 Air flow ratio
F o
1 6
0
~
16
6
Outdoor Expansion
Valve MV1 Opening
o E 1
3 8
0
~
100
(%)
7
Outdoor Expansion
Valve MV2 Opening
o E 2
1 0 0
0
~
100
(%)
8
Discharge Presure
(High)
P d
1 8
0
.
0
~
3
.
0
(MPa)
9 Suction Pressure (Low)
P 5
0 3 4
0
.
09
~
0
.
99
(MPa)
0
= Open Circuited ,
255
= Short - circuited
10
Discharge Gas Temp. on
the Top of Compressor
MC1 (TD1)
ó d 1
1 0 0
1
~
142
(°C)
0
= Open Circuited ,
255
= Short - circuited
11
Discharge Gas Temp. on
the Top of Compressor
MC2 (TD2)
ó d 2
(For 8, 10, 16, 20HP)
9 0
1
~
142
(°C)
0
= Open Circuited ,
255
= Short - circuited
12
Discharge Gas Temp. on
the Top of Compressor
MC3 (TD3)
ó d 3
(For 16, 20HP)
1 0 0
1
~
142
(°C)
0
= Open Circuited ,
255
= Short - circuited
13
Discharge Gas Temp. on
the Top of Compressor
MC4 (TD4)
ó d 4
(For 20HP)
9 0
1
~
142
(°C)
-127
= Open Circuited ,
127
= Short - circuited
14
Evaporating
Temperature 1 at
Heating
ó E 1
6
-42
~
88
(°C)
-127
= Open Circuited ,
127
= Short - circuited
15
Evaporating
Temperature 2 at
Heating
ó E 2
(For 16, 20HP)
2
-42
~
80
(°C)
-127
= Open Circuited ,
127
= Short - circuited
16
Ambient Air Temperature
(TO)
ó o
3 5
-42
~
80
(°C)
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