Hitachi FSG Series Service Manual page 77

Checking item
5 Air flow ratio
Outdoor Expansion
6
Valve MV1 Opening
Outdoor Expansion
7
Valve MV2 Opening
Discharge Presure
8
(High)
9 Suction Pressure (Low)
Discharge Gas Temp. on
10 the Top of Compressor
MC1 (TD1)
Discharge Gas Temp. on
11 the Top of Compressor
MC2 (TD2)
(For 8, 10, 16, 20HP)
Discharge Gas Temp. on
12 the Top of Compressor
MC3 (TD3)
(For 16, 20HP)
Discharge Gas Temp. on
13 the Top of Compressor
MC4 (TD4)
(For 20HP)
Evaporating
14 Temperature 1 at
Heating
Evaporating
15 Temperature 2 at
Heating
(For 16, 20HP)
Ambient Air Temperature
16
(TO)
from Previous Page
”
PSW3
F o
PSW2
PSW3
o E 1
PSW2
PSW3
o E 2
PSW2
PSW3
P d
PSW2
PSW3
P 5
PSW2
PSW3
ó d 1
PSW2
PSW3
ó d 2
PSW2
PSW3
ó d 3
PSW2
PSW3
ó d 4
PSW2
PSW3
ó E 1
PSW2
PSW3
ó E 2
PSW2
PSW3
ó o
PSW2
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TROUBLESHOOTING
PSW2
Checking contents
1 6
PSW3
PSW2
3 8
PSW3
PSW2
1 0 0
PSW3
PSW2
1 8
PSW3 .
PSW2
0 3 4
PSW3
.
PSW2
0 255
= Open Circuited , = Short - circuited
1 0 0
PSW3
PSW2
0 255
= Open Circuited , = Short - circuited
9 0
PSW3
PSW2
0 255
= Open Circuited , = Short - circuited
1 0 0
PSW3
PSW2
0 255
= Open Circuited , = Short - circuited
9 0
PSW3
PSW2
-127 127
= Open Circuited , = Short - circuited
6
PSW3
PSW2
-127 127
= Open Circuited , = Short - circuited
2
PSW3
PSW2
-127 127
= Open Circuited , = Short - circuited
3 5
PSW3
1
69
0 16
~
0 100
~
0 100
~
0.0 3.0
~ (MPa)
0.09 0.99
~ (MPa)
1 142
~
1 142
~
1 142
~
1 142
~
-42 88
~
-42 80
~
-42 80
~
(%)
(%)
(°C)
(°C)
(°C)
(°C)
(°C)
(°C)
(°C)