Hitachi FS3 Series, Service Manual

Page: 74 / 240

1
66
TROUBLESHOOTING
n
CONTENTS OF CHECK MODE 2
The latest data of the first three indoor units only connected
serially are indicated when more than three indoor units are
connected to one remote control switch.
By pressing the
}
part of "TEMP" switch, the next display is
indicated. If the part
~
of "TEMP" switch is pressed, the
previous display is indicated.
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91 23
1
Indoor Unit
Intake Air Temp.
at Thermistor (°C)
”
92 50
2
Indoor Unit
Discharge Air Temp.
at Thermistor (°C)
”
93 25
3
Indoor Unit Exchanger
Liquid Pipe Temp.
(Freeze protection) (°C)
”
94 12
4
Outdoor Aire
Temperature (°C)
”
95 25
5
Indoor Heat
Exchanger Gas Pipe
Temp. (°C)
”
96 03
6
Evaporating Temp. at
Heating (°C)
”
97 --
7 Control information
”
98 45
8
Discharge Gas Temp.
at the Top of Comp.
Chamber (°C)
”
to next page
Normal
Abnormal
. . .
Temperature displayed
– –
129
(Thermistor Open circuited
or PCB defected)
(Temp. for Top of Comp.)
FF
or
(Thermistor Open circuited
or PCB defected)
255
or
127
or
(Temp. for Top of Comp.)
Indication of Category Code
Indication of Temperature, etc
See 1.3.1. Self-Checking of PCB’s
using Remote Control Switch" in pages 1-82,83
This is an indication for internal information for the remote control
switch.
This does not have any specific meaning.
The average temperature is indicated when more than one
compressors are running
Note 1: During a transient period such as statring time, etc. "--" may
be indicated for a limited time.
Note 2: All the data during check mode 2 will be changed to "00" if a
power failure occurs during alarm indication.