Hitachi FSG1 Series Technical Catalogue page 400

TROUBLESHOOTING
18
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18.3.2 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.
Temperature indication
Indoor Unit
1 Intake Air Temp.
at Thermistor (°C)
¯
Indoor Unit
2 Discharge Air Temp.
at Thermistor (°C)
¯
Indoor Unit Exchanger
3 Liquid Pipe Temp.
(Freeze protection) (°C)
¯
Outdoor Aire
4
Temperature (°C)
¯
Indoor Heat
5 Exchanger gas Pipe
Temp. (°C)
¯
Evaporating Temp. at
6
Heating (°C)
¯
7 Control information
¯
Discharge Gas Temp.
8 at the Top of Comp.
Chamber (°C)
¯
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Indication of Category Code
Indication of Temperature, etc
91 23
92 50
93 25
94 12
95 25
96 03
97 --
98 45
Normal . . .
Temperature displayed
(Thermistor Open circuited
– –
or PCB defected)
Abnormal or
(Temp. for Top of Comp.)
129
(Thermistor Short circuited
FF
or PCB defected)
or
255
or
127
See "18.6 Self-Checking of PCB's
using Remote Control Switch"
?
NOTE:
1. During a transient period such as starting time, etc. "--" may be
indicated for a limited time.
2. All the data during check mode 2 will be changed to "00" if a
power failure occurs during alarm indication.
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 two compressors are
running
(Temp. for Top of Comp.)