Hitachi RPI-0.8FSG1 Service Manual page 90

TROUBLESHOOTING
Although the wireless remote controller is used for wall type indoor unit with built-in receiver part, the
alarm code can be checked by connecting PC-P1H to the connector (Blue) of the unit as shown below and
pressing the operation switch.
NOTES:
1. The unit is not operated by pressing operation switch.
2. The above function is available only when alarm occurs.
3. The PCB check by remote controller is not available.
4. The indication is the data when connecting PC-P1H, not the data before the alarm occurs.
(1) Contents of Check Mode 1
The next indication is shown by pressing
pressed the previous indication is shown.
Temperature Indication
Indoor Unit Temp.
1
o
Setting ( C)
Indoor Unit
2 Intake Air Temp.
at Thermistor (
Indoor Unit
3 Discharge Air Temp.
at Thermistor (
Indoor Unit Heat
4 Exchanger Liquid
o
Pipe Temp. (
Temperature at
5
Remote Sensor (
Outdoor Unit
6 Ambient Air Temp.
o
( C)
Indoor Unit Heat
7 Exchanger Gas
o
Pipe Temp. (
Outdoor Unit
8 Evaporating Temp.
during Heating (
9 Control Information
Discharge Gas
10 Temp. at the Top of
Comp. Chamber (
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1-80
o
C)
o
C)
C)
o
C)
C)
o
C)
o
C)
the part of "TEMP" switch. If the
Indication of Category Code
Indication of Temperature, etc.
...... Temperature Displayed
Normal
Abnormal
129
F F
255
127
See "1.3.1 Self-Checking of PCB's using
Remote Control Switch" in pages 1-103, 104.
(NOTE 1) During transient period such as starting time, etc.,
"- -" may be indicated for a limited time.
This is indicated only when a remote sensor is connected.
The indication of "- -" is normally indicated.
RPK series can not connect a remote sensor.
Therefore indication is "- -".
This indicates the internal information for the remote
control switch. In case of SET-FREE, this indication
shows the operating compressor quantity.
(ex.) During two compressors operation, average
temperature of two compressors is indicated.
In case that temperature is higher than 126
part of "TEMP" switch is
- - Thermistor Open-circuited
or PCB Defected
or
(Temp. for Top of Comp.: 129)
Thermistor Short-circuited
or PCB Defected)
or
or
(Temp. for Top of Comp.: 127)
o
C, " ".