Temperature Indication - Hitachi RAS-(3-6)HVNC1(E) Service Manual

8 Troubleshooting
Although the wireless controller is used for the wall type indoor unit with the built-in receiver part, you can check the alarm
code by connecting the PC-P2HTE.
N O T E
• The unit does not operate by pressing the operation switch.
• The above function is available only when the alarm occurs.
• The PCB check using the remote control switch is not available.
• The indication is the data when you are connecting PC-P2HTE. The indication is not the data before the alarm occurs.

Contents of the check mode 1
The next indication is shown if you press the part "
the previous indication is shown.
Temperature indication
Indoor unit temperature setting
1
(°C)
Indoor unit air inlet temperature at
2
thermistor (°C)
Indoor unit discharge air
3
temperature at thermistor (°C)
Indoor unit heat exchanger liquid
4
pipe temperature (°C)
5 Temperature at remote sensor (°C)
Outdoor unit ambient temperature
6
(°C)
Indoor unit heat exchanger gas
7
pipe temperature (°C)
Outdoor unit evaporating
8
temperature during heating (°C)
9 Control information
Discharge gas temperature at the
10 top of the compressor chamber
(°C)
Thermo temperature of the
11
remote control switch
278
SMGB0087 rev.0 - 12/2013
Suction grille

" of the TEMP switch. If you press the part "
Indication of the category code
Indication of the temperature, etc
b1 22
b2 20
Normal
b3 55
Abnormal
b4 20
b5 25
b6 10
b7 25
b8 02
During the transient periods such as starting time and other, the
bg --
indicators "
This is indicated only when a remote sensor is connected.
The indicator "
bA 41
RPK series cannot connect a remote sensor.
Therefore, the indicator is "
This indicates the internal information for the remote control switch.
bb 23
This does not have any specific meaning.
(Ex.) During the operaton of several compressors, the average
temperature of two compressors is indicated.
If the temperature is higher than 126 ºC, "
Connector
for check

... Temperature displayed
(Thermistor is open-
--
circuited or PCB is defec-
tive)
or
(Temperature for top of
12g
compressor)
(Thermistor is short-

circuited or PCB is defec-
tive)
or
255
or
(Temperature for top of
127
compressor)
Refer to section
"Self-checking proce-
dure of PCB by means of the Remote
Control Switch"
-- " or " 00 " may be displayed for a limited time.
-- " is normally displayed.
-- ".
126
" of the TEMP switch,
"