Hitachi PC-ARF Technical Catalogue page 164

4 Individual remote controls
PC-ART
Content of check mode 1
By pressing "" consecutively, the following indications will be displayed.
Step
No.
1 Indoor unit temperature setting (°C).
2 Indoor unit air inlet temperature (°C).
3 Indoor unit discharge air temperature (°C).
4 Indoor unit heat exchanger liquid piping temperature (°C).
Remote sensor temperature (°C).
- This is only displayed when connected to a remote sensor.
5
The display normally shows "--".
The RPK series cannot connect to a remote sensor. The indication is therefore "--".
6 Outdoor unit ambient temperature (°C).
7 Indoor unit heat exchanger refrigerant gas piping temperature (°C).
8 Outdoor unit evaporating temperature during heating (°C).
Control information.
9
- Displays internal remote control information.
For the SET-FREE unit, this indication shows the number of compressors running.
Discharge gas refrigerant temperature in top of compressor chamber (°C).
10 - (Example) When several compressors are running, the average temperature of 2 compressors is given.
- If the temperature exceeds 126°C, the indication will read "126".
11 Remote control thermostat temperature.
N O T E
Possible abnormal conditions
TEMPERATURE INDICATION
--
129
FF 255
or
127
During transitory periods, such as on start-up, the "--" or "00" indicator may appear for a limited time.
148
TCGB0106 rev.0 - 12/2014
Temperature indication
Open circuit on any thermistor except
Open circuit in compressor discharge thermistor
Short-circuit in any thermistor except
Short-circuit in compressor discharge thermistor
Indication of temperature, etc.
Category code indication
FAULT
129
Check that the PCB is not
reading the thermistor incor-
rectly.
Consult the "PCB self-
127
checking procedure using
the remote control" section
b1 22
b2 20
b3 55
b4 20
b5 25
b6 10
b7 25
b8 02
b9 --
bA 41
bb 23