Hitachi RPI-0.8FSG1 Service Manual page 26

TROUBLESHOOTING
(1.1.7 Abnormalities of Devices)
Phenomenon
The Comp.
does not Stop
or Start even
if the Setting
temperature
on LCD is
Changed *3)
*1): Refer to Item 1.3.1 to 1.3.4.
*2): Refer to Item 1.2.3.
*3): Even if controllers are normal, the compressor does not operate under the following conditions.
* Indoor Air Temp. is lower than -21°C or Outdoor Air Temp. is lower than -5°C during cooling operation.
* Indoor Air Temp. is higher than 30°C or Outdoor Air Temp. is higher than 23°C during heating operation.
* When a cooling (or heating) operation signal is given to the outdoor unit and a different mode as heating
(or cooling) operation signal is given to indoor units.
* When an emergency stop signal is given to outdoor unit.
1-16
Cause
Incorrect Optional
Setting
Incorrect
Input/Output Setting
Check Item
Check Setting Condition
of "Thermistor of
Remote Control Switch"
by Optional Setting
* Setting and Control
"00": Control by Indoor
Thermistor for
Suction Air
"01": Control by
Thermistor of
Remote Control
Switch
"02": Control by
Average Value of
Indoor Thermistor
for Suction Air
and Thermistor of
Remote Control
Switch
Check Setting Condition
of "i1" and "i2" by
Input/Output Setting
* Setting and Control
"01": Room Thermostat
(Cooling)
"02": Room Thermostat
(Heating)
Action
(Turn OFF Main Switch)
In case that
thermistor of remote
control switch is not
used, set at "00".
In case that room
thermostat is not
used, set for input
signal actually used.
If no signal is used,
set at "00".