Hitachi RAS-2HVNP Installations- Und Betriebshandbuch Seite 38

18
1 Test running
Remote control switch
indication
The operation lamp
flickers. (1 time/1 sec.)
and the unit number and
alarm code 03 flicker.

The operation lamp flic-
kers. (1 time/2 sec.)
Indication of flicker ex-
cept above
The operation lamp
flickers. (1 Time/1s)
Unit number  , alarm
code  and unit code
 flicker
Back to  after checking
Instructions for the recovery when the fuse of the transmission circuit is blown out:

Correct the wiring to the terminal board.
1
Set pin 2 of DSW7 on the indoor units PCB to ON
2
18.2 TEST RUN PROCEDURE FROM OUTDOOR UNIT SIDE
The procedure of test run from outdoor unit side is indicated below. Setting of this DIP switch is available with the power source ON.
Setting of Dip switch
Switch for setting of service operation and function
1 Test Run
2 COOL/HEAT
(Setting ON: Heat Operation)
3 OFF (Fixed)
4 Manual Compressor stop
Factory
5 OFF (Fixed)
setting
6 OFF (Fixed)
38
Unit condition
The unit does not start.
The unit does not start.
The unit does not start, or start once and
then stops
The unit does not start.
DSW301
PMML0248A
Wrong portions
The power source of
outdoor unit in not turned
ON.
The connecting wires of
operating line are inco-
rrect or loosened.
Remote control cable is
broken.
Contact of connectors is
not good.
The connection of remote
control cable is incorrect
The connection of
thermistor or other con-
nectors are incorrect.
Tripping of protector
exists, or else.
The connection of the
remote control cable
between indoor units is
incorrect.
C A U T I O N
• Do not touch any other electrical parts when operating swit-
ches on the PCB.
• Do not attach or detach service cover when the power source
for the outdoor unit is ON and the outdoor unit is operated.
Turn all DIP switches of DSW301 OFF when the test run ope-
•
ration is completed.
Inspection points after power source
OFF
Connecting order of each terminal
1
boards.
Screw fastening of each terminal
2
boards.
N O T E
Recovering method of FUSE for opera-
ting circuit. There is a fuse (FUSE4 on
indoor unit PCB1, EF1 on outdoor unit
PCB1) to protect operating circuit on the
PCB, when the power lines are connec-
ted to operating lines. If fuse is melted,
operating circuit can be recovered once
by setting the dip switch on the PCB as

shown in
This is the same as item  1 and 2
Check by the abnormality mode table in
the Technical Catalogue (Do it by servi-
ce people).
Check by the abnormality mode table in
the Technical Catalog (Do it by service
people).