Test running18
Remote control switch
indication
Unit condition Wrong portions
Inspection points after power source
OFF
The operation lamp
ickers. (1 time/1 sec.)
and the unit number and
alarm code 03 icker.
The unit does not start.
The power source of
outdoor unit in not turned
ON.
The connecting wires of
operating line are inco-
rrect or loosened.
1 Connecting order of each terminal
boards.
2 Screw fastening of each terminal
boards.
NOTE
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
The operation lamp ic-
kers. (1 time/2 sec.)
The unit does not start.
Remote control cable is
broken.
Contact of connectors is
not good.
The connection of remote
control cable is incorrect
This is the same as item 1 and 2
Indication of icker ex-
cept above
The unit does not start, or start once and
then stops
The connection of
thermistor or other con-
nectors are incorrect.
Tripping of protector
exists, or else.
Check by the abnormality mode table in
the Technical Catalogue (Do it by servi-
ce people).
The operation lamp
ickers. (1 Time/1s)
Unit number , alarm
code and unit code
icker
The unit does not start.
The connection of the
remote control cable
between indoor units is
incorrect.
Check by the abnormality mode table in
the Technical Catalog (Do it by service
people).
Back to after checking
Instructions for the recovery when the fuse of the transmission circuit is blown out:
1 Correct the wiring to the terminal board.
2 Set pin 2 of DSW7 on the indoor units PCB to ON
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
DSW301
Switch for setting of service operation and function
Factory
setting
1 Test Run
2 COOL/HEAT
(Setting ON: Heat Operation)
3 OFF (Fixed)
4 Manual Compressor stop
5 OFF (Fixed)
6 OFF (Fixed)
CAUTION
• 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.
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