Service manual

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Start and finish of test run [For outdoor controller board]

• Operation from the indoor unit

Execute the test run using the installation manual for the indoor unit.

• Operation from the outdoor unit

By using the DIP switch SW4 on the control board of outdoor unit, test run can be started and finished, and its operation

mode (cooling/heating) can be set up.

1Set the operation mode (cooling/heating) using SW4-2.

2Turn on SW4-1 to start test run with the operation mode set by SW4-2.

3Turn off SW4-1 to finish the test run.

• There may be a faint knocking sound around the machine room after power is supplied,

but this is no problem with product because the linear expansion pipe is just moving to

adjust opening pulse.

• There may be a knocking sound around the machine room for several seconds after com-

pressor starts operating. But this is not a problem with product because the check valve

itself generates the sound because pressure difference is small in the refrigerant circuit.

Note:

The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1,

change the operation mode and restart the test run by SW4-1.)

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

RESET

SET

CLOCK

TEST

RUN

COOL









,

Test run [for IR wireless remote controller]

Measure an impedance between the power supply terminal block on

the outdoor unit and ground with a 500V Megger and check that it is

equal to or greater than 1.0M".

1 Turn on the main power to the unit.

2 Press the

TEST RUN

button twice continuously.

(Start this operation from the turned off status of remote controller

display.)

TEST RUN

and current operation mode are displayed.

3 Press the

MODE

( ) button to activate

COOL

mode, then

check whether cool air is blown out from the unit.

4 Press the

MODE

( ) button to activate

HEAT

mode, then

check whether warm air is blown out from the unit.

5 Press the

FAN

button and check whether strong air is blown out

from the unit.

6 Press the

VANE

button and check whether the auto vane operates

properly.

7 Press the ON/OFF button to stop the test run.

Note:

• Point the remote controller towards the indoor unit receiver

while following steps 2 to 7.

• It is not possible to run in FAN, DRY or AUTO mode.

OFF

1 2

<SW4>

 

 

 Stop  Operation

 Cooling  Heating