Preparing For Test Run - Technibel CAV250R5TA Série Manuel D'installation

12. TEST RUN

12-1. Preparing for Test Run

• Before attempting to start the air conditioner, check the
following:
(1) All loose matter is removed from the cabinet especially
steel filings, bits of wire, and clips.
(2) The control wiring is correctly connected and all
EG electrical connections are tight.
(3) The protective spacer for the compressor used for
transportation has been removed. If not, remove them
now.
(4) The transportation pads for the indoor fan have been
removed. If not, remove them now.
(5) Both the wide and narrow tube service valves are open.
If not, open them now.
• Test run procedure
❏ The purpose of the test run function is to let you control the operation of the unit directly without the thermostat turning the unit
on or off. As indicated in the following procedure, be sure to switch out of TEST RUN when you are finished, or the air conditioner
can be damaged because it won't cycle on and off normally.
❏ To protect the air conditioner from overloading, the outdoor unit will not start running for 3 minutes after power is applied or the
unit is turned OFF.
Press the TEST / CHK button at the bottom right on the
a
remote controller.
Press the ON / OFF operation button to start the test
b
run.
Press the MODE button to select either COOL or HEAT
c
mode.
When the test run has started, "TEST" shows on the
d
remote controller's display.
During the test run, the air conditioner runs continuously
e
and the thermostat does not control the system.
After the test run, be sure to press the TEST / CHK
f
button once again to cancel this mode and be sure
"TEST" is not shown on the display.
CAUTION
12-2. PCB Setting
• Setting of outdoor control PCB
(A) Standard control (single outdoor unit)
In case of single outdoor unit installation, no setting necessary. Keep factory shipment state (R.C. address is set in "0").
In this case, auto. address operation takes place automatically for the first time when the power is switched on. This takes
about a few minutes.
(B) Group control (Multiple outdoor units)
In case of group control (up to 8 indoor units can be connected with one remote controller), before turning the power supply
on set the R.C. address with S2, on the outdoor control PCB.
R.C. address: Refrigerant circuit address 1 ~ 8.
Regarding the example of R.C. addess for group control, please refer to sec. 12-3 page 46.
(C) Central control (when using the system controller)
In case of central control
(a) Before turning the power supply on, set the R.C. addresses with S2, S3 on the outdoor control PCB.
(b) Remove the short plug (CN4, 2P Black) from all outdoor units except one.
Regarding the example of R.C. address for central control and the position of CN4, please refer to page 27 and sec. 12-3.
• The TEST RUN button
is used only for servi-
cing the air conditio-
ner. Do not press this
button for normal ope-
ration, or the system
may be damaged.
AIR FLOW
UNIT
FLAP
TIMER SET
CL.
SET
Alarm message
ON/OFF operation
button
45
Narrow tube service
valve (3-way valve)
Fully OPEN
MODE
SET TEMP.
FAN SPEED
TEST
TEST / CHK
TEST RUN/CHECK button