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■ HW Type
10-9. Caution
●
This unit may be used in a single-type refrigerant
system where 1 outdoor unit is connected to 1 indoor
unit, and also in a system where 1 outdoor unit is
connected to multiple indoor units (maximum 4).
* If multiple indoor units are used, also refer to "10-16.
System Control".
●
The indoor and outdoor unit control PCB utilizes
a semiconductor memory element (EEPROM). The
settings required for operation were made at the time of
shipment.
Only the correct combinations of indoor and outdoor
units can be used.
Big_PAC_eng.indb 51
Big_PAC_eng.indb 51
10-10. Test Run Procedure
Recheck the items to check
before the test run.
Check the combination (wiring) of
indoor and outdoor units.
YES
Is system "single-type"?
(1 indoor unit is connected
to 1 outdoor unit)
Turn ON the
Are multiple outdoor units
indoor and
used?
outdoor power
(Automatic
Address setting)
Turn ON the indoor and
outdoor power.
(Automatic Address Setting)
Set the indoor unit control
switch to "TEST".
Can operation be
started?
Slide the indoor unit control
switch back to "ON".
10-11. Items to Check Before the Test Run
(1) Turn the remote power switch ON at least 12 hours in
advance in order to energize the crank case heater.
(2) Fully open the closed valves on the liquid-tube and gas-
tube sides.
51
(See 10-11)
(See 10-16)
NO
YES
(See 10-16-2)
In case of group
control
Confirm wiring
NO
is done in
accordance with
Fig. 2, "Basic
Wiring".
(See 10-16-3 to
10-16-6)
How to Set
Automatic Address
Set the
automatic
address setting
from outside unit.
(See 10-13)
(See 10-15)
Refer to "Table of
NO
Self-Diagnostic
Functions" to check
the system.
In addition, refer to
10-16 and correct
any items that need
to be corrected.
YES
Note: Check the indoor-
side drainage.
(See 10-13)
Fig. 10-8
2009/08/26 16:33:21
2009/08/26 16:33:21
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