44
10. TEST RUN
10-1. 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 electrical
connections are tight.
(3) The protective spacers for the compressor used for
transportation have been removed. If not, remove them
now.
(4) The transportation pads for the indoor fan have been
removed. If not, remove them now.
(5) The power has been supplied to the unit for at least 5
hours before starting the compressor. The bottom of
the compressor should be warm to the touch and the
crankcase heater around the feet of the compressor should
be hot to the touch.
(Fig. 10-1)
(Power must be turned ON at least
5 hours before attempting test run)
Power mains switch
ON
Fig. 10-1
(6) Both the gas and liquid tube service valves are open. If
not, open them now. (Fig. 10-2)
Liquid tube
Gas tube
Fig. 10-2
(7) Request that the customer be present for the test run.
Explain the contents of the instruction manual, and then
have the customer actually operate the system.
(8) Be sure to give the instruction manual and warranty
certificate to the customer.
(9) When replacing the control PCB, be sure to make all the
same settings on the new PCB as were in use before
replacement.
The existing EEPROM is not changed, and is connected to
the new control PCB.
■
4WK, C, D Types
10-2. 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 “10-8. 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.
●
This test run section describes primarily the procedure
when using the wired remote controller.
10-3. Test Run Procedure
YES
YES
YES
NO
NO
NO
Recheck the items to check
before the test run.
Check the combination (wiring) of
indoor and outdoor units.
(See 10-8-1 to 5)
(See 10-4)
Is system “single-type”?
(1 indoor unit is connected
to 1 outdoor unit and remote
controller)
Is group control with
multiple outdoor units used?
Turn ON the indoor and
outdoor power.
Indicate (mark) the
combination number.
(See 10-8-5)
Automatic
address
Set the remote controller to
“test run”.
(See 10-5)
Can
operation be
started?
Return the remote controller
to normal control.
Turn ON the
indoor and
outdoor power.
(Automatic
Address)
(See 10-8-3)
Setting the Outdoor
Unit System
Address
Set the outdoor
unit system
address.
(See 10-8-4)
Automatic Address
Setting
Use the remote
controller to
perform automatic
address setting.
Refer to “Table of Self-
Diagnostic Functions”
to check the system.
In addition, refer to 10-
8-1 to 5 and correct
any items that need to
be corrected.
Note: Check the indoor-side
drainage.
(*1) Required for
simultaneous-operation
multi systems and for
group control.
(*1)
Fig. 10-3
Airwell̲PAC-i̲eng.indb 44
Airwell̲PAC-i̲eng.indb 44
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2009/07/09 16:13:34
Summary of Contents for OU-PSINV-25HR
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