TEST RUN
OUTDOOR UNIT
CAUTION
Always turn on the power 6 hours prior to the start of the
operation in order to protect the compressor.
1. Check items before performing the test run
Make sure to perform the test run.
Before performing the test run, be sure to check the
following points.
(1)
Is gas leaking?
Check connection of each pipe (flare connection part,
brazing part).
(2)
Is a breaker installed to the power cable of the outdoor unit ?
(3)
Has each cable been securely connected to the terminal
according to the specifications ?
(4)
Are the 3-way valves (gas pipes and liquid pipes) of the
outdoor units open?
(5)
Has the power been supplied to the unit for at least 6 hours ?
(6)
Has the necessary local setting been done ?
(7)
Check insulation resistance of 1 M or more using a
500V mega tester.
If no problems are found with the above items, perform the
test run according to “Test run method”.
If any problems are found, immediately resolve the
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problem and re-check the items.
2. Test run method
CAUTION
If the test run is performed for 1 outdoor unit in a group
control system installation, the test run will also be
performed for the other units. Therefore, make sure that
all of the units have been installed before starting a test
run.
(Group control system installation described in “SPECIAL
INSTALLATION METHODS” in the installation manual of
the indoor unit.)
Operate [ENTER] (TEST RUN) switch on the display
board by the following procedure.
LED display
[Controller PCB Assy of control unit]
part
Operation mode
Upper : HEAT
Lower : COOL
[ ENTER ] ( TEST RUN ) switch
2.1. Operating procedures for the test run
(1) Check the 3-way valves (both at the liquid side and gas
side) are opened.
(2) Set the operation mode to “COOL” or “HEAT”.
POWER
MODE
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE
PEAK CUT
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
In the first test run, be sure to set the operation mode to
“COOL”.
Sign “ ” lights on.
The operation mode cannot be switched between “COOL”
and “HEAT” during the test run. To switch the operation
mode between “COOL” and “HEAT”, stop the test run,
switch the operation mode, and then start the test run
again.
(3) Press [ENTER] (TEST RUN) switch for more than
3 seconds.
POWER
MODE
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE
PEAK CUT
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
“TEST RUN” LED will light on.
If the compressor is operating at starting the test run, the
compressor will stop and, after a while, the test run will
start.
Either of the above "LOW NOISE" or "PEAK CUT" will light
on during the test run if local setting function is selected.
(4)
Confirm operating status.
(5)
Press [ENTER] (TEST RUN) switch again.
POWER
MODE
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE
PEAK CUT
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
“TEST RUN” LED lights off, and TEST RUN stops.
Test run will finish after about 60 minutes automatically.
At the same time, “TEST RUN” LED will light off.
Test run may be stopped before operating for
60 minutes if an error occurs after a starting test run.