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12. TEST RUN
12.1. Pre-test run check items
Before the test operation, refer to the fi gure and check the following items.
Is the outdoor unit securely installed?
Have you performed gas leakage inspection?
(Connection joints of various pipes ( fl ange connection, brazing))
Is the heat insulation done completely?
(Gas pipe, liquid pipe, drain hose extension on indoor unit side etc)
Is the water discharging from drain without any problems?
Are the cables connected correctly?
Are the cables as per speci fi cations?
Is the earth wire connected accurately?
Are there any obstacles blocking the suction gate, and outlet of the indoor/outdoor units?
Have you fi lled the speci fi ed amount of refrigerant?
Are the stop valves of gas pipe and liquid pipe fully open?
Has the power been supplied to crankcase heater for more than 6 hours?
After checking that the above items are all in order, refer to “12.2. Test operation method” to test operation the unit. If there are problems, adjust immediately and recheck.
12.2. Test operation method
Be sure to con fi gure test run settings only when the outdoor unit has stopped operating.
it may take several minutes for the system to start operating after settings for the test run are complete.
• After the test run settings are complete, the outdoor units and the connected indoor units will start operating. Room temperature control will not activate during test operation (continuous operation).
• If a knocking sound can be heard in the liquid compression of the compressor, stop the unit immediately and then energize the crank case heater for a suf fi cient length of time before restarting the operation.
Test operation setting method (It can be performed in the following two ways)
• Set with test operation setting (refer to installation instructions manual of indoor unit for further details) available in the remote controller.
• “Cooling Operation” and “Heating Operation” can be set using [SELECT] button and
[ENTER] button available on the board of display unit.
(*Make sure to perform the fi rst test operation with cooling operation.)
Set as per the procedure given below.
LED display part
/
SW107 SW108 SW109 SW112 SW110
Button part
12.2.1. Setting method on outdoor unit board
“POWER/MODE” Lamp lights up.
PUMP LOW PEAK
POWER
ERROR
DOWN NOISE CUT
MODE
●
Sign “
○
(L1) (L2) (L3) (L4) (L5) (L6)
○ ○ ○ ○ ○ ○
○
”: Lights off, “
●
”: Lights on
(2) Press the [ENTER] button for more than 3 seconds.
PUMP LOW PEAK
POWER
ERROR
DOWN NOISE CUT
MODE (L1)
Blink
Sign “
○
○
”: Lights off, “
●
”: Lights on
(L2) (L3) (L4) (L5) (L6)
○ ○
Blink
○ ○ ○
(3) Press the [SELECT] button, LED of the test run mode Switched between "COOL " and "HEAT".
Cooling test mode
PUMP LOW PEAK
POWER
ERROR
DOWN NOISE CUT
MODE (L1)
Blink
Sign “
○
○
”: Lights off, “
●
”: Lights on
(L2) (L3) (L4) (L5) (L6)
○ ○
Blink
○ ○ ○
Heating test mode
PUMP LOW PEAK
POWER
ERROR
DOWN NOISE CUT
MODE (L1)
Blink
Sign “
○
○
”: Lights off, “
●
”: Lights on
(L2) (L3) (L4) (L5) (L6)
○
Blink
○ ○ ○ ○
(4) After fi rming the operation mode, Press [ENTER] button.
The display changes as follows, and Air conditioner starts operation.
Cooling test mode
PUMP LOW PEAK
POWER
ERROR
DOWN NOISE CUT
MODE (L1)
Blink
Sign “
○
○
”: Lights off, “
●
”: Lights on
(L2) (L3) (L4) (L5) (L6)
○ ○
●
○ ○ ○
Heating test mode
PUMP LOW PEAK
POWER
ERROR
DOWN NOISE CUT
MODE (L1)
Blink
Sign “
○
○
”: Lights off, “
●
”: Lights on
(L2) (L3) (L4) (L5) (L6)
○
●
○ ○ ○ ○
(5) Press [ENTER] button.
Air conditioner stopped operation.
PUMP LOW PEAK
POWER
ERROR
DOWN NOISE CUT
MODE (L1)
●
Sign “
○
○
”: Lights off, “
●
”: Lights on
(L2) (L3) (L4) (L5) (L6)
○ ○ ○ ○ ○ ○
12.3. Checklist
Check items during test operation.
Is the outdoor unit making any abnormal noise or vibrating signi fi cantly?
Is the cold air or hot air blowing from indoor unit according to the operation mode?
Check that the “ERROR” LED blinks.
If, it has displayed, check the error content as per 13.2. described later.
Operate the unit according to the operating manual provided with the indoor unit, and check that it is operating normally.
En-14
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