Fujitsu AOTG34JFTC, Service Manual

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Before the test run, refer to he figure and
check the following items.
Is the outdoor unit securely installed?
Have you performed gas leakage inspection?
(Connection joints of various pipes (flang 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 specif cations?
Is the earth wire connected accurately?
Are there any obstacles blocking the suction gate, and outlet of
the indoor/outdoor units?
Have you filled the specified 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?
If there are problems, adjust immediately and recheck.
Be sure to configure test run settings only when the outdoor unit has stopped
operating.
Test run setting method (it can be performed in the following two ways)
Set with test run setting (refer to installation instructions manual of indoor unit
for further details) available in the remote control.
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 first test run with cooling operation.)
Set as per the procedure given below.
Depending on the communication status between the indoor and outdoor units,
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 suff cient
length of time before restarting the operation.
Setting method
OUTDOOR UNIT
TEST RUN
Turn on the power of the outdoor unit and enter standby mode.
(1)
POWER
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
MODE (L1) (L2) (L3) (L4) (L5) (L6)
Press the ENTER button for more than 3 seconds. (2)
POWER
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
MODE (L1) (L2) (L3) (L4) (L5) (L6)
Blink Blink
Press the SELECT button,
LED of the test run mode Switched between "COOL" and "HEAT".
(3)
Cooling test mode
POWER
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
MODE (L1) (L2) (L3) (L4) (L5) (L6)
Blink
Blink
Heating test mode
POWER
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
MODE (L1) (L2) (L3) (L4) (L5) (L6)
Blink Blink
After confirmin the operation mode, Press ENTER button.
(4)
The display changes as follows, and Air conditioner starts operation.
Cooling test mode
POWER
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
MODE (L1) (L2) (L3) (L4) (L5) (L6)
Blink
Heating test mode
POWER
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
MODE (L1) (L2) (L3) (L4) (L5) (L6)
Blink Off Off On Off Off Off Off
Off Off Off On Off Off Off
Off Off Off Off Off Off
Off Off Off Off Off Off
Off Off Off Off Off Off
Off On Off Off Off Off Off Off
Off On Off Off Off Off Off Off
Press [ENTER] button. (5)
Air conditioner stopped operation.
POWER
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
MODE (L1) (L2) (L3) (L4) (L5) (L6)
Check items during test run
Test run method
Is the outdoor unit making any abnormal noise or vibrating signif 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 12.2. described later.
Operate the unit according to the operating manual provided with the indoor
unit, and check that it is operating normally.
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