Fujitsu AOYG45LAT8 User Manual page 51

Case3 : Error at construction
After performing the below-described work, repairs, inspections etc., always carry out the Check operation. Normal
operation will not be possible without performing the Check operation.
1. Things to comfirm before starting the Check operation
To ensure safety, check that the following work, inspections and operations have been completed.
1 Check that all work on the piping connecting the outdoor unit , indoor units and branch box
has been completed
2 Check that all work on the wiring connecting the outdoor unit, indoor units and branch box
has been completed
3 Is there a gas leakge? (At pipe connections flang connections and brazed areas )
4 Is the system changed with the specifed volume of refrigerant?
5 Is a breaker installed at the power supply cable of outdoor unit and every branch boxes?
6 Are the wires connected to the terminals without looseness, and in accorodance with the specifications?
7 Is the 3-way valve of the outdoor unit open?(Gas pipe and liquid pipe)
8 Is power supplied to the crank case heater for more than 12 hours?
9 Has the power supply of the all indoor units turned off?(Remote controller)
2. Restrictions applicable when performing the Check operation
• When the Check run starts, all indoor units connected to the outdoor unit will start to run automatically. During
the Check run, you cannot check the operation of the indoor units separately. After the Check run, check the
operation of the indoor units separately in normal operation.
• The operable temperature ranges for the Check run are: external temperature -15 to 46ºC; room
temperature for cooling 18 to 46ºC; room temperature for heating -15 to 37ºC.
• In the check run, the conditioner will automatically switch between cooling and heating depending on the
external temperature and internal temperature.
If the external temperature or internal temperature is outside the above operable temperature range, wait until
the temperature is within the operable range and then perform the Check run.
• The Check run can be completed within 1 hour, but may take several hours depending on the external and
internal temperature conditions etc.
• Please do not conduct the Check run with all the windows in the room closed. Otherwise the room temperature
could get too low or too high.
• Depending on the difference of the room temperature of each room, a judgment may be impossible.
3. Operating procedure for Check run
(1)
Turn power on to the outdoor unit, indoor units and branch boxes.
After the displayed number of "8888." has been turned off, press
the "CHECK" button.(approximately 2 minutes)
(2) Press and hold the "CHECK" button for
more than 3 seconds.
(3) The number of connected branch boxes and indoor units will be
displayed on the 7 seg. display. Check that the displayed number
matches the actual number of connected units. Do not perform the
Check run if the displayed number of units is in error. If the Check run
was performed with the number of units in error, check the state of the
units and then perform the Check run again.
1 If the displayed number of units matches the installed number,
go to (4)
2 If the displayed number does not match the installed number,
check the following.
• Are all the Branch boxes tumed on?
Branch boxes are turned on, and go to (4).
• Are connection cables connected to all of the indoor units?
Turn of the power, connect the
Connection cable and go to (1).
(4)
Press and hold the "CHECK" button again for
more than 3 seconds.
• The Check run will start.
In the Check run, the following items will be checked.
1 The wiring and piping between the indoor units and the Branch box
2 Valve opening
• To make an enforced stop, press the "MODE/EXIT" button.
You cannot execute the stop operation using the remote control.
• To prevent electric shock, close the service panel during the
Check run.
(5) The Check run will stop automatically after allitems are completed.
When an error occurs, consult the following error display items.
Correct the error, and carry out the Check run again.
* When the error display disappear even the measures for error
are taken, switch on the power again after turning off the
power. When the power is turned on again after turned off,
wait approx. 10 minutes and turn on the power again.
{
Check that the
02-03
}
(
POWER
ERROR
MODE
(LED982)
7 seg.display
(LED981)
CHECK
(Press and hold for more
than 3 seconds.)
[Example of 7 seg. display]
(Press and hold for more
CHECK
than 3 seconds.)
(currently
operating)
(operation has finished
normally (without error))
(Press the MODE/EXIT button.
MODE/EXIT
"END" has been turned off.)
: On, : Blinking, : Off)
Number of
indoor units
Number of
branch boxes
Ex) Mode:Heat
8 Indoor units
H:Heat
C:Cool