Check Run Check Items And Procedure - Fujitsu AOU48RLXFZ Design & Technical Manual

6-2.

CHECK RUN CHECK ITEMS AND PROCEDURE

Use the following procedure to perform the Check run.
Check Item
1. Turn on 1.1 Check ▪ The power is on to the outdoor unit,
power communi- connected branch boxes, and indoor units.
cations
▪ Automatically determined after the power is
turned on.
▪ T he determination takes about 2 minutes.
(During this time, the outdoor unit 7 seg.
displays are all lit.)
▪ The determination is pass if all 7 seg. displays
of the outdoor unit turn off.
<All lit state>
1.2 Compressor ▪ The power is on to the outdoor unit,
preheat connected branch boxes, and indoor units.
operation
▪ After the power is turned on, preheating of the
compressor starts automatically. (Conduct
preheating for at least 12 hours.)
▪ Confirm that all the outdoor unit 7 seg.
displays are off. (If there is an indoor unit,
branch box, or outdoor unit error, preheating
of the compressor will not be performed.)
2. Check run 2.1 Check the ▪ Continue pressing the CHECK button for
number of more than 3 seconds to begin checking the
connected number of connected units.
units
▪ After the number of connected units is shown
in the outdoor unit 7 seg. display, check if the
number of installed branch boxes and indoor
units has been detected correctly.
<All off state>
LED961
2.2 Check ▪ Continue pressing the CHECK button for
connected more than 3 seconds to begin operation to
positions check the connected positions.
▪ The determination takes about 1 hour. (During
this time the outdoor unit 7 seg. display will
show "C.rUn".)
▪ The determination is pass when "End" is
displayed on the outdoor unit 7 seg. display.
<During Check run>
Check run has been completed. Please
conduct the test run.
Stopping Check run ▪ When you want to stop Check run before it is completed, press the MODE/EXIT button while "C.rUn" is displayed.
▪ When Check run has been stopped before it is completed, the system is not in a state where it will run normally.
Perform Check run again.
Procedure
<All off state>
LED981 LED982
LED981 LED982
POWER ERROR POWER ERROR
MODE MODE
LED961 LED962 LED961 LED962
<Number of units display>
LED981 LED982 LED981 LED982
POWER ERROR
POWER ERROR
MODE MODE
LED962 LED961 LED962
Number of Number of
Branch boxes Indoor units
<Check run
ends normally>
LED981 LED982
LED981 LED982
POWER ERROR POWER ERROR
MODE MODE
LED961 LED962 LED961 LED962
- (06 - 83) -
When an Error Occurs
When an error occurred
▪ The number of error is automatically displayed.
▪ The error codes can be checked using the ENTER button.
▪ After checking the error code, turn off the power and resolve the problem.
[Ex] When a branch box error and serial signal error occurred (error during
operation).
<Displays the number of error>
Press ENTER
button
LED981 LED982 LED981 LED982
POWER ERROR POWER ERROR
MODE
MODE
LED961 LED962 LED961 LED962
[Caution]
If the power has been off for more than 6 hours, preheat the compressor for
at least 12 hours before conducting the Check run.
When an error occurred
▪ The number of error is automatically displayed.
▪ The error codes can be checked using the ENTER button.
▪ After checking the error code, turn off the power and resolve the problem.
▪ Turn the power on again.
If the number of displayed units does not match the number of
installed units
If the number of units displayed by the outdoor unit indicators does not
match the number of installed branch boxes and indoor units, recheck the
wiring work and perform the Check run again.
Wiring Mistake Case 1 Wiring Mistake Case 2
Connection destination does not Problem with the wiring or piping
match connection
LED981 LED982
POWER ERROR
MODE
LED961 LED962
[Display Explanation]
[Display Explanation]
The wire connected to Terminal A
Recheck how the wiring and piping
of Branch box1 (left 2-digit) must be
are installed.
rewired to Terminal B of Branch box
(The number of wires and pipes does
3 (right 2-digit).
not match.)
[Caution]
The displayed wiring mistake
positions are displayed by the
indicators in order. Make a note of
all of them before turning off the
power and rewiring.
State in which automatic determination cannot be conducted
LED981 LED982
POWER ERROR
MODE
LED961 LED962
This shows the state in which automatic determination of whether there
are error positions during operation for the 2.2 Check connected positions
cannot be conducted.
In this case, press the MODE/EXIT button to end the Check run.
Since automatic determination is not possible, visually inspect the wiring
and piping and then conduct the test run.
<Displays error code>
The error code switches each time
the SELECT button is pressed.
LED981 LED982 LED981 LED982
POWER ERROR
POWER ERROR
MODE MODE
LED961 LED962 LED961 LED962
LED981 LED982
LED981 LED982
POWER ERROR
POWER ERROR
MODE
MODE
or
LED961 LED962
LED961 LED962
is displayed
6. SYSTEM DESIGN