Daikin RTSQ20PY1 Service Manual page 156

Test Operation
6. Close the front panel in order to let it not be the cause of misjudgement.
7. Check the test operation results by the LED display on the outdoor unit.
8. When the test operation is fully completed, normal operation will be possible after 5 minutes.
Correcting after abnormal completion of the check operation
The test operation is only completed if there is no malfunction code displayed on the remote
controller. In case of a displayed malfunction code, perform the following actions to correct the
abnormality:
1.4.2 Confirm the Malfunction Code on the Remote Controller
Installation error
The stop valve of an outdoor
unit is left closed.
The phases of the power to the
outdoor unit is reversed.
No power is supplied to an
outdoor or indoor unit
(including phase interruption).
Incorrect interconnections
between units.
Refrigerant overcharge.
Insufficient refrigerant.
The added amount of
refrigerant was not inputted
after automatic charging.
In case the test operation was
interrupted or the unit was
operating out of the instructed
temperature range, the initial
refrigerant detection has failed.
145
The test operation is automatically carried out in cooling mode, the H2P LED will light up
and the messages "Test operation" and "Under centralized control" will display on the
remote controller.
It may take 10 minutes to bring the state of the refrigerant uniform before the compressor
starts.
During the test operation, the refrigerant running sound or the magnetic sound of a
solenoid valve may become loud and the LED display may change, but these are not
malfunctions.
During the test operation, it is not possible to stop the unit operation from a remote
controller. To abort the operation, press the BS3 RETURN button. The unit will stop after
±30 seconds.
H1P H2P H3P H4P H5P H6P H7P
h h k h h h h
Normal completion
h k k h h h h
Abnormal completion
Otherwise, refer to "Correcting after abnormal completion of the check operation" on
page 145 to take actions for correcting the abnormality.
After correcting the abnormality, press the BS3 RETURN button and reset the malfunction
code.
Carry out the test operation again and confirm that the abnormality is properly corrected.
Error code Remedial action
E3 E4 F3
Open the stop valve.
F6 UF
U1
Exchange two of the three phases (L1, L2, L3) to
make a positive phase connection.
LC
Check if the power wiring for the outdoor units are
U1 connected correctly.
U4
UF
Check if the refrigerant line piping and the unit wiring
are consistent with each other.
E3
Recalculate the required amount of refrigerant from
F6 the piping length and correct the refrigerant charge
level by recovering any excessive refrigerant with a
UF
refrigerant recovery machine.
E4
Check if the additional refrigerant charge has been
finished correctly.
F3
Recalculate the required amount of refrigerant from
the piping length and add an adequate amount of
refrigerant.
PF
Availability of the leak detection function feature
requires input of the additional refrigerant charge
amount immediately after finishing the automatic
charging. Refer to "1.3.4 Procedure for Inputting the
Additional Refrigerant Charge Weight into the PCB"
on page 141.
U3
In case the test operation was interrupted, perform the
test operation again.
In case the unit was operating out of the instructed
temperature range, the unit can still be operated
normally, but the leak detection function will not be
available. Perform the test operation again within the
instructed temperature range.
SiBE31-801_C
Test Operation