Test Operation - Daikin ERX125A7W1B Installation Manual

Setting the mode
The set mode can be changed with the
to the following procedure:
For setting mode 1: Press the
x
H1P LED is off .
For setting mode 2: Press the
5 seconds, the H1P LED is on
c
If the H1P LED is blinking
once, the setting mode will change to setting mode 1.
NOTE If you get confused in the middle of the setting
process, push the
setting mode 1 (H1P LED is off).
Mode 1
This mode is not used for adjusting settings, it is only used for
confirmation of the set mode. The H1P LED is off.
Setting mode 2
The H1P LED is on.
Setting procedure
1 Push the button according to the required function
BS2 SET
(A~C). The LED indication that matches the required function is
shown below in the field marked
Possible functions
A additional refrigerant charging operation.
B refrigerant recovery operation/vacuuming operation.
C setting of high static pressure.
H1P H2P H3P H4P H5P H6P H7P
w x w x w x x
A
w x w x w x w
B
w x w x x w x
C
2 When the
BS3 RETURN
defined.
3 Push the button according to the required setting
BS2 SET
possibility as shown below in the field marked
3.1 Possible settings for function A, B, and C are
(OFF).
H1P H2P H3P H4P H5P H6P H7P
w x x x x c x
ON
(a)
w x x x x x c
OFF
(a) This setting = factory setting
4 Push the button and the setting is defined.
BS3 RETURN
5 When the
BS3 RETURN
starts according to the setting.
Refer to the service manual for more details and for other settings.
Confirmation of the set mode
The following item can be confirmed by setting mode 1 (H1P
LED is off)
Check the LED indication in the field marked
Indication of the present operation state
x
- , normal
w
- , abnormal
c
- , under preparation or under test operation
H1P H2P H3P H4P H5P H6P H7P
x x w x x x x
Installation manual
16
button according
BS1 MODE
button once, the
BS1 MODE
button for
BS1 MODE
w
.
and the button is pushed
BS1 MODE
button. Then it returns to
BS1 MODE
:
button is pushed, the current setting is
.
(ON) or
ON
button is pushed again, the operation
.

12.4. Test operation

Do not insert fingers, rods or other objects into the air
inlet or outlet. When the fan is rotating at high speed, it
will cause injury.
Do not perform the test operation while working on the
units.
When performing the test operation, not only the outdoor
unit, but the connected units will operate as well. Working
on a unit while performing a test operation is dangerous.
In case refrigerant was added in cooling mode
In the check operation, the following checks and judgement will
be performed:
Check of the stop valve opening
Check for wrong wiring
Judgement of piping length
It takes ±30 minutes to complete the check operation.
Check operation procedure
1 Close the electric box lid and all front panels except the one on
the side of the electric box.
2 Turn on the power to the outdoor unit. Turn the power on on all
connected control boxes and air handling units. Be sure to turn
the power ON at least 6 hours before operation in order to have
power running to the crank case heater.
Make sure that the fan of the air handling unit is
operating before starting the test operation.
3 Make the field setting as needed using the push buttons on the
PCB (A1P) of the outdoor unit. Refer to
page 15.
4 Set the check operation (without initial refrigerant decision)
following setting mode 2 in the field setting and perform the
check operation.
The system operates for ±30 minutes and automatically stops
the check operation.
If no malfunction code is displayed on the remote controller
after the system has stopped, check if the operation is
OFF
completed. Normal operation will be possible after 5 minutes.
If a malfunction code is displayed on the remote controller,
correct the malfunction and perform the check operation
again as described in
of the test operation" on page
In case refrigerant was added at standstill
In the check operation, the following checks and judgement will
be performed:
Check of the stop valve opening
Check for wrong wiring
Check of refrigerant overcharge
Judgement of piping length
It takes ±40 minutes to complete the check operation.
Perform the test operation as described in the paragraph
operation procedure" on page
"Field setting" on
"Correcting after abnormal completion
17.
17.
ERX125~250A7W1B
Inverter condensing unit
4PW30064-1D
"Test