Installation manual
16
ERX125~250A7W1B
Inverter condensing unit
4PW30064-1D
Setting the mode
The set mode can be changed with the
button according
to the following procedure:
■
For setting mode 1: Press the
button once, the
H1P LED is off
x
.
■
For setting mode 2: Press the
button for
5 seconds, the H1P LED is on
w
.
If the H1P LED is blinking
c
and the
button is pushed
once, the setting mode will change to setting mode 1.
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
(A~C). The LED indication that matches the required function is
shown below in the field marked
:
2
When the
button is pushed, the current setting is
defined.
3
Push the
button according to the required setting
possibility as shown below in the field marked
.
3.1 Possible settings for function A, B, and C are
(ON) or
(OFF).
4
Push the
button and the setting is defined.
5
When the
button is pushed again, the operation
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
12.4. Test operation
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.
3
Make the field setting as needed using the push buttons on the
PCB (A1P) of the outdoor unit. Refer to
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
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
"Correcting after abnormal completion
of the test operation" on page 17
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 17
NOTE
If you get confused in the middle of the setting
process, push the
button. Then it returns to
setting mode 1 (H1P LED is off).
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
A
w x w x w x
x
B
w x w x w x w
C
w x w x
x w x
H1P
H2P
H3P
H4P
H5P
H6P
H7P
w x
x
x
x c x
(a)
(a) This setting = factory setting
w x
x
x
x
x c
H1P
H2P
H3P
H4P
H5P
H6P
H7P
x
x w x
x
x
x
BS1 MODE
BS1 MODE
BS1 MODE
BS1 MODE
BS1 MODE
BS2 SET
BS3 RETURN
BS2 SET
ON
OFF
ON
OFF
BS3 RETURN
BS3 RETURN
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.
Make sure that the fan of the air handling unit is
operating before starting the test operation.
