Heat Pump 60Hz (RXYQ5~54P)
SiEN34-705
304
Installation Manual
(3) Check the LED display on the outdoor unit PC-board (A1P) is as shown in the table below
and transmission is normal.
LED display:
3
...OFF,
4
...ON,
5
...Blinking
(*)How to distinguish the master unit, sub unit 1, and sub unit 2 in the multi system.
Method 1: By the H8P (MULTI) LED display
Method 2: By the transmission wiring to indoor unit
(4) Make the onsite settings as needed using the push button (BS1-BS5) on the outdoor unit
PC-board (A1P) with the power on. (See “2-12-2 Onsite Settings With the Power On”)
(5) Perform the check operation following the Check Operation Method of the [Service
Precautions] label on the EL. COMPO. BOX lid. The system operation for about 40 minutes
and automatically stops the check operation.
If the malfunction code is not displayed in the remote control after the system stop, check
operation is completed. Normal operation will be possible after 5 minutes. If the malfunction
code is displayed in the remote control, correct the malfunction following [remote control
displays malfunction code] and perform the check operation again.
[remote control displays malfunction code]
If any malfunction codes other than the above are displayed, check the service manual for how
to respond.
LED display
(Default status of
shipped)
SERV.
MONIT
OR
MODE TEST/
HWL
C/H SELECTOR
L.N.O.P DEMA-ND MULTI
IND MASTER SLAVE
HAP
H1P
H2P
H3P
H4P
H5P
H6P
H7P
H8P
Single system
5
3
3
4
3
3
3
3
3
Multi
system
(*)
Master unit
5
3
3
4
3
3
3
3
4
Sub unit 1
5
3
3
3
3
3
3
3
5
Sub unit 2
5
3
3
3
3
3
3
3
3
4
(ON): Master unit
5
(Blinking): Sub unit 1
3
(OFF): Sub unit 2
Transmission wiring is connected: Master unit
Transmission wiring is not connected : Sub unit 1 or Sub unit 2
Malfunction
code
Installation error
Remedial action
E3, E4
F3, F6
UF
The shutoff valve of the outdoor unit
is left closed.
Open the shutoff valve.
U1
The phases of the power to the
outdoor unit is reversed.
Exchange two of the three phases (L1, L2, L3) to
make a proper connection.
U1
U4
LC
No power is supplied to an outdoor or
indoor unit (including phase
interruption).
Make sure the power source wire is properly
connected to the outdoor unit and revise if
necessary.
UF
There is conflict on the connection of
transmission wiring in the system.
Check if the refrigerant piping line and the
transmission wiring are consistent with each other.
E3
F6
UF
Refrigerant overcharge.
Recalculate the additional amount refrigerant from
the piping length and correct the refrigerant charge
level by recovering any excessive refrigerant with
a refrigerant recovery machine.
E4
F3
Insufficient refrigerant.
!
Check if the additional refrigerant charge has
been finished correctly.
!
Recalculate the additional amount
refrigerant from the piping length and add the
adequate amount.
U7, U4
UF, UH
If the outdoor unit terminal is
connected when there is one outdoor
unit installed.
Remove the line from the outdoor multi terminals
(Q1 and Q2).
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