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Remote controller indications at check operation (for
BRC1A52)
A.Before check operation
Normal Indications
After check operation
*1 Regardless of previous settings, it always indicates for cooling
operation after a check operation.
*2 Indication of "
" may occasionally blinks, light-on, or light-
off, which depends on the setting of cooling/heating switch on the
remote controller.
Please see the instruction manual of indoor unit for the details.
*1
*2
˚C
1 pilot lamp (light-off)
B.Error Codes (defect indications)
(Note) Error codes shown here are examples and only for a reference.
(1) Before check operation
UNIT No.
˚C
(2) During check operation
UNIT No.
TEST
1 2 3 5 6 7 blinking
4 8 pilot lamp (blinking)
Repair the defect part according to the list on [Remote controller dis-
plays malfunction code]
C.Indications at check operation
TEST
1 pilot lamp (light-on)
D.Indications at check operation
(For when re-charging from the refrigerant tank is required. (Com-
pressor is not operated.))
UNIT No.
TEST
1 2 blinking
3 pilot lamp (light-on)
*Error code
Procedures to be taken
indicated at
P8
Connect the refrigerant tank.
The refrigerant tank is empty or the refrigerant tank
valve is not open.
• If the refrigerant tank is empty, replace it, and hold
down the "TEST" button (BS4) for at least 5 sec-
onds to re-start the unit.
PA
• If the refrigerant tank valve is not open, hold down
the "TEST" button (BS4) for at least 5 seconds to
re-start the unit.
After re-starting the unit, follow the instructions in
procedure (3) 2 to open the refrigerant tank valve.
25
All indications are lighted-on.
All other indications are lighted-on.
All other indications are lighted-on.
All other indications are lighted-on.
All other indications are lighted-on.
* These codes appear on the error display, but do not indicate
actual errors.
These codes indicate directions for the refrigerant re-charging
process.
Actual codes displayed depend on the remote control and
optional accessories used. For details, refer to "Remote control-
ler displays malfunction code".
[Remote controller displays malfunction code]
Malfunction
Installation error
code
A*
Indoor unit of connect-
C*
ing remote controller is
(Note)
malfunction.
E3, F4
The shutoff valve of the
F3, UF
outdoor unit is left closed.
The phases of the
U1
power to the outdoor
unit are reversed.
Check operation has
U3
been completed normally.
Power is not being sup-
U1
plied (including cases of
U4
open phase) to the out-
LC
door or BS or indoor unit.
A model which cannot be
connected in a multi-out-
U7
door-unit system has been
UA
connected in a multi-out-
door-unit system.
There is a problem with
another BS and indoor
U9
unit within the same
system.
Wrong wiring between
UF
units.
If an outdoor - outdoor
transmission wire was con-
UF
nected or disconnected
during check operation.
U4, U7
Wrong wiring between
UH, UF
units.
DIP switch (DS1) setting
is incorrect after the out-
PJ
door unit PCB (A1P)
was replaced.
Check operation cannot
P2
be continued by the low
pressure drops.
Instruction to perform addi-
P8
tional refrigerant charging
PA
during check operation
(not a malfunction).
If any malfunction codes other than the above are displayed, check
the service manual for how to respond.
Remedial action
Correct the malfunction by refer-
ence to installation manual of
indoor unit or operation manual
of outdoor unit.
Open the shutoff valve.
Exchange two of the three
phases (L1, L2, L3) and connect
with the correct phase.
Perform the check operation
again.
Supply power correctly to the
outdoor, BS or indoor unit.
Change to individual piping, and
disconnect the wiring from the
multi-outdoor-unit terminals (Q1,
Q2)
A malfunction code is displayed on
the remote controller, or else trou-
ble has occurred at BS and indoor
unit where a malfunction code is
not displayed on the remote con-
troller. Correct the trouble at the
corresponding BS and indoor unit.
If no malfunction code is displayed
on the remote controller, press the
Inspection/Test button on the
remote controller to display the
malfunction code.
Agree refrigerant system and con-
nection wire between the units.
Complete the transmission wiring
work, then perform check opera-
tion again.
Connect the interunit wiring
(indoor - outdoor, outdoor - out-
door, multi-outdoor-unit).
If voltage of 100V or higher was
applied to the outdoor unit PCB
(A1P), the outdoor unit PCB or
BS unit PCB may be damaged. If
the malfunction display "UH"
appears even after the connec-
tion was corrected, the PCB must
be replaced. Refer to Service
Manual for details.
Follow the information on spare
parts with a spare PCB of out-
door unit and make the correct
setting.
Check the following.
• All shutoff valves are open.
• Refrigerant tank is connected.
• Valve of refrigerant tank is open.
• Inlet or outlet of indoor unit are not
closed due to a foreign object.
Make the check operation by "11-
2 Procedure of check opera-
tion".
English
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