Specifications

RXYQQ8~20T7Y1B
VRV IV System Air Conditioner
4P345099-1 – 2013.04
Installation and operation manual
59
11.3. Shortening of "maintenance cycle" and
"replacement cycle" needs to be considered in
following situations
The unit is used in locations where:
 Heat and humidity fluctuate out of the ordinary.
 Power fluctuation is high (voltage, frequency, wave distortion,
etc.) (the unit cannot be used if power fluctuation is outside the
allowable range).
 Bumps and vibrations are frequent.
 Dust, salt, harmful gas or oil mist such as sulphurous acid and
hydrogen sulfide may be present in the air.
 The machine is started and stopped frequently or operation time
is long (sites with 24 hour air-conditioning).
Recommended replacement cycle of wear parts
Table 2: "Replacement Cycle" list
Moving and discarding the unit
 Contact your dealer for removing and reinstalling the total unit.
Moving units requires technical expertise.
 This unit uses hydrofluorocarbon. Contact your dealer when
discarding this unit. It is required by law to collect, transport and
discard the refrigerant in accordance with the
"hydrofluorocarbon collection and destruction" regulations.
11.4. Malfunction codes
In case a malfunction code appears on the indoor unit user interface
display, contact your installer and inform the malfunction code, the
unit type, and serial number (you can find this information on the
nameplate of the unit).
For your reference, a list with malfunction codes is provided. You can,
depending on the level of the malfunction code, reset the code by
pushing the ON/OFF button. If not, ask your installer for advice.
NOTICE
1 Tab le 1 indicates main components. Refer to your
maintenance and inspection contract for more details.
2 Tab le 1 indicates recommended intervals of
maintenance cycles. However, in order to keep the
unit operational as long as possible, maintenance
work may be required sooner. Recommended
intervals can be used for appropriate maintenance
design in terms of budgeting maintenance and
inspection fees. Depending on the content of the
maintenance and inspection contract, inspection and
maintenance cycles may in reality be shorter than
listed.
Component
Inspection
cycle
Maintenance cycle
(replacements and/or
repairs)
Air filter
1 year
5 years
High efficiency filter 1 year
Fuse 10 years
Crankcase heater 8 years
NOTICE
 Table 2: "Replacement Cycle" list indicates main
components. Refer to your maintenance and
inspection contract for more details.
 Table 2: "Replacement Cycle" list indicates
recommended intervals of replacement cycles.
However, in order to keep the unit operational as long
as possible, maintenance work may be required
sooner. Recommended intervals can be used for
appropriate maintenance design in terms of budgeting
maintenance and inspection fees. Contact your dealer
for details.
INFORMATION
Damage due to taking apart or cleaning interiors of units by
anyone other than our authorised dealers may not be
included in the warranty.
Malfunction
code
ContentsMain code
A0 External protection device was activated
A1 EEPROM failure (indoor)
A3 Drain system malfunction (indoor)
A6 Fan motor malfunction (indoor)
A7 Swing flap motor malfunction (indoor)
A9 Expansion valve malfunction (indoor)
AF Drain malfunction (indoor unit)
AH Filter dust chamber malfunction (indoor)
AJ Capacity setting malfunction (indoor)
C1 Transmission malfunction between main PCB and sub PCB
(indoor)
C4 Heat exchanger thermistor malfunction (indoor; liquid)
C5 Heat exchanger thermistor malfunction (indoor; gas)
C9 Suction air thermistor malfunction (indoor)
CA Discharge air thermistor malfunction (indoor)
CE Movement detector or floor temperature sensor malfunction
(indoor)
CJ User interface thermistor malfunction (indoor)
E1 PCB malfunction (outdoor)
E2 Current leakage detector was activated (outdoor)
E3 High pressure switch was activated
E4 Low pressure malfunction (outdoor)
E5 Compressor lock detection (outdoor)
E7 Fan motor malfunction (outdoor)
E9 Electronic expansion valve malfunction (outdoor)
F3 Discharge temperature malfunction (outdoor)
F4 Abnormal suction temperature (outdoor)
F6 Refrigerant overcharge detection
H3 High pressure switch malfunction
H4 Low pressure switch malfunction
H7 Fan motor trouble (outdoor)
H9 Ambient temperature sensor malfunction (outdoor)
J1 Pressure sensor malfunction
J2 Current sensor malfunction
J3 Discharge temperature sensor malfunction (outdoor)
J4 Heat exchanger gas temperature sensor malfunction
(outdoor)
J5 Suction temperature sensor malfunction (outdoor)
J6 De-icing temperature sensor malfunction (outdoor)
J7 Liquid temperature sensor (after subcool HE) malfunction
(outdoor)
J8 Liquid temperature sensor (coil) malfunction (outdoor)
J9 Gas temperature sensor (after subcool HE) malfunction
(outdoor)
JA High pressure sensor malfunction (S1NPH)
JC Low pressure sensor malfunction (S1NPL)
L1 INV PCB abnormal
L4 Fin temperature abnormal
L5 Inverter PCB faulty
L8 Compressor over current detected
L9 Compressor lock (startup)