Malfunction Codes - Daikin RYYQ8T7Y1B Installation And Operation Manual

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.
Malfunction
code
Main 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)
RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV System Air Conditioner
4P329765-1 – 2012.09
Contents
Malfunction
code
Main code
LC Transmission outdoor unit - inverter: INV transmission
trouble
P1
INV unbalanced power supply voltage
P2 Autocharge operation related
P4 Fin thermistor malfunction
P8
Autocharge operation related
P9 Autocharge operation related
PE Autocharge operation related
PJ
Capacity setting malfunction (outdoor)
U0
Abnormal low pressure drop, faulty expansion valve
U1 Reversed power supply phase malfunction
U2
INV voltage power shortage
U3
System test run not yet executed
U4 Faulty wiring indoor/outdoor
U5
Abnormal user interface - indoor communication
U7
Faulty wiring to Q1/Q2
U8 Abnormal main-sub user interface communication
U9 System mismatch. Wrong type of indoor units combined.
Indoor unit malfunction.
UA
Connection malfunction over indoor units or type mismatch
UC Centralized address duplication
UE Malfunction in communication centralized control device -
indoor unit
UF
Auto address malfunction (inconsistency)
UH Auto address malfunction (inconsistency)
12. Important information regarding the
refrigerant used
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type: R410A
(1)
GWP value: 1975
(1)
GWP=global warming potential
Periodical inspections for refrigerant leaks may be required
depending on European or local legislation. Please contact your local
dealer for more information.
Contents
Installation and operation manual
62