Error Codes: Overview - Daikin VRV 5-S RXYSA8AMY1B Installation And Operation Manual

Malfunction
If a refrigerant leak ▪ Actions will be taken by the system. Do
occurs (error code NOT turn OFF the power supply.
/ )
▪ Notify
malfunction code.
If the system does ▪ Check if there is no power failure. Wait until
not operate at all. power is restored. If power failure occurs
during operation, the system automatically
restarts
restored.
▪ Check if no fuse has blown or breaker is
activated. Change the fuse or reset the
breaker if necessary.
If the system goes ▪ Check if air inlet or outlet of outdoor or
into fan only indoor unit is not blocked by obstacles.
operation, but as Remove any obstacles and make sure the
soon as it goes into air can flow freely.
heating or cooling
▪ Check if the user interface display shows
operation, the
on the home screen. Refer to the
system stops.
installation and operation manual delivered
with the indoor unit.
The system ▪ Check if air inlet or outlet of outdoor or
operates but cooling indoor unit is not blocked by obstacles.
or heating is Remove any obstacles and make sure the
insufficient. air can flow freely.
▪ Check if the air filter is not clogged (refer to
"Maintenance" in the indoor unit manual).
▪ Check the temperature setting.
▪ Check the fan speed setting on your user
interface.
▪ Check for open doors or windows. Close
doors and windows to prevent wind from
coming in.
▪ Check if there are too many occupants in
the room during cooling operation. Check if
the heat source of the room is excessive.
▪ Check if direct sunlight enters the room.
Use curtains or blinds.
▪ Check if the air flow angle is proper.
After checking all the items above, if it is impossible to fix the
problem yourself, contact your installer and state the symptoms, the
complete model name of the unit (with manufacturing number if
possible) and the installation date.
8.1

Error codes: Overview

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.
Main code
External protection device was activated
The R32 sensor in one of the indoor units has
detected a refrigerant leak
The R32 sensor in one of the SV unit has detected a
refrigerant leak.
/ Safety system error (leak detection)
EEPROM failure (indoor)
Drain system malfunction (indoor/SV unit)
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752781-1B – 2024.02
Measure
your installer and report
immediately after power
Contents
(a)
(a)
Main code
Fan motor malfunction (indoor)
Swing flap motor malfunction (indoor)
the
Expansion valve malfunction (indoor)
Drain malfunction (indoor unit)
Filter dust chamber malfunction (indoor)
Capacity setting malfunction (indoor)
is
Transmission malfunction between main PCB and sub
PCB (indoor)
Heat exchanger thermistor malfunction (indoor; liquid)
Heat exchanger thermistor malfunction (indoor; gas)
Suction air thermistor malfunction (indoor)
Discharge air thermistor malfunction (indoor)
Movement detector or floor temperature sensor
malfunction (indoor)
R32 sensor malfunction in one of the indoor units
R32 sensor end of lifetime in one of the indoor units
R32 sensor end of lifetime<6 months in one of the
indoor units
Waiting for indoor unit R32 sensor replacement input
Waiting for SV unit replacement input
SV unit R32 sensor malfunction
Less than 6 months before the SV unit R32 sensor
end of lifetime
SV unit R32 sensor end of lifetime
User interface thermistor malfunction (indoor)
PCB malfunction (outdoor)
Current leakage detector was activated (outdoor)
High pressure switch was activated
Low pressure malfunction (outdoor)
Compressor lock detection (outdoor)
Fan motor malfunction (outdoor)
Electronic expansion valve malfunction (outdoor)
SV unit damper malfunction
Discharge temperature malfunction (outdoor)
Abnormal suction temperature (outdoor)
High pressure switch malfunction
Fan motor malfunction (outdoor)
Ambient temperature sensor malfunction (outdoor)
Discharge temperature sensor malfunction (outdoor)
Suction temperature sensor malfunction (outdoor)
De-icing temperature sensor malfunction (outdoor) or
heat exchanger gas temperature sensor malfunction
(outdoor)
Liquid temperature sensor (after subcool HE)
malfunction (outdoor)
Liquid temperature sensor (coil) malfunction (outdoor)
Gas temperature sensor (after subcool HE)
malfunction (outdoor)
High pressure sensor malfunction (S1NPH)
Low pressure sensor malfunction (S1NPL)
INV PCB abnormal
Fin temperature abnormal
INV PCB abnormal
Compressor over current detected
Compressor lock (startup)
8 Troubleshooting
Contents
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Installation and operation manual
(a)
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