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Troubleshooting
Installer and user reference guide
146
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1 – 2020.01
Main
code
Cause
Solution
SVEO
(a)
SVS
(b)
/
Safety system error (leak detection)
(c)
An error related to the safety system
occurred.
Refer to the service manual for more
information.
R32 sensor malfunction in one of the
indoor units
(c)
Check connection on PCB or actuator.
The system will continue operation, but
indoor unit in scope will stop operating.
Refer to the service manual for more
information.
R32 sensor end of lifetime in one of
the indoor units
(c)
One of the sensors is at the end of lifetime
and must be replaced.
Refer to the service manual for more
information.
▪
The stop valve of an outdoor unit is
left closed.
▪
Refrigerant overcharge
▪
Open the stop valve on both the gas and
liquid side.
▪
Recalculate the required amount of
refrigerant from the piping length and
correct the refrigerant charge level by
recovering any excessive refrigerant with a
refrigerant recovery machine.
▪
The stop valve of an outdoor unit is
left closed.
▪
Insufficient refrigerant
▪
Open the stop valve on both the gas and
liquid side.
▪
Check if the additional refrigerant charge
has been finished correctly. Recalculate the
required amount of refrigerant from the
piping length and add an adequate amount
of refrigerant.
Electronic expansion valve malfunction
(Y1E) - A1P (X21A)
(Y3E) - A1P (X23A)
Check connection on PCB or actuator.
▪
The stop valve of an outdoor unit is
left closed.
▪
Insufficient refrigerant
▪
Open the stop valve on both the gas and
liquid side.
▪
Check if the additional refrigerant charge
has been finished correctly. Recalculate the
required amount of refrigerant from the
piping length and add an adequate amount
of refrigerant.
Refrigerant overcharge
Recalculate the required amount of
refrigerant from the piping length and
correct the refrigerant charge level by
recovering any excessive refrigerant with a
refrigerant recovery machine.
Ambient temperature sensor
malfunction (R1T) - A1P (X18A)
Check connection on PCB or actuator.
Summary of Contents for VRV 5-S Series
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