Daikin VRV IV+ RXYTQ8U7YF User Manual

17 | Piping installation
Installer and user reference guide
89
RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P561157-1B – 2021.11
17.4.7 Error codes when charging refrigerant
Code Cause Solution
Unusual low pressure on
suction line
Close valve A immediately. Push
BS3 to reset. Check following
items before retrying
autocharge procedure:
▪ Check if the gas side stop
valve is opened correctly.
▪ Check if the valve of the
refrigerant cylinder is
opened.
▪ Check if the air inlet and
outlet of the indoor unit are
not obstructed.
Freeze-up prevention indoor
unit
Close valve A immediately. Push
BS3 to reset. Retry autocharge
procedure.
Indoor unit is out of
temperature range for leak
detection operation
Retry when ambient conditions
are satisfied.
Outdoor unit is out of
temperature range for leak
detection operation
Retry when ambient conditions
are satisfied.
Indicates an indoor unit which
is not compatible with leak
detection functionality is
installed (e.g., RADX indoor
unit, Hydrobox, …)
Refer to requirements to be
able to execute leak detection
operation.
Other
malfunction
code
— Close valve A immediately.
Confirm the malfunction code
and take corresponding action,
"23.1Solving problems based
on error codes"[4127].
17.4.8 Checks after charging refrigerant
▪ Are all stop valves open?
▪ Is the amount of refrigerant, that has been added, recorded on the refrigerant
charge label?
NOTICE
Make sure to open all stop valves after (pre-) charging the refrigerant.
Operating with the stop valves closed will damage the compressor.

Daikin VRV IV+ RXYTQ8U7YF Specifications

General

Brand	Daikin
Model	VRV IV+ RXYTQ8U7YF
Category	Heat Pump
Language	English