18 Hand-over to the user
Installation and operation manual
44
SV1ASV4~8A14AJV1B
VRV 5 safety valve unit
4P709466-1 – 2023.09
18
Hand-over to the user
Once the test run is finished and the unit operates properly, make
sure the following is clear for the user:
▪ Make sure that the user has the printed documentation and ask
him/her to keep it for future reference. Inform the user that he can
find the complete documentation at the URL mentioned earlier in
this manual.
▪ Explain the user how to properly operate the system and what to
do in case of problems.
▪ Explain to the user only a certified installer is allowed to perform
maintenance on the unit.
19
Maintenance and service
19.1
Before the maintenance and
service of the SV unit
Before starting the maintenance and service, field setting must be
applied on the VRV 5 heat pump outdoor unit. For more information,
see the installation and operation manual of the outdoor unit.
If field setting is applied, the shut-off valves of the SV unit will close.
The compressor, outdoor fan and indoor unit will stop operating and
the 7-segment display will show code "
".
To confirm the full closure of the shut-off valves, "
" will be shown
on the 7-segment display of the outdoor unit.
The system power supply must be turned off for maintenance.
19.2
SV unit maintenance and service
label
WARNING
Never power off the unit for maintenance and service
before the shut-off valves are closed.
2
1
4
3P736525-1
3
2'
b
a
d
c
f
e
a
Caution for maintenance and servicing of SV unit
b
Consult the installation manual or service manual
c
Apply the field setting on the outdoor unit
d
Wait for two minutes to allow the system to close the
valves
e
Turn off the system power
f
Perform maintenance and servicing on the SV unit
20
Troubleshooting
CAUTION
See
"2 Specific installer safety instructions"
4] to make
sure troubleshooting complies with all safety regulations.
20.1
Overview: Troubleshooting
Before troubleshooting
Carry out a thorough visual inspection of the unit and look for
obvious defects such as loose connections or defective wiring.
20.2
Precautions when troubleshooting
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
WARNING
▪ When carrying out an inspection on the switch box of
the unit, ALWAYS make sure that the unit is
disconnected from the mains. Turn off the respective
circuit breaker.
▪ When a safety device was activated, stop the unit and
find out why the safety device was activated before
resetting it. NEVER shunt safety devices or change
their values to a value other than the factory default
setting. If you are unable to find the cause of the
problem, call your dealer.
WARNING
Prevent hazards due to inadvertent resetting of the thermal
cut-out: power to this appliance MUST NOT be supplied
through an external switching device, such as a timer, or
connected to a circuit that is regularly turned ON and OFF
by the utility.
20.3
Solving problems based on error
codes
If the SV unit runs into a problem, the user interface of the indoor
unit(s) connected to the SV unit displays an error code. It is
important to understand the problem and to take measures before
resetting an error code. This should be done by a licensed installer
or by your local dealer.
This chapter gives you an overview of the most frequent error codes
and their descriptions as they appear on the user interface.
INFORMATION
See the service manual for:
▪ The complete list of error codes
▪ A more detailed troubleshooting guideline for each
error
20.3.1
Error codes: Overview
In case other error codes appear, contact your dealer.
Code
Description
The R32 sensor has detected a refrigerant leak in the
SV unit.
/
Safety system error (leak detection)
SV unit drain water abnormality (X15A is opened)
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
Malfunction of the SV unit's PCB
SV unit damper malfunction
Summary of Contents for VRV 5
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