21 | Troubleshooting
Installer and user reference guide
118
SV1A25AJV1B+SV4~8A14AJV1B
VRV 5 safety valve unit
4P749917-1 – 2023.09
21 Troubleshooting
CAUTION
See "3 Specific installer safety instructions" [4 13] to make sure troubleshooting
complies with all safety regulations.
21.1 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
21.1.1 Prerequisites: Troubleshooting
1 Carry out a thorough visual inspection of the unit and look for obvious defects
such as loose connections or defective wiring.
21.1.2 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
Malfunction of the SV unit's electronic expansion valve
SV unit power supply failure
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