20
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Troubleshooting
Installer and user reference guide
107
BS4~12A14AJV1B
VRV 5 branch selector unit
4P695527-1 – 2022.02
20 Troubleshooting
CAUTION
See
"3 Specific installer safety instructions"
10] to make sure troubleshooting
complies with all safety regulations.
20.1 Solving problems based on error codes
If the BS unit runs into a problem, the user interface of the indoor unit(s)
connected to the BS 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
20.1.1 Prerequisites: Troubleshooting
1
Carry out a thorough visual inspection of the unit and look for obvious defects
such as loose connections or defective wiring.
20.1.2 Error codes: Overview
In case other error codes appear, contact your dealer.
Code
Description
The R32 sensor has detected a refrigerant leak in the BS unit.
/
Safety system error (leak detection)
BS unit drain water abnormality (X15A is opened)
BS unit R32 sensor malfunction
Less than 6 months before the BS unit R32 sensor end of lifetime
BS unit R32 sensor end of lifetime
Malfunction of the BS unit's PCB
BS unit damper malfunction
Malfunction of the BS unit's electronic expansion valve
Malfunction of the BS unit's back-up/capacitor PCB
No power from the BS unit's back-up/capacitor PCB
BS unit power supply failure
Содержание VRV 5 BS4A14AJV1B
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