About The Refrigerant Leakage Sensor - Daikin FXMA50A5VEB Installer And User Manual

10.5.1 About the refrigerant leakage sensor

FXMA-A
VRV system air conditioner
4P680920-1 – 2022.01
WARNING
▪
The refrigerant inside the unit is mildly flammable, but normally does NOT leak. If
the refrigerant leaks in the room and comes in contact with fire from a burner, a
heater, or a cooker, this may result in fire, or the formation of a harmful gas.
▪
Turn OFF any combustible heating devices, ventilate the room, and contact the
dealer where you purchased the unit.
▪
Do NOT use the unit until a service person confirms that the part from which the
refrigerant leaked has been repaired.
WARNING
The R32 refrigerant leakage sensor must be replaced after every detection or at the
end of its lifetime. ONLY authorised persons may replace the sensor.
NOTICE
Functionality of the safety measures are periodically automatically checked. In case
of malfunction, an error code will be displayed on the user interface.
NOTICE
The R32 refrigerant leakage sensor is a semiconductor detector which may
incorrectly detect substances other than R32 refrigerant. Avoid using chemical
substances (e.g. organic solvents, hair spray, paint) in high concentrations, in the
close proximity of the indoor unit because this may cause misdetection of the R32
refrigerant leakage sensor.
INFORMATION
The sensor has a lifetime of 10 years. The user interface displays error "CH-05"
6 months before the end of the sensor lifetime and error "CH-02" after the end of
the sensor lifetime. For more information, refer to the reference guide of the user
interface and contact your dealer.
In case of detection when the unit is in standby
When the detection occurs when the unit is in standby, a "false detection check"
will occur.
False detection check
1 The unit starts fan operation on the lowest setting.
2 The user interface displays error "A0-13", emits an alarm sound and the status
indicator blinks.
3 The sensor checks if a refrigerant leakage or misdetection occurred.
▪ No refrigerant leakage detected. Result: The system resumes normal operation
after approximately 2 minutes.
▪ Refrigerant leakage detected. Result:
1 The user interface displays error "A0-11", emits an alarm sound and the status
indicator blinks.
2 Contact your dealer immediately. For more information, see the installation
manual of the outdoor unit.
10 Maintenance and service
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Installer and user reference guide
35