Maintenance And Service; Overview: Maintenance And Service; Maintenance Safety Precautions; To Prevent Electrical Hazards - Daikin RDXYQ5T8V1B Installer And User Manual

21 Maintenance and service

In this chapter

21.1 Overview: Maintenance and service

21.2 Maintenance safety precautions

21.2.1 To prevent electrical hazards

RKXYQ5T8+8T7Y1B + RDXYQ5T8+8T7V1B
VRV IV heat pump for indoor installation
4P499898-1B – 2021.12
NOTICE
Maintenance MUST be done by an authorised installer or service agent.
We recommend performing maintenance at least once a year. However, applicable
legislation might require shorter maintenance intervals.
NOTICE
Applicable legislation on fluorinated greenhouse gases requires that the refrigerant
charge of the unit is indicated both in weight and CO
Formula to calculate the quantity in CO
refrigerant × total refrigerant charge [in kg] / 1000
21.1 Overview: Maintenance and service...................................................................................................................................... 121
21.2 Maintenance safety precautions............................................................................................................................................ 121
21.2.1 To prevent electrical hazards................................................................................................................................. 121
21.3 Checklist for yearly maintenance of the heat exchanger unit............................................................................................... 122
21.4 About service mode operation............................................................................................................................................... 122
21.4.1 To use vacuum mode ............................................................................................................................................. 122
21.4.2 To recover refrigerant............................................................................................................................................ 123
This chapter contains information about:
▪ Preventing electrical hazards when maintaining and servicing the system
▪ The refrigerant recovery operation
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
NOTICE: Risk of electrostatic discharge
Before performing any maintenance or service work, touch a metal part of the unit in
order to eliminate static electricity and to protect the PCB.
When performing service to inverter equipment:
1 Do NOT open the electrical component box cover for 10 minutes after turning
off the power supply.
21 Maintenance and service
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equivalent.
2
equivalent tonnes: GWP value of the
2
Installer and user reference guide
121