9 | Maintenance and service
Installer reference guide
61
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1B – 2020.05
9 Maintenance and service
NOTICE
Maintenance MUST be done by an authorized 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
2
equivalent.
Formula to calculate the quantity in CO
2
equivalent tonnes: GWP value of the
refrigerant × total refrigerant charge [in kg] / 1000
9.1 Overview: Maintenance and service
This chapter contains information about:
▪ Maintenance safety precautions
▪ The yearly maintenance of the outdoor unit
9.2 Maintenance safety precautions
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
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.
9.3 Checklist for yearly maintenance of the outdoor unit
Check the following at least once a year:
▪ Heat exchanger
The heat exchanger of the outdoor unit can get blocked up due to dust, dirt,
leaves, etc. It is recommended to clean the heat exchanger yearly. A blocked
heat exchanger can lead to too low pressure or too high pressure leading to
worse performance.
9.4 About the compressor
When servicing the compressor keep in mind following precautions:
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