Outdoor Unit; General Maintenance Outdoor Unit - Daikin 2MXM50M Service Manual

ESIE16-02B | Part 4. Maintenance

4.2. Outdoor unit

4.2.1. General maintenance outdoor unit

1. Outdoor unit coil
- Straighten hair fins.
- Clear coil from dust, leaves, etc. with a fin-comb, or compressed air/N2. Avoid bending or damaging of the Alu fins during
the cleaning process.
C
AUTION
Make sure not to bend the hair fins.
2. Correlation of air-conditioner's operation status, pressure and running current.
COOLING
Dirty air filter
Short circuit of air inlet/outlet
Air mixed in refrigerant
Water mixed in refrigerant
Dirt mixed in refrigerant
Refrigerant shortage (gas)
* Water in the refrigerant freezes inside the electronic expansion valve and is basically the same phenomenon as pump down.
** Dirt in the refrigerant clogs filters inside the piping and is basically the same phenomenon as pump down.
*** Pressure differential between high and low pressure becomes low.
Page 90
RA R32 Split & multi split M-Series
Low pressure
Higher
Higher
Higher
Lower*
Lower**
Lower***
High pressure
Higher
Higher
Higher
Lower
Lower
Lower
4.2. Outdoor unit
Running current
Higher
Higher
Higher
Lower
Lower
Lower
4/04/17 | Version 1.1