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ESIE17-08
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Part 4. Maintenance
4.1. Indoor unit
15/11/18
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Version 1.1
Page 101
R32 Sky-Air RZAG-M
Part 4. Maintenance
This part contains the following chapters:
4.1. Indoor unit
4.1.1. General maintenance indoor unit
1. Optimal operation conditions
2. Correlation of air-conditioner's operation status, pressure and running current
* 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.
Indoor unit ..........................................................................................................................................................................................101
Outdoor unit........................................................................................................................................................................................102
Cooling
Heating
Differential between suction temperature
and discharge temperature
8~18°C
14~30°C
DB
27°C
20°C
WB
19°C
Not applicable
COOLING
Low pressure
High pressure
Running current
Dirty air filter
Lower
Lower
Lower
Short circuit of air inlet/outlet
Lower
Lower
Lower
Air mixed in refrigerant
Higher
Higher
Higher
Water mixed in refrigerant
Lower*
Lower
Lower
Dirt mixed in refrigerant
Lower**
Lower
Lower
Refrigerant shortage (gas)
Lower
Lower
Lower
Unsatisfactory compression
Higher***
Lower
Lower