Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 87

Maintenance Inspections
Correlation of Air- What happens in comparison to normal values is summarized in the table below.
(Measured from 15 ~ 20 minutes or more after operation starts.)
Conditioner's
Operation Status
and Pressure /
When Cooling
Running Current
Air-Conditioner Status
Air Filter Fouling
Short Circuit of Indoor Unit Inlet/
Outlet Air
Outdoor Unit Fin Fouling
Short Circuit of Outdoor Unit Inlet/
Outlet Air
Air Mixed in Refrigerant
Water Mixed in Refrigerant
Dirt Mixed in Refrigerant
Lack of Refrigerant (Gas)
Unsatisfactory Compression
When Heating
Air-Conditioner Status
Air Filter Fouling
Short Circuit of Indoor Unit Inlet/
Outlet Air
Outdoor Unit Fin Fouling
Short Circuit of Outdoor Unit Inlet/
Outlet Air
Air Mixed in Refrigerant
Water Mixed in Refrigerant
Dirt Mixed in Refrigerant
Lack of Refrigerant (Gas)
Unsatisfactory Compression
Notes: 1.
2.
3.
76
∗
1. Water in the refrigerant freezes inside the capillary tube or expansion valve, and is
basically the same phenomenon as pump down.
∗
2. Dirt in the refrigerant clogs filters inside the piping, and is basically the same
phenomenon as pump down.
∗
3.Pressure differential between high and low pressure becomes slight.
Low Pressure High Pressure
Lower Lower
Lower Lower
Higher Higher
Higher Higher
Higher Higher
∗1 Lower
Lower
∗2 Lower
Lower
Lower Lower
∗3 Higher
Lower
Low Pressure High Pressure
Higher Higher
Higher Higher
Lower Lower
Lower Lower
Higher Higher
∗1 Lower
Lower
∗2 Lower
Lower
Lower Lower
∗3 Higher
Lower
SiBE26-701
Running Current
Lower
Lower
Higher
Higher
Higher
Lower
Lower
Lower
Lower
Running Current
Higher
Higher
Lower
Lower
Higher
Lower
Lower
Lower
Lower
Troubleshooting