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Maintenance Inspection
ESIE15-13C
98
Service Diagnosis
Correlation of Air-Conditioner’s Operation Status and Pressure / Running Current
What happens in comparison to normal values is summarized in the table below.
(Measured for 15 ~ 20 minutes or more after operation starts.)
Cooling
Heating
Note:
*1. Water in the refrigerant freezes inside the capillary tube or electronic 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 low.
Air-Conditioner Status
Low Pressure
High Pressure
Running Current
Air Filter Fouling
Lower
Lower
Lower
Short Circuit of Indoor Unit Inlet/Outlet
Air
Lower
Lower
Lower
Outdoor Unit Fin Fouling
Higher
Higher
Higher
Short Circuit of Outdoor Unit Inlet/Outlet
Air
Higher
Higher
Higher
Air Mixed in Refrigerant
Higher
Higher
Higher
Water Mixed in Refrigerant
Lower *1
Lower
Lower
Dirt Mixed in Refrigerant
Lower *2
Lower
Lower
Refrigerant Shortage
Lower
Lower
Lower
Unsatisfactory Compression
Higher *3
Lower
Lower
Air-Conditioner Status
Low Pressure
High Pressure
Running Current
Air Filter Fouling
Higher
Higher
Higher
Short Circuit of Indoor Unit Inlet/Outlet
Air
Higher
Higher
Higher
Outdoor Unit Fin Fouling
Lower
Lower
Lower
Short Circuit of Outdoor Unit Inlet/Outlet
Air
Lower
Lower
Lower
Air Mixed in Refrigerant
Higher
Higher
Higher
Water Mixed in Refrigerant
Lower *1
Lower
Lower
Dirt Mixed in Refrigerant
Lower *2
Lower
Lower
Refrigerant Shortage
Lower
Lower
Lower
Unsatisfactory Compression
Higher *3
Lower
Lower
Summary of Contents for FHQ100CAVEB
Page 2: ......
Page 6: ...ESIE15 13C iv Table of Contents...
Page 14: ...Introduction ESIE15 13C xii...
Page 18: ...Outlook Outdoor Units ESIE15 13C 4 General Information 2 Outlook Outdoor Units...
Page 22: ...Operating range ESIE15 13C 8 General Information...
Page 108: ...Emergency Operation ESIE15 13C 94 Field Setting...