119
Satisfactory operation with temperature difference of air intake & discharge of indoor unit
14°C to 20°C. *
( * value is for reference only )
Clean The Coil
Insufficient Heating
Air Circulation
High Heating Load
Refrigerant Circuit
Compressor
Restricted
..................................................
Clean The Filter
Change Or Repair The Motor
................................................
...........................
Remove The Obstruction
................................
Clode The Windows/Doors
.............................
Add Refrigerant. Repair
Leakage if detected
....................................
Repair Clogging Or Replace
Faulty Components
...........................
Repair Compressor
.........................................
Indoor/Outdoor Coil Dirty
(Clogged)
Indoor Air Filter Dirty
Fan Motor Malfunction
Windows/Doors Wide Open
Refrigerant Short Charge
Or Rerigerant Leaking
Restriction e.g. At Strainer,
Capillary, Filter Dryer, etc.
Less Or No Compression
(Low Running Current)
Obstruction At Air Inlet/Outlet
Of Indoor/Outdoor Unit
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