Insufficient Heating - Acson ART 55 A Technical Manual

Insufficient heating

Restricted
Air
circulation
High heating
load
Refrigerant
circuit
Compressor
Satisfactory operation with temperature difference of air
intake & discharge of indoor unit 14°C to 20°C. *
( * value is for reference only )
Indoor / outdoor coil dirty
(clogged)
Indoor air filter dirty
Fan motor malfunction
Obstruction at air inlet /
outlet of indoor / outdoor
unit
Windows / doors wide
open
Refrigerant short charge
or refrigerant leakage
Restriction e.g. at
strainer, capillary, filter
dryer, etc.
Less or no compression
(Low running current)
177
Change or repair the motor
Remove the obstruction
Close the windows / doors
Add refrigerant. Repair leakage if detected
Repair clogging or replace faulty components
Replace compressor
Clean the coil
Clean the filter