Acson AMSD-A Series User Manual

Generally, there are two kinds of common problems, i.e. starting failure and insufficient cooling. “Starting failure” is
caused by electrical defect while “insufficient cooling” is caused by improper application or defects in refrigerant circuit.
DIAGNOSIS OF STARTING FAILURE
Preliminary causes :-
- Voltage not within +/- 10% or
rated
- Temperature setting improper
- Wiring disconnected
DIAGNOSIS OF INSUFFICIENT COOLING
Starting failure
Outdoor unit does not
operate at all
Check power source
Check fuse and circuit
breaker and power
cord
Transformer
defective
Check indoor unit
PCB defective
Check compressor or
fan motor
Ÿ Loose connection
Ÿ Capacitor defective
Ÿ Compressor or fan
motor defective
Check input
signal from
indoor to
outdoor unit
Check
secondary
side of power
transformer
PCB controller
in outdoor unit
functioning
Yes
No
No
Yes
OK
No
Insufficient cooling
Insufficient cooling
Excessive heat source
e.g. electric kettle
Room over-crowed
with people
Insufficient cooling
Windows/doors wide
open
Refrigerant circuit
Leakage or insufficient
charge
Restriction at strainer,
capillary, etc.
Air circulation
Indoor/outdoor coil
dirty (clogged)
Air filter dirty
Fan malfunction
Obstruction at air inlet/
outlet of indoor/
outdoor unit
Compressor
Less or no
compression (low
running current)
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Acson AMSD-A Series Specifications

General

Brand	Acson
Model	AMSD-A Series
Category	Air Conditioner
Language	English