Troubleshooting - Airwell EDS25 Service Manual

13.

TROUBLESHOOTING

NO SYMPTON
1.
The stand-by
indicator (red led)
on the central
control display
panel doesn't light
up.
2. The operation
indicator (green
led) on the central
control display
panel does not
light up.
3. The operation
indicator (green
led) does not light
up when starting
from unit.
4.
The indoor fan
does not function
correctly.
5. The outdoor fan
does not function
correctly.
6. The compressor
does not start up.
7. The refrigeration
system does not
function correctly.
Service Manual - EDS
PROBABLE CAUSE
There is no correct voltage
between the line and neutral
terminals on main P.C.B
The remote control batteries
are discharged
Check main P.C.B and display
P.C.B
Check the voltage between
indoor fan terminals on the
main P.C.B
Check the voltage between out
door fan terminals on the main
P.C.B
There is voltage between
outdoor fan terminals on the
outdoor unit.
There is no voltage between
outdoor fan terminals on the
outdoor unit.
Check voltage on compressor
terminals on the outdoor unit.
(with ammeter)
Check if there is correct voltage
between compressor terminals
on the outdoor unit.
Check for leaks or restrictions.
With ammeter. Pressure gauge
or surface thermometer.
Revision
TROUBLESHOOTING
CORRECTIVE ACTION
-If the voltage is low repair power
supply.
-If there is no voltage repair
general wiring.
-If there is correct voltage replace
main or display P.C.B'S
-Replace batteries of the remote
control.
-Replace P.C.B if necessary.
-If there is voltage replace
capacitor or motor.
-If there is no voltage replace main
P.C.B
-Replace capacitor or motor.
-Check and repair electrical wiring
between indoor and outdoor units.
-If no voltage replace main P.C.B
-If low voltage repair power supply.
-If the voltage correct replace
capacitor or compressor.
-If there is no voltage repair
electrical wiring between indoor
and outdoor units.
-Repair refrigeration system and
charge refrigerant if necessary.
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