Electra DELTA 18ST - Troubleshooting Guide; Common Symptoms and Corrective Actions

13-1
TROUBLESHOOTING
SM DELTA 1-E.0 GB
13. TROUBLESHOOTING
 SYMPTON PROBABLE CAUSE CORRECTIVE ACTION
1. The stand-by
indicator (red led) on
the central control
display panel doesn’t
light up.
There is no correct voltage between
the line and neutral terminals on
main P.C.B
-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
2. The operation
indicator (green led)
on the central control
display panel does
not light up.
The remote control batteries are
discharged
-Replace batteries of the remote
control.
3. The operation
indicator (green led)
does not light up
when starting from
unit.
Check main P.C.B and display
P.C.B
-Replace P.C.B if necessary.
4. The indoor fan does
not function correctly.
Check the voltage between indoor
fan terminals on the main P.C.B
-If there is voltage replace capacitor or
motor.
5. The outdoor fan does
not function correctly.
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.
-If there is no voltage replace main
P.C.B
-Replace capacitor or motor.
-Check and repair electrical wiring
between indoor and outdoor units
6. The compressor does
not start up.
Check voltage on compressor
terminals on the outdoor unit. (with
ammeter)
Check if there is correct voltage
between compressor terminals on
the outdoor unit.
-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.
7. The refrigeration
system does not
function correctly.
Check for leaks or restrictions.
With ammeter. Pressure gauge or
surface thermometer.
-Repair refrigeration system and charge
refrigerant if necessary.
8 No cooling or heating
only indoor fan
works.
Outdoor fan motor faulty or other
fault caused, compressor overload
protection cut out.
-Replace P.C.B.
-Outdoor fan blocked remove
obstructions.