Troubleshooting - Electra DELTA 18ST Service Manual

13.

TROUBLESHOOTING

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.
8 No cooling or heating
only indoor fan
works.
SM DELTA 1-E.0 GB
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.
Outdoor fan motor faulty or other
fault caused, compressor overload
protection cut out.
CONTENTS
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.
-Replace P.C.B.
-Outdoor fan blocked remove
obstructions.
13-1