Troubleshooting - Electra PXD912 Service Manual

12.

TROUBLESHOOTING

No. SYMPTOM
1 Power supply indicator
(Red LED) does not light
up.
2 Unit does not respond to
remote control command.
3 Unit responds to remote
control command but
operate indicator (Green
LED) does not light up.
4 Indoor fan does not start
(louvers are opened and
Green LED lights up).
5 Indoor fan works when
unit is OFF, and indoor fan
speed is not changed by
remote control command.
6 Compressor does not
start.
7 Compressor stops during
operation and Green LED
remains on.
8 Compressor is ON but
outdoor fan does not work.
9 Unit works in wrong mode
(cool instead of heat or
heat instead of cool).
10 All components are
operating properly but no
cooling or heating.
SM PXD 1-E.3 GB
PROBABLE CAUSE
No power supply.
Remote control
command did not reach
the indoor unit.
Problem with display
PCB.
Unit in HEAT MODE and
coil is still not warm.
Problem with PCB or
capacitor.
PCB problem.
Electronics control
problem or protection.
Electronic control or
power supply problem.
Problem with outdoor
electronics or outdoor fan
capacitor.
Electronics or power
connection to RV.
Refrigerant leak.
CONTENT
TROUBLESHOOTING
CORRECTIVE ACTION
Check power supply. If power
supply is OK, check display
and display wiring, if OK,
replace PCB.
Check remote control
batteries. If batteries are OK,
check display and display
wiring, if OK, replace PCB.
Replace display PCB.
Change to COOL MODE and
check.
Change to HIGH speed and
check power supply to motor is
higher than 130 VAC. If OK
replace capacitor, if not OK
replace controller.
Replace controller.
Perform diagnostics, and
follow the actions described
below.
Perform diagnostics, and
follow the actions described
below.
Switch unit to COOL mode,
HIGH speed with 16 degrees
set point (summer) or HEAT
mode high speed with 30
degrees set point (winter).
Check power supply to motor
is higher than 130 VAC. If OK
replace capacitor, if not OK
replace controller.
Check RV power connections.
If OK, check RV operation with
direct 230 VAC power supply,
if OK, replace outdoor
controller.
Check refrigeration system.
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