Troubleshooting; Air Conditioning Troubleshooting - Napoleon P-E Série Instructions D'installation Et D'opération

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8. TROUBLESHOOTING

8.1

AIR CONDITIONING TROUBLESHOOTING

IOM
IOM
WARNING!
FAULT CONDITION
Unit will not
operate.
Outdoor fan ON;
Compressor OFF
Outdoor fan OFF;
Compressor OFF
Indoor Blower OFF
Too little cooling
W415-2288 / 08.29.2019
AIR CONDITIONING TROUBLESHOOTING GUIDE
THIS TROUBLESHOOTING GUIDE IS INTENDED FOR USE BY
QUALIFIED SERVICE PERSONNEL ONLY!
POSSIBLE CAUSE
Power disconnected or loose
connection
Blown fuse / breaker tripped
Thermostat out of calibration/is set
too high
Contactor defective
Transformer defective
High pressure control open
(if provided)
Run or start capacitor defective
Start relay defective
Loose wire
Compressor stuck, grounded or open
motor winding, open internal
overload
Loose connection
Blown fuse on compressor branch
circuit
Defective Contactor
Defective Run Capacitor
Loose wiring connection
Blown fuse on indoor blower branch
circuit
Low voltage condition
Improperly sized unit
Improper indoor airflow
Incorrect refrigerant charge
Air, non-condensables or moisture in
system
Condenser fan not operating
Condenser coil plugged with debris
CORRECTION
Check power supply to unit
Check voltage at contactor in condensing unit
Replace fuses/reset breaker.
Reset
Check for 24VAC at contactor coil, replace if open
Check wiring – Replace transformer
Reset – See high pressure connection
Replace
Replace
Check for correct voltage at compressor – check
and tighten all connections
Wait at least 2 hours for overload to reset; if still
open, replace the compressor
Check the wiring and make sure they are tight
With power OFF, test continuity across fuse holder.
Replace t he fuse with same fuse size and type.
With power OFF, test continuity of contactor coil
contacts. Replace is defective.
With power OFF, test continuity. Replace capacitor
if defective
Check wiring connections and make sure they are
all tight.
With power OFF, test continuity. Replace with
same fuse size and type.
Add start kit components
Recalculate load
Check-should be approximately 400 CFM per ton
Charge per procedure in installation manual
Recover refrigerant
Check wiring connections. Check fan motor
Remove the unit and clean coil.
TABLE 8.