Napoleon 13 SEER Installation And Operating Instructions Manual page 23

Normal suction
Refrigerant overcharge
pressure
Outdoor fan not running
Air or non-condensables in system
Low head pressure;
Expansion device stuck in open position
High suction
Defective compressor valves
pressure
Low suction
Low indoor airflow
pressure;
Compressor cool;
Operating below 65degF outdoors
Ice on indoor coil
Moisture in system
High suction
Excessive load
pressure;
Defective compressor
or �luctuating head
and suction
TXV hunting
pressures
Air or non-condensibles in system
Pulsing noise at
Air or non-condensibles in system
expansion device or
liquid line
Registers sweat
Low indoor airflow
Correct system charge
Repair or replace
Recover refrigerant, evacuate and recharge
Replace expansion device
Replace compressor
Increase speed of blower or reduce restriction –
replace air filter
Add low ambient kit
Recover refrigerant – evacuate and recharge –
replace filter drier
Recheck load calculation
Replace
Check TXV bulb clamp – check air distribution on
coil – replace TXV
Recover refrigerant, evacuate and recharge
Recover refrigerant, evacuate and recharge
Increase speed of blower or reduce restriction –
23
TABLE 4. CONT.
IOM
W415-1395 / C / 06.26.2017