Lennox XP14-018-230 Installation Instructions Manual page 17

check the condition of the insulation on the refrigerant
lines. Repair, correct, or replace as necessary.
5 - Test capacitor. Replace as necessary.
6 - Inspect contactor contacts for pitting or burn marks.
Replace as necessary.
7 - Check outdoor fan motor for worn bearings/bush­
ings. Replace as necessary.
8 - Inspect and clean outdoor coils, if necessary and
note any damage to coils or signs of leakage.
Indoor Unit (Air Handler or Furnace)
1 - Inspect component wiring for loose, worn or dam­
aged connections. Confirm proper voltage plus am­
perage of indoor unit.
2 - Inspect and clean or replace air filters in indoor unit.
3 - Check the cleanliness of indoor blower and clean
blower, if necessary.
4 - Inspect the indoor coil drain pans and condensate
drains for rust, debris, obstructions, leaks or cracks.
Pour water in pans to confirm proper drainage from
the pan through to the outlet of the pipe. Clean or re­
place as necessary.
5 - Inspect and clean indoor coil, if necessary.
6 - Inspect the condition of the refrigerant lines and con­
firm that pipes are not rubbing copper-to-copper.
Also, ensure that refrigerant pipes are not being af­
fected by indoor air contamination. Check condition
of insulation on the refrigerant lines. Repair, correct,
or replace as necessary.
7 - Inspect the duct system for leaks or other problems.
Repair or replace as necessary.
8 - Check for bearing/bushing wear on indoor blower
motor. Replace as necessary.
9 - If your heat pump is matched with a gas- or oil-fired
furnace for auxiliary heating, indoor unit service will
also include inspection and cleaning of the burners,
and a full inspection of the gas valve, heat exchanger
and flue (exhaust) system.
General System Test with System Operating
1 - Your technician should perform a general system
test. He will turn on the air conditioner to check oper­
ating functions such as the start­up and shut­off oper­
ation. He will also check for unusual noises or odors,
and measure indoor/outdoor temperatures and sys­
tem pressures as needed. He will check the refriger­
ant charge per the charging sticker information on the
outdoor unit.
2 - Verify that system total static pressure and airflow
settings are within specific operating parameters.
3 - Verify correct temperature drop across indoor coil.
Page 17
XP14 SERIES