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IMPORTANT !
Sprinklers and soaker hoses should not be installed
where they could cause prolonged exposure to the
outdoor unit by treated water. Prolonged exposure
of the unit to treated water (i.e., sprinkler systems,
soakers, waste water, etc.) will corrode the surface
of steel and aluminum parts, diminish performance
and affect longevity of the unit.
Thermostat Operation
See the thermostat owner's manual for instructions on how
to operate your thermostat.
Pre-Service Check
If your system fails to operate, check the following before
calling for service:
Verify room thermostat settings are correct.
●
Verify that all electrical disconnect switches are ON.
●
Check for any blown fuses or tripped circuit breakers.
●
Verify unit access panels are in place.
●
Verify air filter is clean.
●
If service is needed, locate and write down the unit
●
model number and have it handy before calling.
Professional Maintenance
Your heating and air conditioning system should be
inspected and maintained yearly (before the start of the
cooling and heating seasons) by a licensed professional
HVAC technician. You can expect the technician to check
the following items. These checks may only be
conducted
by
a
licensed
technician.
Outdoor Unit
1 - Inspect component wiring for loose, worn or damaged
connections. Also check for any rubbing or pinching of
wires. Confirm proper voltage plus amperage outdoor
unit.
2 - Check the cleanliness of outdoor fan and blade
assemblies. Check condition of fan blades (cracks).
Clean or replace them, if necessary.
3 - Inspect base pan drains for debris and clean as
necessary.
4 - Inspect the condition of refrigerant piping and confirm
that pipes are not rubbing copper-to-copper. Also,
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.
professional
HVAC
Page 15
7 - Check outdoor fan motor for worn bearings/bushings.
Replace as necessary.
8 - Inspect and clean outdoor coils, if necessary and note
any damage to coils or signs of leakage.
NOTICE !
Failure to follow instructions will cause damage to
the unit.
This unit is equipped with an aluminum coil. Alu
minum coils may be damaged by exposure to solu
tions with a pH below 5 or above 9. The aluminum
coil should be cleaned using potable water at a mod
erate pressure (less than 50psi). If the coil cannot be
cleaned using water alone, Lennox recommends
use of a coil cleaner with a pH in the range of 5 to 9.
The coil must be rinsed thoroughly after cleaning.
In coastal areas, the coil should be cleaned with
potable water several times per year to avoid corro
sive buildup (salt).
Indoor Unit (Air Handler or Furnace)
1 - Inspect component wiring for loose, worn or damaged
connections. Confirm proper voltage plus amperage
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 evaporator coil (Indoor) 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 replace as necessary.
5 - Inspect and clean evaporator (indoor) coil, if
necessary.
6 - Inspect the condition of the refrigerant lines and
confirm that pipes are not rubbing copper-to-copper.
Also, ensure that refrigerant pipes are not being
affected 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 - Indoor unit inspections of gas- or oil-fired furnaces will
also include inspection and cleaning of the burners,
and a full inspection of the gas valve, heat exchanger
and flue (exhaust) system.
ML14XC1 SERIES
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