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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.
IF YOUR SYSTEM STILL DOES NOT OPERATE,
CONTACT YOUR SERVICING DEALER.
Be sure to describe the problem, and have the model and
serial numbers of the equipment available.
If warranty replacement parts are required, the warranty
must be processed through a qualified distribution location.
Professional Maintenance
IMPORTANT
Failure to follow instructions will cause damage to the
unit.
This unit is equipped with an aluminum coil. Aluminum
coils may be damaged by exposure to solutions with
a pH below 5 or above 9. The aluminum coil should
be cleaned using potable water at a moderate pressure
(less than 50psi). If the coil cannot be cleaned using
water alone, the use of a coil cleaner with a pH in the
range of 5 to 9 is recommended. 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 corrosive buildup
(salt).
Your air conditioning system should be inspected and
maintained twice each year (before the start of the cooling
season) 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
professional HVAC technician.
Outdoor Unit
Inspect component wiring for loose, worn or damaged
connections. Also check for any rubbing or pinching of
wires. Confirm proper voltage plus amperage of 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 of
outdoor unit.
508296-01
2.
Check the cleanliness of outdoor fan and blade
condition (cracks) and 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.
Inspect contactor contacts for pitting or burn marks.
Replace as necessary.
6.
Check outdoor fan motor for worn bearings/bushings.
Replace as necessary.
7.
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 damaged
connections. Confirm proper voltage plus amperage
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
replace as necessary.
5.
Inspect and clean 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.
General System Test with System Operating
1. Your technician should perform a general system test.
He will turn on the air conditioner to check operating
functions such as the startup and shutoff operation.
He will also check for unusual noises or odors, and
measure indoor/outdoor temperatures and system
pressures as needed. He will check the refrigerant
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.
Issue 2231
Page 23 of 25
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