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OPERATION
Outdoor unit and indoor blower cycle on demand from the
room thermostat. When the thermostat blower switch is
moved to the ON position, the indoor blower operates
continuously.
Page 14 of 19
Before performing maintenance operations on system,
turn the electric power to unit OFF at disconnect
switch(es). Unit may have multiple power supplies.
Electrical shock could cause personal injury or death.
Maintenance and service must be performed by a qualified
installer or service agency.
At the beginning of each cooling season, the system should
be checked as follows:
1. Clean and inspect condenser coil. Coil may be flushed
with a water hose. Be sure the power is off before using
water to clean the coil.
2. Outdoor fan motor is pre-lubricated and sealed. No
further lubrication is needed.
3. Visually inspect connecting lines and coils for evidence
of oil leaks.
4. Check wiring for loose connections.
5. Check for correct voltage at unit (with unit operating).
6. Check amp-draw outdoor fan motor.
Unit Name Plate ________ Actual _________
NOTE: If owner complains of insufficient cooling, the unit
should be gauged and refrigerant charge checked. Refer
to the Refrigerant Charging section on page 10.
Indoor Coil
1. Clean coil, if necessary.
2. Check connecting lines and coils for evidence of oil
leaks.
3. Check condensate pan line and clean, if necessary.
Indoor Unit
1. Clean or change filters.
2. Adjust blower speed for cooling. Measure the pressure
drop over the coil to determine the correct blower CFM.
3. Belt drive blowers: Check belt for wear and proper
tension.
Issue 1140
MAINTENANCE
WARNING
506874-01
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