Carrier 48PG03---16 specifications Condenser Fan

and the Alarm Status LED is on, contact the local dealer and request service.

Integrated Gas Controller (IGC) — The IGC board incorporates an LED that emits a flashing light to indicate an alarm code. If the furnace section will not operate and the LED is flashing a code (1 to 9 flashes in succession), contact your dealer and request service.

Combustion Area and Vent System — The com- bustion area and vent system should be visually inspected be- fore each heating season. The normal accumulation of dirt, soot, rust, and scale can result in loss of efficiency and improp- er performance if allowed to build up.

If your unit makes an especially loud noise when the main burners are ignited, shut down the heating section and call your dealer.

See Fig. 1 and proceed as follows to inspect the combustion area and power-venting system of your unit.

1.Turn off electrical power (install disconnect tag) and gas supply to your unit.

2.Open burner compartment access panel.

3.Using a flashlight, carefully inspect the burner areas for dirt, soot, or scale.

If dirt, soot, rust or scale accumulations are found, call your dealer and do not operate your heating section.

4.When you have completed your inspection, follow the start-up procedures in this manual to restore your unit to operation.

5.Observe unit heating operation, and watch the burner flame with the access panel removed to see if it is bright blue. If you observe a suspected malfunction, or that the burner flames are not bright blue, call your dealer. See Fig. 7. Some yellow flame may be present due to the pan- el being removed.

6.Close burner compartment access panel.

Fig. 7 — Proper Flame Appearance

Heat Exchanger — To ensure dependable and efficient heating operation, the heat exchanger should be checked by a qualified maintenance person before each heating season, and cleaned when necessary. This checkout should not be attempt- ed by anyone not having the required expertise and equipment to do the job properly. Checking and/or cleaning the heat

exchanger involves removing the gas controls assembly and the flue collector box cover and, when completed, reinstalling the gas controls assembly for proper operation. The flue collec- tor box cover must be reinstalled correctly so that a proper seal is maintained. Contact your dealer for the required periodic maintenance.

Evaporator, Condenser, and Combustion Fan Motors — The indoor fan, outdoor fan, and combustion fan motors have permanently sealed bearings, so no field lubrica- tion is necessary.

Indoor Fan, Belt, and Pulleys — Periodically check the condition of the fan wheel(s), pulleys, fan belt and the belt tension. If there is any loose part or belt wear, contact your dealer and request service.

Indoor Fan Shaft Bearings (Sizes 03-14) — The indoor fan has permanently sealed bearings, so no field lubrica- tion is necessary.

Indoor Fan Shaft Bearings (Size 16) — Lubri- cate bearings at least every 6 months with suitable bearing grease. Typical lubricants are given below:

MANUFACTURER	LUBRICANT
Texaco	Regal AFB-2*
Mobil	Mobilplex EP No. 1
Sunoco	Prestige 42
Texaco	Multifak 2

*Preferred lubricant because it contains rust and oxidation inhibitors.

Refrigerant Circuits — The refrigerant circuits are dif- ficult to check for leaks without the proper equipment; there- fore, if inadequate cooling is suspected, contact your dealer for service.

Evaporator and Condenser Coils — Cleaning of the coils should only be done by qualified service personnel. Con- tact your dealer for the required annual maintenance.

Condensate Drain — The drain pan and condensate drain line should be checked and cleaned at the same time the cooling coils are checked by your dealer.

Compressors — All compressors are factory shipped with a normal charge of the correct type refrigerant grade oil. No field lubrication is necessary except possibly with repair or replacement of refrigerant circuit components.

Condenser Fan

Do not poke sticks, screwdrivers, or any other object into revolving fan blades. Severe bodily injury may result.

The fan must be kept free of all obstructions to ensure prop- er cooling. Contact your dealer for any required service.

Electrical Controls and Wiring — Electrical controls are difficult to check without proper instrumentation; therefore, if there are any discrepancies in the operating cycle, contact your dealer and request service.

Unit Panels — After performing any maintenance or service on the unit, be sure all panels are securely fastened in place to prevent rain from entering unit cabinet and to prevent disruption of the correct unit airflow pattern.

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