Integrated Gas Controller (Igc); Combustion Area And Vent System; Heat Exchanger; Combustion Fan Motors - Carrier 48PG03---16 User's Information Manual

and the Alarm Status LED is on, contact the local dealer and
request service.
Integrated Gas Controller (IGC) —
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 —
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-
The IGC board
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 com-
motors have permanently sealed bearings, so no field lubrica-
tion is necessary.
Indoor Fan, Belt, and Pulleys —
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) —
indoor fan has permanently sealed bearings, so no field lubrica-
tion is necessary.
Indoor Fan Shaft Bearings (Size 16) —
cate bearings at least every 6 months with suitable bearing
grease. Typical lubricants are given below:
*Preferred lubricant because it contains rust and oxidation inhibitors.
Refrigerant Circuits —
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 —
coils should only be done by qualified service personnel. Con-
tact your dealer for the required annual maintenance.
Condensate Drain —
drain line should be checked and cleaned at the same time the
cooling coils are checked by your dealer.
Compressors —
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 —
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 —
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.
9
The indoor fan, outdoor fan, and combustion fan
MANUFACTURER
Texaco
Mobil
Sunoco
Texaco
The refrigerant circuits are dif-
The drain pan and condensate
All compressors are factory shipped
After performing any maintenance or
Periodically check
The
Lubri-
LUBRICANT
Regal AFB-2*
Mobilplex EP No. 1
Prestige 42
Multifak 2
Cleaning of the
Electrical controls