Carrier 48PD05, 06 manual Alarm Status Units with ComfortLinkt Controls

48PD, 48PG

Table 1 – Indoor Air Filter Data

UNIT	FILTER QUANTITY	FILTER SIZE
SIZE
03--- 07	4	16 x 20 x (2 or 4) in
		(406.4 x 508 x [50.8 or 101.6]) mm
08--- 14	4	20 x 25 x (2 or 4) in
		(508 x 635 x [50.8 or 101.6]) mm
16	8	20 x 20 x (2 or 4) in
		(508 x 508 x [50.8 or 101.6]) mm

Alarm Status

(Units with ComfortLinkt Controls)

The Scrolling Marquee display incorporates an Alarm Status LED that turns on to indicate an active alarm or alert. These alarms and alerts are in addition to those that are indicated by the Integrated Gas Control (IGC). The ComfortLink control active alarm codes and alarm history can be viewed with the Scrolling Marquee or other Carrier Comfort Networkr (CCN) devices. Alarms may also be configured to broadcast automatically on CCN. If the unit will not operate 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.

NOTE: Make note of the flash code before powering off the unit. The alarm codes clear after power cycle.

Combustion Air and Vent System

The combustion area and vent system should be visually inspected before each heating season. The normal accumulation of dirt, soot, rust, and scale can result in loss of efficiency and improper performance if allowed to build up.

!WARNING

FIRE HAZARD

Failure to follow this warning could result in personal injury, death, and/or property damage.

If your unit makes and 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.

7.Turn off electrical power (install disconnect tag) and gas supply to your unit (follow Shut-Off Steps 1-3).

8.Open burner compartment access panel.

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

!CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in damage to unit.

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

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

11.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. Some yellow flame may be present due to the panel being removed.

12.Close burner compartment access panel.

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 attempted 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 collector box cover must be reinstalled with “red” RTV 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 lubrication is necessary.

Indoor Fan, Belt and Pulleys

Check quarterly 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 lubrication is necessary.

Indoor Fan Shaft Bearings (Size 16)

Lubricate 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 difficult to check for leaks without the proper equipment; therefore, 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. This procedure should be performed prior to cooling operation or more frequently should conditions require. Contact 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.

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