Carrier 42102500005 Split System Air Conditioner Owner’s Manual

June 4, 2024
Carrier

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Carrier 42102500005 Split System Air Conditioner

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PRODUCT

Our products are designed, tested and built in accordance with US Department of Energy standardized procedures and other standards; however, actual operating results and efficiencies may vary based on manufacturing and supplier tolerances, equipment configuration, operating conditions and installation practices.

A Note about Safety

Any time you see this symbol in manuals, instructions and on the unit, be aware of the potential for personal injury. There are three levels of precaution:

  • DANGER identifies the most serious hazards which will result in severe personal injury or death.
  • WARNING signifies hazards that could result in personal injury or death.
  • CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage.
  • NOTE is used to highlight suggestions that will result in enhanced installation, reliability, or operation.

WARNING OF PERSONAL INJURY, DEATH, AND / OR PROPERTY DAMAGE HAZARD

  • Failure to follow this warning could result in personal injury, death or property damage.
  • Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or service agency must use factory-authorized kits or accessories when modifying this product.
  • Read and follow all instructions and warnings, including labels shipped with or attached to unit before operating your new air conditioner.

Thermostat

Your air conditioner is controlled by the thermostat mounted on your wall. The thermostat is a highly sensitive low voltage device and is available in several different configurations from different manufacturers. The details listed below are typical for most installations. Ask your dealer for more specific information regarding the model of the thermostat installed.

Cooling Mode

Set the system selector switch to COOL. The air conditioner will run until the actual room temperature is lowered to the point you have selected.

Temperature Control

Set the temperature selector to your desired room temperature. The air conditioner will run any time the actual room temperature rises above the point you have selected.

Fan Control

The fan selector switch allows you to run the fan continuously or cycle it automatically with the cooling system. Set the selector switch to ON for continuous operation or to AUTO for automatic cycling. For maximum comfort satisfaction, continuous fan operation throughout the year is recommended (selector switch set to ON).

What To Do If Your System Does Not Work Before Requesting a Service Call:

  1. Check thermostat settings. Make sure to select a temperature below the actual room temperature. Make sure the system selector switch is in the COOL position.
  2. Inspect your return air filter. Replace a dirty filter or clean a reusable type filter.
  3. Check circuit breakers and/or fuses. Reset breakers or replace fuses as necessary.
  4. Inspect the coils and fins on the outdoor unit. Clean away any obstructions (grass clippings, leaves, dirt, dust, or lint). Check that branches, twigs, or other debris are not obstructing the fan blade.

If your system still does not operate, contact your servicing dealer. Have the Model and Serial Numbers of the indoor and outdoor units available and be sure to describe the problem.

Regular Maintenance Requirements

Your system should be regularly inspected by a qualified service technician. Many dealers offer this service at a reduced rate with a service contract. Some service contracts offer additional benefits such as parts discounts and no additional charge for “after hours” or emergency service. Between visits, there are some routine maintenance procedures you can do to help keep your system operating at peak performance.

Operation under Extreme Conditions

Your air conditioner will run as long as necessary to maintain the indoor temperature selected on your Wall Control or thermostat. On extremely hot days, your air conditioner will run for longer periods at a time than on moderate days. Your system will also run for longer periods of time under the following conditions:

  • Frequent opening of exterior doors
  • Operating laundry appliances
  • Taking hot showers
  • More than the usual number of people present in the home
  • More than the normal number of electric lights in use
  • Drapes or blinds are open on the sunny side of the home
Do Not Operate Below 55°F

Your outdoor unit is not designed to operate when outdoor temperatures are lower than 55°F (13°C) without modification. If operation below this temperature is required, consult your authorized dealer.

Do Not Block Floor, Wall or Ceiling Vents
When drapes, furniture, toys or other common household items block vents, the restricted airflow lessens the system’s efficiency and life span.

Sea Coast Coil Maintenance

Coastal locations require additional maintenance of the outdoor unit due to highly corrosive airborne ocean salt. Although your new system is made of galvanized metal and is protected by top-grade paint, we suggest washing all exposed surfaces and the outdoor coil about every 3 months. Consult your dealer for cleaning intervals and procedures or ask about a service contract for scheduled professional cleanings.

WARNING ELECTRICAL SHOCK HAZARD

Failure to turn off electrical power could result in personal injury or death. Turn OFF all electrical power to both the indoor and outdoor units before performing any maintenance or removing any panels or doors. There may be more than one electrical disconnect switch.

Air Filter

Inspect air filters at least monthly and replace or clean as required. Disposable type filters should be replaced. Reusable type filters may be cleaned by soaking in mild detergent and rinsing with cold water. Install filters with the arrows on the side pointing in the direction of airflow. Dirty air filters are the most common cause of inadequate cooling performance, and of compressor failures.

Condensate Drain
The indoor coil condenses water from the air, and this water must be disposed of through an appropriate drain system. During the cooling season check at least monthly for free flow of drainage and clean if necessary.

Outdoor Unit Coils

Grass clippings, leaves, dirt, dust, lint from clothes dryers, and fall-off from trees can be drawn into coils by the movement of the air. Clogged outdoor coils will lower the efficiency of your unit and could cause damage to the compressor. Clean debris away from the outdoor coils.
Use a soft bristle brush with light pressure only. Do not damage or bend coil fins. Damaged or bent fins may affect unit operation.

Painted Surfaces

In geographical areas where the water has a high concentration of minerals (calcium, iron, sulfur, etc.) it is recommended that lawn sprinklers not be allowed to spray on the unit. Spraying this type of water on the unit may result in premature deterioration of the paint finish and metal components. Never use a weather cover over the outdoor unit unless it is a ventilated type or made of breathable fabric that will allow moisture to evaporate rapidly. A cover that holds moisture in the unit will cause more rust build-up and damage than normal exposure to weather.

Table 1 – Maintenance Checklist
Monthly maintenance items and outdoor unit rinsing may be performed by the consumer. All other maintenance items and all service work must be performed by a qualified service technician. Read all Warning labels.

Carrier-42102500005-Split-System-Air-Conditioner-FIG-1

Notes:

  1. The above list may not include all maintenance items. Inspection intervals may vary depending on climate and operating hours. Consult your HVAC dealer about a service contract for seasonal inspections.
  2. Do not use harsh chemicals or high-pressure water on coils. More frequent rinsing is required for units near sea coast.

The manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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