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SYSTEM OPERATION Your thermostat puts full control of the comfort level in your home at your fingertips. DO NOT switch your thermostat rapidly “On” and “Off” or between “Heat” to “Cool” This could damage your equipment. Always allow at least 5 minutes between changes. SETTING THE THERMOSTAT Although thermostats may vary widely in appearance, they are all designed to perform the same basic function: to control the operation of your air conditioning or heat pump system. Regardless of size or shape, each thermostat will feature a temperature indicator; a dial, arm, or push button for selection of the desired temperature; a fan switch to choose the indoor fan operation; and a comfort switch for you to select the system mode of operation. Only approved thermostats have been tested and are fully compatible with this equipment. Please be aware that many different thermostats operate on batteries or “power stealing” principals. These types of thermostats can not be supported as trouble free when used with this product. A complete operating instruction is provided by the manufacturer for each thermostat. Familiarize yourself with its proper operation to obtain the maximum comfort with minimum energy consumption. If your system has been designed to allow both cooling and heating operation, you may have either a manual change-over type, or a programmable electronic type thermostat. Manual change-over simply means that the comfort switch must be manually positioned every time you wish to switch from the cooling to heating or heating to cooling modes of operation. The computerized electronic thermostat is actually a sophisticated electronic version of a manual change-over type. This thermostat includes features which allow “set-back” temperature variations for periods of sleep, or while you are away during the day, and means energy savings for you. The thermostat also features a digital clock. The main power to the system must be kept “ON” at all times to prevent damage to the outdoor unit compressor. If necessary, the thermostat control switch should be used to turn the system “OFF”. Should the main power be disconnected or interrupted for 8 hours or longer, DO NOT attempt to start the system for 8 hours after the power has been restored to the outdoor unit. If heat is needed during this 8 hour period, use emergency heat. 126114-UUM-D-0906 126114-UUM-D-0906 2 Unitary Products Group 126114-UUM-D-0906 If your system is an add-on type, (installed in conjunction with a standard furnace) inspect your furnace blower motor and care for it in the same way. FILTER CARE Inspect the air filter(s) at least once a month. If they are dirty, wash reusable filters with a mild detergent per manufacturer’s recommendations. Replace disposable filters with new filters. Install the clean filters with “air flow” arrow in the same direction as the air flow in your duct. Filters should be clean to assure maximum efficiency and adequate air circulation. Drapes, furniture or other obstructions blocking your supply and return air grilles will also decrease efficiency. OUTDOOR UNIT FINISH If you wish to maintain the finish of the outdoor unit, it can be polished with car wax. It is recommended the unit be cleaned with soap and water prior to waxing. TROUBLESHOOTING GUIDE PROBLEM CHECK ACTION TO TAKE FAULT CODE No Heat or Cooling 1. Thermostat for proper settings. Set thermostat to proper setting. - 2. Circuit breakers and fuses. Reset circuit breakers - Replace blown fuses. - 3. Check outdoor unit for dirty coil (Cooling). Clean coil, see “COIL CARE” section. 2 4. Outdoor unit for snow accumulation. (Heating). Remove loose snow only. 3 5. Indoor unit for dirty filter (Heating). Clean or replace, see “FILTER CARE” section. 2 6. Emergency heat light status on thermostat. Check 1 - 5, call qualified service person. 2 Light on = Malfunction Check 1 - 5, call qualified service person. - Light flashing = Malfunction Check 1 - 5, call qualified service person with fault code. - Wet on Floor or in Furnace Condensate drain and “P” trap Remove blockage, usually mold or fungus. - CLEARANCES The minimum clearances shown below must be maintained should any patio or yard improvements be done around the outdoor unit. • Top 48” • Sides 12” • Access 24” POWER INTERRUPTION When ice, snow, wind storms, etc. disrupt electrical power supply to your house, proceed as follows: Heating Season 1. Switch thermostat to emergency heat. NOTE: There will be no heat available until power is re-established. 2. Leave on emergency heat for at least 8 hours after electrical power is re-established if the power was off more than 8 hours. 3. Switch thermostat back to heating or auto. Cooling Season 1. Switch thermostat to OFF position. 2. Do not switch to cooling or auto until electrical power has been reestablished for 8 hours if the power was off more than 8 hours. SERVICE CALLS There are a few instances where you can avoid unnecessary service calls. (See Troubleshooting Guide abo...
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