Carrier 40MHH Owner's Manual

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Contents

10CLEANING, MAINTENANCE AND TROUBLESHOOTINGELECTRICAL SHOCK HAZARDFailure to follow this caution may result in personal injuryor death.Always turn off power to the system before performing anycleaning or maintenance to the system. Turn off the outdoordisconnect switch located near outdoor unit. Be sure todisconnect indoor unit if on a separate switchCAUTION!EQUIPMENT DAMAGE/OPERATION HAZARDFailure to follow this caution may result in equipmentdamage or improper unit operation.Operating the system with dirty air filters may damage theindoor unit and could cause reduced cooling performance,intermittent system operation, frost build−up on indoor coilor blown fuses.CAUTION!Periodic MaintenancePeriodic maintenance is recommended to ensure proper operationof the unit. Recommended maintenance intervals may varydepending on the installation environment, e.g., dusty zones, etc.Refer to Table 1.CUT HAZARDFailure to follow this caution may result in personal injury.The coil fins are very sharp. Use caution when cleaning.Always wear safety protection.CAUTION!Cleaning the CoilClean the coil at the beginning of each cooling season, or whennecessary. Use a vacuum cleaner or a long−bristle brush to avoiddamage to the coil fins.Air FiltersRemove and clean the air filters once a month.NOTE: If air filters show signs of excessive wear or are torn, theymust be replaced. Contact your local dealer for replacement filters.1. The air filter is under the top air inlet grill.2. Grip the tab on the end of the filter, lift it up, then pull ittowards yourself.3. If your filter has a small air freshening filter, un−clip it fromthe larger filter. Clean the air freshening filter with a hand−held vacuum.4. Clean the large air filter with warm, soapy water. Be sureto use a mild detergent.5. Rinse the filter with fresh water, then shake off any excesswater.6. Dry it in a cool, dry place, and refrain from exposing it todirect sunlight.7. When dry, re−clip the air freshening filter to the larger filter,then slide it back into the indoor unit.Filter TabFig. 13 − Filter TabFig. 14 − Filter TabFig. 15 − Rinse the FilterAir freshening filter(some units)Fig. 16 − Air Freshening FilterEQUIPMENT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage.When cleaning the front panel, do not use water hotter than105F (40.6C) and do not pour water onto the fan coil. Donot use abrasive or petroleum based cleaners as they maydamage the front panel.CAUTION!