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Anleitung Zusammenfassung
Replace compressor Defective reversing valve creating bypass of refrigerant from discharge to suction side of compressor Incorrect operating pressure. (See chart ) Check strainer and capillary tubes for possible restrictions to flow of refrigerant. The refrigerant system may be contaminated with moisture, noncondensables, and particles Dehydrate, evacuate and recharge the system 13 TROUBLESHOOTING CHART (cont) PROBLEM CAUSE CORRECTION NOISY OPERATION Compressor Make sure the compressor is not in direct contact with the base or sides of the cabinet The hold-down bolts used for shipping should be loosened so that the compressor is floating free on Its isolator mounts Excessive noise will occur If the compressor has a broken valve or loose discharge tube. Replace the compressor Blower and blower motor Blower wheel hitting the casing Adjust for clearance and alignment Bent blower, check and replace if damaged. Loose blower wheel on shaft Check and tighten Defective bearings, check and replace Contactors A clattering or humming noise in the contactor could be due to control voltage less than 18 volts Check for low supply voltage, low transformer output or extra long runs of thermostat wires If the contactor contacts or coil is defective, repair or replace Rattles and vibrations Check for loose screws, panels or Internal components. Tighten and secure. Copper piping could be hitting the metal surfaces Carefully readjust by bending slightly. Airborne noises and other sounds Undersized ductwork will cause high airflow velocities and noisy operation Excessive water thru the water-cooled heat exchanger will cause a rattling sound Throttle back on the water flow ensuring adequate flow for good operation but eliminating the noise For replacement items use Carrier Specified Parts. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Form 50HQ,VQ-1 SI New PrintedinUSA 4-81 PC 111 Catalog No 535-029 Book 1 4 Tab 5a 5a...