Panasonic CS-E18SD3UAW service manual - Page 76
H16 Outdoor Current Transformer
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15.5.5 H16 (Outdoor Current Transformer) Malfunction Decision Conditions An input current, detected by Current Transformer CT, is below threshold value when the compressor is operating at certain frequency value for 3 minutes. Malfunction Caused Lack of gas Broken CT (current transformer) Broken Outdoor PCB Troubleshooting When abnormality indication starts again Refer to Service Manual Technical Graph for Temp vs Current and Pressure For safety reason and to prevent component Caution breakdown, always switch off the power before remove and connect the component. Suction pressure and running current is normal In forced cooling, check suction pressure versus running current Running current is much too low and suction pressure is much too high Check & replace defected CT Running current and suction is very low Compressor Lack Compression Replace Compressor Check for gas leaking source; Repair or replace defected part(s) Capillary tube/expansion valve blockage; Replace defected part(s) 76
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