Panasonic CU-2TZ41TBE Service Manual

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Panasonic CU-2TZ41TBE Service Manual Manual pdf 35 page image

3514.5 Cooling overload control (Cool) This control detect outdoor pipe temperature and perform the compressor frequency restriction during coolingoperation.Comp stopComp freqrestricted59°C56°CComp freqfree63°COD Pipetemp14.6 Heating overload control (Heat) This control detect indoor pipe temperature and perform the compressor frequency restriction during heatingoperation.Comp stopComp freqrestricted53°CComp freqfree59°CID Pipetemp48°CComp freqmaintain This control detect outdoor ambient temperature and perform the fan speed adjustment during heating operation.RPM controlled12°C10°CRPM freeOD temp14.7 Extreme Low Temperature Compressor low pressure protection control(Heat) This control is to prevent low pressure drops too low during extremely low outdoor ambient temperature toimprove the compressor reliability. During heating operation, when outdoor ambient temperature is in Zone 1, this control will be activated.Compressor frequency restriction will be based on outdoor piping temperature.Zone 0-5°C-3°CZone 1OD tempComp freqfreeComp freqrestrictedComp freqstop-25°C-23°C-28°C-26°COD pipe