Daikin SkyAir RZQ-P Series Service Manual

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Contents

Daikin SkyAir RZQ-P Series Service Manual Manual pdf 34 page image

Protection Control SiUS28-902_B26 Function4.4 Inverter Protection ControlTb: Outdoor unit heat exchanger temperatureTfin: Radiation fin temperatureInverter current protection control and radiation fin temperature control are performed to preventtripping due to an error, or transient inverter overcurrent, and radiation fin temperature increase.[Inverter overcurrent protection control][Inverter radiation fin temperature control]Not limitedInverter current > X AInverter current > X AInverter current ≥ 24.9A&• 15 sec.&ORLimited INV. upper limit frequency:1-step down from currentcompressor frequencyINV. upper limit frequency:1-step up from currentcompressor frequencyInverter currentstandbyInverter current ≤ X A continuesfor 3 min.Status quoWithout conditionsX A13.7Tb ≥ 77˚F12.7Tb < 77˚F• Inverter current ≤ X A• INV. upper limit frequency• When occurring 3 times within 60 min.,the error code "L8" is output.• When occurring 4 times within 60 min.,the error code "L9" is output.• 10 sec.• Matching of frequencyNot limitedTfin ≥ 179.6˚FTfin ≥ 179.6˚FTfin ≥ 180˚FRadiation fin temp. standby&Limited INV. upper limit frequency:1-step down from currentcompressor frequency&Tfin ≤ 174.2˚Fcontinues for 3 min.INV. upper limit frequency:1-step up from currentcompressor frequencyStatus quoWithout conditions• 15 sec.OR• When occurring 3 times within 60 min.,the error code "L4" is output.• Tfin < 174.2˚F• INV. upper limit frequency• 10 sec.• Matching of frequency