Panasonic CW-C70YE Service Manual

Contents

4.2. CW-C70YEItem Pressure (MPa) Temperature (°C)A 1.86 ~ 2.06 70 ~ 85B 1.81 ~ 2.01 31 ~ 41C 0.59 ~ 0.66 8 ~ 14D 0.54 ~ 0.59 13 ~ 21Note: Indoor temperature at 27°C (DB), 19°C (WB) and Outdoor at35°C (DB), 24°C (WB).4.3. CW-C90YEItem Pressure (MPa) Temperature (°C)A 1.96 ~ 2.22 71 ~ 89B 1.91 ~ 2.06 35 ~ 45C 0.56 ~ 0.63 7 ~ 12D 0.50 ~ 0.56 6 ~ 14Note: Indoor temperature at 27°C (DB), 19°C (WB) and Outdoor at35°C (DB), 24°C (WB).4 Refrigeration Cycle Diagram4.1.5 Air Conditioner Performance EvaluationIntake & Discharge AirTemperature DifferenceCurrent Drain Determination Remedy• 8°C and over (14.4°F) • As specified. • Nothing wrong. • None.• 8°C and over (14.4°F) • Higher than specified. • Nothing wrong, outdoortemperature is too high, heatradiation is not efficient.• Improve heat radiation.• Under 8°C (14.4°F) • Higher than specified. • Something is preventing heatradiation.• Excessive amount of refrigerant.• Improve heat radiation.• Under 8°C (14.4°F) • Lower than specified. • Leakage of refrigerant orrefrigerant system is blocked.• Locate repair leak.• Flush refrigeration cycle.• Under 8°C (14.4°F) • Higher than specified by50%.• Compressor defect. • Replace the compressor.Note: Room air humidity is relatively higher, the temperature difference will be smaller.6 Troubleshooting GuideWarning: Disconnect unit from electrical power supply before making any electrical checks.Trouble Check Result Cause RemedyFan Motor and Compressorwon’t run.• Supply Voltage• Fuse Box or CircuitBreaker.• Power cord orWiring Harness.• Thermostat Setting.• Less than 10% byRated.• Open Contacts.• Pulled loose orShorted.• Higher than roomtemp.• Temporary or Permanent?• Customer Restarted unitimmediately without waiting3 minutes.• Consult ELECTRICIAN, Ifpermanent.• Repair Open Circuit.• WAIT FOR 3 MINUTES.• Repair or Replace it.• Set it LOWER.4CW-C70YE / CW-C90YE