Daikin 2MXM50M Service Manual

Contents

Daikin 2MXM50M Service Manual Manual pdf 29 page image

ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting4/04/17 | Version 1.1 Page 29RA R32 Split & multi split M-Series2.2.2.8. “F3-00” – Discharge pipe temperature abnormality2.2.2.9. “F6-00” – High pressure abnormality or refrigerant overchargeTrigger Effect ResetDischarge temperature is too high:• If the discharge temperature detectedis above A°C, 10 times within 200 min.• If within 200 min the dischargetemperature detected is 10 timesabove B°C for 15 min.Unit will not stop operating. Automatic reset when temperature dropsbelow C°C.Unit will stop operating. Manual reset via remote controller.Possible cause Check Corrective actionRefrigerant shortage. Check for refrigerant shortage. Refer tothe nameplate for the correct charge.Charge the correct refrigerant amountwhen required.Humidity in refrigerant (ice formation inexpansion valve).Check for humidity in the refrigerant. In case of suspicion of humidity, recover,vacuum and recharge with virgin refriger-ant.Non condensables in refrigerant. Check for non condensables in refriger-ant.In case of suspicion of non condensables,recover, vacuum and recharge with virginrefrigerant.Stop valve is closed. Check if stop valve is open. Open stop valve when required.Faulty 4-way valve. Check the 4-way valve. Replace the 4-way valve coil or bodywhen required.Faulty expansion valve. Check the expansion valve. Replace the expansion valve body ormotor when required.Faulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-lar intervals.Check if the correct spare part is installed.Check if the outdoor main PCB receivespower.Restore the power to the outdoor mainPCB.Replace outdoor main PCB when HAPLED is not blinking in regular intervals.Faulty discharge thermistor. Check discharge thermistor. Replace discharge thermistor whenrequired.Faulty heat exchanger thermistor. Check heat exchanger thermistor. Replace heat exchanger thermistor whenrequired.Faulty outdoor temperature thermistor. Check outdoor temperature thermistor. Replace outdoor temperature thermistorwhen required.Trigger Effect ResetOutdoor heat exchanger thermistor meas-ures temperature > 60°C~65°C (depend-ing on model).Unit will not stop operating. Automatic reset when temperature dropsbelow 50°C.Possible cause Check Corrective actionInstallation space is too small. Check if the installation space is in linewith regulations.Adjust installation space.Dirty outdoor heat exchanger. Clean the outdoor heat exchanger.Faulty outdoor fan motor. Check the fan motor.Check fan motor connections and wiring.Replace fan motor when required.Adjust wiring when required.Faulty stop valve. Check the stop valve. Replace the stop valve when required.Faulty heat exchanger thermistor. Check heat exchanger thermistor. Replace heat exchanger thermistor whenrequired.Faulty expansion valve. Check the expansion valve. Replace the expansion valve body ormotor when required.