Daikin 2MXM50M Service Manual

Contents

Daikin 2MXM50M Service Manual Manual pdf 21 page image

ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting4/04/17 | Version 1.1 Page 21RA R32 Split & multi split M-Series2.2.1. Indoor unit2.2.1.1. “A1-00” – PCB abnormality2.2.1.2. “A1-01” – PCB abnormalityTrigger Effect ResetThe system cannot set the internal set-tingsUnit will stop operating. Power reset via outdoor unit.Possible cause Check Corrective actionWrong models interconnected Check if unit combination is official.Refer to ‘Combination database’.Install compatible models.Faulty wiring. Check the connection of all terminals bydisconnecting and reconnecting all termi-nals.Replace wire harness/terminal when con-nection is not OK.Faulty or disturbance of the power supply(imbalance > 10%). Power drop. Short cir-cuit.Check if the power supply is conform withregulations. No fluctuations in frequency.Adjust power supply when required.Power reset via outdoor unit.Faulty indoor PCB. Check if error still occurs after turning offpower and turning it back on again.Check if the indoor PCB receives power.Check if the HAP LED is blinking in regu-lar intervals.Check if the correct spare part is installed.Check the wiring to indoor PCB.Adjust power to the indoor PCB.Replace indoor PCB when HAP LED isnot blinking in regular intervals.Install correct spare part or update indoorPCB.Adjust wiring to indoor PCB whenrequired.Trigger Effect ResetThe system cannot set the internal set-tingsUnit will stop operating. Power reset via outdoor unit.Possible cause Check Corrective actionWrong models interconnected Check if unit combination is official.Refer to ‘Combination database’.Install compatible models.Faulty wiring. Check the connection of all terminals bydisconnecting and reconnecting all termi-nals.Replace wire harness/terminal when con-nection is not OK.Faulty or disturbance of the power supply(imbalance > 10%). Power drop. Short cir-cuit.Check if the power supply is conform withregulations. No fluctuations in frequency.Adjust power supply when required.Power reset via outdoor unit.Faulty indoor PCB. Check if error still occurs after turning offpower and turning it back on again.Check if the indoor PCB receives power.Check if the HAP LED is blinking in regu-lar intervals.Check if the correct spare part is installed.Check the wiring to indoor PCB.Adjust power to the indoor PCB.Replace indoor PCB when HAP LED isnot blinking in regular intervals.Install correct spare part or update indoorPCB.Adjust wiring to indoor PCB whenrequired.