Daikin 2MXM50M Service Manual page 37

ESIE16-02B | Part 2. Troubleshooting
Possible cause
Faulty outdoor unit PCB in which radiating
fin thermistor is connected.
More info:
Check procedures
"Refrigerant thermistors" on page 56
"Main PCB" on page 53
4/04/17 | Version 1.1
RA R32 Split & multi split M-Series
Check
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 receives
power.
Replacing procedures
"Replacing thermistors" on page 87
"Replacing main PCB" on page 84
2.2. Error based troubleshooting
Corrective action
Restore the power to the outdoor main
PCB.
Replace outdoor main PCB when HAP
LED is not blinking in regular intervals.
Page 37