Rotation Pulse Check On The Outdoor Unit Pcb; Installation Condition Check - Daikin 4MXL-T Series Service Manual

Check
8.9

Rotation Pulse Check on the Outdoor Unit PCB

Check No.16
Manually rotate the outdoor fan motor and check if 4 pulses of sinusoidal voltage are detected
between pins 1-2 and then pins 2-3.

8.10 Installation Condition Check

Check No.17
240

Installation condition check

Check the allowable
dimensions of the air
suction and
discharge area.
OK
Is the discharged air
short-circuited?
NO
Is the outdoor heat
exchanger very dirty?
NO
Is the airflow blocked by
obstacles or winds
blowing in the opposite
direction?
YES
S70
3 U (red)
2 V (white)
1 W (black)
NG
YES
YES
NO
SiUS121827E
R6000524
Change the installation
location or direction.
Change the installation
location or direction.
Clean the outdoor heat
exchanger.
Check the outdoor temperature.
(The outdoor temperature
should be within the operation
range.)
Change the installation
location or direction.
(R19394)
Part 6 Service Diagnosis