Pc Board Defect; E1" Outside Unit: Pc Board Defect - Daikin VRV - WII Service Manual

Troubleshooting by Indication on the Remote Controller
2.13 "E1" Outside Unit:
E1
Remote
Controller
Display
Applicable RWEYQ60, 72, 84MTJU
Models
Method of Detect abnormalities by checking communication status of the hard part between the indoor unit
and outside unit.
Malfunction
Detection
Malfunction When communication status of the hard part between the indoor unit and heat source unit is
abnormal
Decision
Conditions
Supposed
Causes
Troubleshooting
172

PC Board Defect

Faulty main PCB
Faulty communication part (photo coupler) on the main PCB
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Turn off the power supply once
and then turn it on again.
Does it return normally?
NO
Foreign
particles (electrically
conductive) are attached on
the terminal (X1M) of
the main
PCB.
NO
YES
YES
SiUS30-604
Check the following parts and
continue operation
• Check noise, etc.
• Check whether foreign
particles (electrically
conductive) attach to the terminal
of the main PCB (X1M).
Remove the foreign particles
(electrically conductive) and
restart operation.
Replace the heat source
main PCB.
Troubleshooting