U3" Check Operation Not Executed - Daikin VRV II RXYQ5MY1B Service Manual

SiE39-404

2.42 "U3" Check Operation not executed

U3
Remote
Controller
Display
Applicable RXYQ5~48M
Models
Method of
Check operation is executed or not
Malfunction
Detection
Malfunction Malfunction is decided when the unit starts operation without check operation.
Decision
Conditions
Supposed
Causes
Troubleshooting
Troubleshooting
Check operation is not executed.
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Has the
check operation
performed on Outdoor
unit P.C.B?
YES
Troubleshooting by Indication on the Remote Controller
NO
Press the BS4 on P.C. board on
the master outdoor unit for 5
seconds or more to execute check
Replace the main P.C. board on
the outdoor unit.
(V3052)
221