Faulty Bp Unit Pcb - Daikin E-Series Service Manual

SiENBE18-621
6.2

Faulty BP Unit PCB

E2
Remote Control
Display
Method of
Check data from E
Malfunction
Detection
Malfunction When data could not be correctly received from the E
2
Decision E
supply is turned off.
Conditions
" Defect of BP unit PCB
Supposed
Causes
Troubleshooting
Troubleshooting
2
PROM
PROM : Type of nonvolatile memory. Maintains memory contents even when the power
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Turn off the power once and
turn on again.
Return to normal?
NO
2
PROM
YES
Troubleshooting for BP Unit
External factor other than
malfunction (for example,
noise etc.).
Replace the BP unit PCB.
(Q0391)
301