Pcb Abnormality - Daikin VRV-WIII RWEYQ72PTJU Service Manual

Troubleshooting by Indication on the Remote Controller
3.2

PCB Abnormality

A1
Error Code
Applicable All indoor models
Models
Method of Error
Check data from E²PROM.
Detection
Error Decision
When data could not be correctly received from the E²PROM
E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power supply
Conditions
 Defective of indoor unit PCB
Supposed
 External factor (Noise etc.)
Causes
Troubleshooting
152
is turned off.
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn the power supply OFF,
then the power ON again.
Does the
system return to
normal?
NO
YES
SiUS30-1301
The indoor unit PCB is
normal.
External factor other than
error (for example, noise
etc.).
Replace the indoor unit
PCB.
Service Diagnosis