Pcb Abnormality - Daikin SkyAir RZQ-P Series Service Manual

Troubleshooting by Indication on the Remote Controller
3.2

PCB Abnormality

A1
Remote
Controller
Display
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
Conditions E²PROM: Type of nonvolatile memory. Maintains memory contents even when the power
 Defective indoor unit PCB
Supposed
 External factor (Noise etc.)
Causes
Troubleshooting
90
supply is turned OFF.
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector or parts may be damaged.
Turn the power supply OFF,
then the power ON again.
Does the
system return to
normal?
NO
YES
SiUS28-902_B
The indoor unit PCB is
normal.
External factor other than
error (for example, noise
etc.).
Replace the indoor unit
PCB.
Service Diagnosis