Troubleshooting By Indication On The Remote Controller; A1" Indoor Unit: Pc Board Defect - Daikin ALTHERMA HT ERSQ 011 AA Service Manual

Troubleshooting by Indication on the Remote Controller

3. Troubleshooting by Indication on the Remote
Controller
"A1 " Indoor Unit: PC Board Defect
3.1
A1
Remote Control
Display
Subcode 0
Applicable Models All indoor unit models
Method of
Check data from E²PROM.
Malfunction
Detection
Malfunction When data could not be correctly received from the E²PROM
Decision Conditions E²PROM: Type of nonvolatile memory. Maintains memory contents even when the power supply is
turned off.
 Defect of indoor unit PC board
Supposed Causes
Troubleshooting
142
Be sure to turn off power switch before connecting or disconnecting connector,
Caution
otherwise parts may be damaged.
Turn power supply OFF, then
power ON again.
Does the system
return to normal?
NO
YES
ESIE09-08A
External factor other than
malfunction (for example,
noise etc.).
Replace the indoor unit PC
board (A1P).
(V2777)
Troubleshooting