Troubleshooting By Indication On The Remote Controller; A1" Indoor Unit: Pc Board Defect - Daikin ALTHERMA HT 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
All indoor unit models
Applicable
Models
Check data from E²PROM.
Method of
Malfunction
Detection
When data could not be correctly received from the E²PROM
Malfunction
E²PROM: Type of nonvolatile memory. Maintains memory contents even when the power
Decision
supply is turned off.
Conditions
 Defect of indoor unit PC board
Supposed
Causes
Troubleshooting
132
Be sure to turn off power switch before connect or disconnect
connector, or parts damage may be occured.
Caution
Turn power supply OFF, then
power ON again.
Does the system
return to normal?
NO
YES
ESIE09-08B
External factor other than
malfunction (for example,
noise etc.).
Replace the indoor unit PC
board (A1P).
(V2777)
Troubleshooting