Daikin Super Multi NX FFQ25B8V1B User Manual

SiBE121021_C Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
Service Diagnosis 319
6. Troubleshooting for SA Indoor Unit - FFQ, FCQ,
FDBQ, FBQ, FHQ Series
6.1 Indoor Unit PCB Abnormality
Remote
Controller
Display
A1
Method of
Malfunction
Detection
The system checks the data from EEPROM.
Malfunction
Decision
Conditions
When the data from the EEPROM is not received correctly
EEPROM (Electrically Erasable Programmable Read Only Memory): A memory chip that holds
its content without power. It can be erased, either within the computer or externally and usually
requires more voltage for erasure than the common +5 volts used in logic circuits. It functions
like non-volatile RAM, but writing to EEPROM is slower than writing to RAM.
Supposed
Causes

Defective indoor unit PCB
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Replace the indoor unit PCB.
(R11294)
Normal?
Switch the power off and on
again to restart.
NO
YES
External factor other than malfunction.
(for example, noise etc.)

Daikin Super Multi NX FFQ25B8V1B Specifications

General

Brand	Daikin
Model	Super Multi NX FFQ25B8V1B
Category	Air Conditioner
Language	English