Daikin D-Series User Manual

Troubleshooting for SkyAir Indoor Unit Si18-525B
340 Troubleshooting
5. Troubleshooting for SkyAir Indoor Unit
5.1 Indoor Unit PCB Abnormality
Remote
Controller
Display
A1
Applicable
Models
FFQ, FCQ, FBQ, FHQ
Method of
Malfunction
Detection
Check data from E²PROM.
Malfunction
Decision
Conditions
When data could not be correctly received from the E²PROM
E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power
supply is turned off.
Supposed
Causes

Failure of PCB
Troubleshooting
Turn the power supply off once
and then back on.
Normal reset?
YES
NO
Could be outside cause
(noise, etc.)
other than malfunction
Indoor unit PCB
replacement
(Q0411)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

Daikin D-Series Specifications

General

HSPF Rating	Up to 10.0
Cooling Capacity	9, 000 - 36, 000 BTU/h
Heating Capacity	9, 000 - 36, 000 BTU/h
Energy Efficiency Ratio (EER)	Up to 12.5
Sound Level	19 - 50 dB (Indoor), 49 - 60 dB (Outdoor)
Noise Level	19 - 50 dB (Indoor), 49 - 60 dB (Outdoor)
Power Supply	208/230V, 1-phase, 60Hz