Daikin FHYB45FV1 [113/244] 6 6 6 6

Daikin FHB35FV1 [113/244] 6 6 6 6
Troubleshooting by Remote Controller Display / LED Display Si-71A
102 Troubleshooting
6.4 Malfunction of Drain Water Level System (Float Type)
Remote Controller
Display
$6
$6$6
$6
Applicable Models
FH(Y)C, FH(Y)K, FH(Y)B, FH(Y), FAY, FVY, FUY
Method of
Malfunction
Detection
By float switch OFF detection
Malfunction
Decision
Conditions
When rise of water level is not a condition and the float switch goes OFF.
Supposed Causes
Failure of drain pump
Improper drain piping work
Drain piping clogging
Failure of float switch
Failure of indoor unit PC board
Failure of short-circuit connector
Troubleshooting
Remove the float switch
from X15A, short-circuit
X15A, and restart
operation.
Is the
drainwater level
abnormally
high?
Does the
drain pump turn
after restarting
operation?
Is a drain
pump connected
to the indoor unit
PC board?
Is there continuity?
YES
YES
YES
Is the
short-circuit
connector
connected to X15A on
the indoor unit
PC board?
NO
NO
NO
Is the float
switch connected to
X15A?
NO
NO
NO
NO
Is drain raising
mechanism
connected?
Corner or built-in
type?
NO
YES
YES
YES
YES
Does display
of malfunction
“A3”appear?
NO
YES
YES
220-240 VAC?
YES
NO
Continuity check of
short-circuit
connector
Set to“emergency”
and check the
voltage
If “A3” is detected by a PC board
which is not mounted with X15A,
the PC board is defective.
Short-circuit
connector
connection
Short-circuit
connector
replacement
Indoor unit PC
board replacement
Connect drain pump
Malfuncton of drain system
Froat switch connection
Float switch replacement
Indoor unit PC board replacement
Drain pump replacement
Indoor unit PC board replacement
(SF006)

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