SET 1501 T - Page 28

28
Maintenance and care: Trouble shooting
Loc
The message indicates that the unit is locked. If no buttons are pressed within 5
seconds the display will return to previous fail state.
Follow the steps below in order to unlock the unit.
Step Action Description
1
UnLo (unlock function) is displayed
2
tESt (test function) is displayed
3 test is activated. The test will detect if the error is xed.
• cccc indicates that the error has been xed and the unit is un-
locked successfully.
• faIL indicates that the error is NOT xed yet and the unit will
still be locked.
If the dehumidier is not functioning correctly, shut it down immediately!
Use this table to understand the LED lights or localize and solve a possible problem/ fault:
Led
colour
Audible alarm Problem Possible cause(s) Solution
OFF
-
230V connected
but no function
Power outlet in wall is
disconnected
Restore the power
(Electrical)
-
Fuse F1 on main PCB
are blown
Replace the fuse
-
Defective power sup-
ply on main PCB
Replace main PCB
-
Disconnected/loose
230V connection
inside the unit
Check 230V con-
nections according
to wiring diagram
RED
(constant)
3 sec. initiating
beep
HP fault - Can’t
turn on /shuts
down
Defective fan Replace fan
Dirty lter Clean the lter
Dirty condenser coil Clean coil
RED
(ashing)
Double beep
every 1 min.
LP fault - Can’t
turn on /shuts
down
Leaking refrigerant
Find leak and repair
leak + rell refriger-
ant
Malfunction of
thermostatic valve
Replace thermo-
static valve
Insucient
refrigerant
Rell refrigerant
Single short
beep every 5
min.
Sensor fail -
check display
Defective sensor Replace sensor
RED/
YELLOW
(ashing)
Single short
beep
Ambient tem-
perature out of
range
Ambient temperature
too high
Cool down the
room
Ambient temperature
too low
Heat up the room
Unlock Sequence
OK
OK
!
NOTICE
LED light and
troubleshooting