Daikin FTKS50BVMB, Service Manual

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SiEN18-622 Troubleshooting for SkyAir Indoor Unit
Troubleshooting 349
5.14 Malfunction of Field Setting Switch
Remote Control
Display
UA
Applicable
Models FFQ, FCQ, FBQ, FHQ
Method of
Malfunction
Detection
Malfunction
Decision
Conditions Incorrect field setting
Supposed
Causes „ Indoor-Outdoor (BP) transmission line
„
Faulty remote control wiring
Troubleshooting
NO
NO
NO
YE S
YE S
YE S
YE S
NO
YE S
NO
NO
YE S
YE S
NO
YE S
NO
(Q0401)
I s the
remote control
connected to one
or more indoor
u nit s ?
I s the
remote control wiring
j u mped b etween indoor
u nit s ?
I s the field s etting
for p a ir / twin
s y s tem correct?
Do the
microcomp u ter
norm a l monitor s
HAP on a ll indoor
u nit PCB b link?
T u rn the power su pply off once,
a nd ba ck on to re s t a rt.
Doe s the s y s tem
cond u ct norm a l
oper a tion?
Are wiring s
b etween indoor a nd
BP u nit correctly
connected?
I s 220 ~ 240
VAC b etween No.1
a nd 3 of X2M termin a l
(indoor u nit)?
Are
the wiring s
b etween indoor
a nd BP u nit
correctly
connected?
Connect the remote control
correctly.
Remove the j u mper.
S et correctly.
Connect correctly.
Check the power su pply
s y s tem in s ide the indoor u nit.
Co u ld b e incorrect wiring.
Check a g a in.
Connect correctly.
Repl a ce the indoor u nit
PCB.
Norm a l
Caution
Be su re to t u rn off power s witch b efore connect or di s connect connector,
or p a rt s d a m a ge m a y b e occ u rred.