Daikin FTKS50BVMB, Service Manual

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SiEN18-622 Troubleshooting for Outdoor Unit
Troubleshooting 403
7.37 Malfunction of System, Refrigerant System Address
Undefined
Remote Control
Display
UH
Applicable
Models
All indoor unit models
All outdoor unit models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes „
Improper connection of transmission wiring between outdoor unit and outdoor unit outside
control adapter
„
Defect of indoor unit PCB
„
Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
(V2 83 1)
NO
YE S
YE S
NO
YE S
NO
Doe s a m a lf u nction occ u r?
NO
YE S NO
Doe s
a m a lf u nction
occ u r even a fter 12
min u te s el a p s e s from the
time when electricity i s
introd u ced to indoor
a nd o u tdoor
u nit s ?
YE S
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.
I s
electricity
b eing introd u ced
for the fir s t time a fter
in s t a ll a tion or a fter a n
indoor or o u tdoor u nit
PC b o a rd h as b een
repl a ced?
I s
indoor - o u tdoor a nd
o u tdoor - indoor u nit
tr a n s mi ss ion wiring
norm a l?
After fixing incorrect wiring,
p
us h a nd hold the RE S ET
bu tton on the o u tdoor u nit
PC b o a rd for 5 s econd s
Doe s a
"UH" m a lf u nction occ u r
for a ll indoor u nit s in the
s y s tem?
After fixing incorrect wiring,
p
us h a nd hold the RE S ET
bu tton on the m as ter o u tdoor
u nit PC b o a rd for 5 s econd s .
* The u nit will nog r u n for u p
to 12 min u te s .
Repl a ce indoor u nit PC b o a rd.
Repl a ce o u tdoor u nit PC
b o a rd (A1P).
Norm a l
Norm a l