Daikin FTKS50BVMB, Service Manual

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Troubleshooting for Outdoor Unit SiEN18-622
402 Troubleshooting
7.36 System is not Set yet
Remote Control
Display
UF
Applicable
Models
All indoor unit models
All outdoor unit models
Method of
Malfunction
Detection On check operation, the number of indoor units in terms of transmission is not corresponding to
that of indoor units that have made changes in temperature.
Malfunction
Decision
Conditions The malfunction is determined as soon as the abnormality aforementioned is detected through
checking the system for any erroneous connection of units on the check operation.
Supposed
Causes „ Improper connection of transmission wiring between indoor-outdoor units and outdoor-
outdoor units
„
Failure to execute check operation
„ Defect of indoor unit PC board
„ Stop valve is left in closed
Troubleshooting
Note: Wiring check operation may not be successful if carried out after the outdoor unit has been off
for more than 12 hours, or if it is not carried out after running all connected indoor units in the
fan mode for at least an hour.
Caution
(V2 83 0)
I s
indoor - o u tdoor
a nd o u tdoor - o u tdoor u nit
tr a n s mi ss ion wiring
norm a l?
Repl a ce indoor u nit PC b o a rd.
Wiring check oper a tion m a y
not h a ve b een c a rried o u t
su cce ss f u lly.
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 not r u n for u p to
12 min u te s .
YE S
NO
YE S
NO
NO
YE S
I s the
check oper a tion
c a rried o u t?
I s indoor-
o u tdoor a nd o u tdoor-o u tdoor
u nit tr a n s mi ss ion
wiring norm a l?
Open s top v a lve.
YE S
NO
Are the s top
v a lve s opened?
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.