No
Yes
"C0" Com m unica tion Fau lt
Be twee n I ndo or a nd Ou tdo or
Units a nd Be twee n I ndoor Un it
an d Wired Cont ro ller
Whet he r t he
com m un ica tion cables
be twee n t he ma in contro l bo ar d o f th e
ou td oor u nit a nd th e in do or un it an d bet we en
th e in doo r un it an d t he wired controller
are incorrectly conn ecte d
or lo osen?
Conne ct th e co mmu nicatio n
cables properly
Yes
Replace the communica tion
cab les
The main cont rol bo ard o f t he
ou td oor u nit, th e m ain control
bo ar d of the ind oor u nit or th e
wired controller may be abnormal
Yes
Replace the main co nt rol bo ar d
of th e o utd oo r unit, th e main
con trol b oa rd of the ind oo r un it
or t he wired con tr oller
Whet he r t he
com m un ica tion cables
be twee n t he ma in contro l bo ar d o f th e
ou td oor u nit a nd th e in do or un it an d be twee n
th e in doo r un it an d t he wired controller
are discon ne cted ?
No
No
Make sure tha t th e
communication cables are
pro perly conne cte d
Whet he r t he contact be tween t he
communication cable and terminal
block is po or ?
Yes
No
Make sure tha t n o m ore tha n t wo wired cont rolle rs
are con ne cted to the ind oo r un it at the sam e time;
when t wo wired co ntro lle rs a re conn ecte d t o t he
indoo r unit at t he sam e time, make sure the y are
assig ne d with diffe re nt ad dr esse s; whe n o ne wire d
con troller is co nne cte d to th e indo or un it, make sure
it is set to th e p rimary controller
Whet he r t he nu mb er a nd ad dr esse s
of th e wired cont rollers
are incorrectly conf ig ur ed?
Yes
is generated.
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