Toshiba MMU-AP0057MH-E, Service Manual

Page: 68 / 107

– 68 –
Check code
Location
of
detection
De s cription S y s tem s tatu s
Problem detection
condition( s )
Check item s (location s )
• Perform au tom a tic a ddre ss
s etting a g a in a fter
di s connecting
comm u nic a tion c ab le to
th a t refriger a nt line.
I/F 01:
Indoor-o
u tdoor
comm u nic a tion
02:
O
u tdoor-o u tdoor
comm u nic a tion
A u tom a tic
a ddre ss s t a rting
pro b lem
All s top • Indoor au tom a tic a ddre ss
s etting i s s t a rted while
au tom a tic a ddre ss s etting
for eq u ipment in other
refriger a nt line i s in
progre ss .
• O u tdoor au tom a tic a ddre ss
s etting i s s t a rted while
au tom a tic a ddre ss s etting
for indoor u nit s i s in
progre ss .
E12 E12
• Check connection of
indoor-o
u tdoor
comm u nic a tion line.
• Check for tro ub le in indoor
power su pply s y s tem.
• Check for noi s e from other
device s .
• Check for power f a il u re.
• Check for defect in indoor
P.C.
b o a rd.
I/F Indoor u nit not
fo u nd d u ring
au tom a tic
a ddre ss s etting
All s top Indoor u nit c a nnot b e
detected a fter indoor
au tom a tic a ddre ss s etting i s
s t a rted.
E15 E15 —
1. Check connector indoor
u nit (CN521(red)
Applic a tion control kit
(CN 1 (red)
2. Check connection of
indoor-Applic
a tion control
kit comm u nic a tion line.
3. Check indoor P.C. b o a rd.
4. Check Applic a tion control
kit P.C. b o a rd.
Indoor u nit Comm u nic a tion
tro ub le b etween
Applic a tion
control kit a nd
indoor u nit
Indoor-
Applic
a tion
control kit
comm
u nic a tion
pro b lem
S top Di s pl a yed when pro b lem i s
detected
E11 —
• Check remote controller
wiring.
• Check indoor power
su pply
wiring.
• Check P.C.
b o a rd s of
indoor u nit s .
Indoor u nit Pro b lem in
comm u nic a tion
b etween indoor
he a der a nd
follower u nit s
S top of
corre s ponding
u nit
Periodic comm u nic a tion
b etween indoor he a der a nd
follower u nit s c a nnot b e
m a int a ined.
E1 8 — —
O u tdoor he a der u nit i s
o u tdoor u nit to which indoor-
o u tdoor
tie c ab le (U1,U2) i s
connected.
• Check connection of
indoor-o
u tdoor
comm u nic a tion line.
• Check for defect in o u tdoor
P.C. b o a rd (I/F).
I/F 00:
No he
a der u nit
02:
Two or more
he
a der u nit s
Pro b lem in
n u m b er of
o u tdoor he a der
u nit s
All s top • There a re more th a n one
o u tdoor he a der u nit s in
one line.
• There i
s no o u tdoor he a der
u nit in one line.
E1 9 E1 9
Di s connect inter-line tie
c ab le in a ccord a nce with
au tom a tic a ddre ss s etting
method expl a ined in
“Addre ss s etting” s ection.
I/F 01:
Connection of
o
u tdoor u nit
from other line
02:
Connection of
indoor
u nit
from other line
Connection to
other line fo
u nd
d u ring
au tom a tic
a ddre ss s etting
All s top Eq u ipment from other line i s
fo u nd to h a ve b een
connected when indoor
au tom a tic a ddre ss s etting i s
in progre ss .
E20 E20
• Check c a p a citie s of indoor
u nit s connected.
• Check com b ined HP
c a p a citie s of indoor u nit s .
• Check HP c a p a city
s etting s of o u tdoor u nit s .
• Check No. of indoor u nit s
connected.
• Check for defect in o
u tdoor
P.C. b o a rd (I/F).
I/F 00:
Overlo
a ding
01-:
No. of
u nit s
connected
Too m a ny
indoor u nit s
connected
All s top • Com b ined c a p a city of
indoor u nit s exceed s 135%
of com b ined c a p a city of
o u tdoor u nit s .
Note:
If thi s code come s up
after backup s ettin g for
outdoor unit failure i s
performed, perform “No
overloadin g detected”
s ettin g .
<“No overlo a ding detected”
s etting method>
T u rn on S W0 9 /Bit 2 on I/F
P.C. b o a rd of o u tdoor
he a der u nit.
• More th a n 64 indoor u nit s
a re connected.
E16 E16
Main
remote
controller
Outdoor 7- s e g ment di s play
Check
code
S ub-code