− 167 −
No
Yes
No
Yes
No
NG
OK
Yes
No
Yes
[E16]
Sub-code: 00 : Capacity over, 01-: number of connected units
CauseCheck code Check code name
Number/capacity of connected
indoor units beyond the limit
1. There are 64 or more connected indoor units.
2. Capacity over of total connected indoor units.
3.
Incorrect setup of indoor units' horse power
Is backup
operation of outdoor unit
being set up?
Is No. of connected
indoor units correct?
Is setup of indoor
units' capacity
correct?
Is total capacity
of connected indoor
units within 135%?
For a service
P.C. board, check
outdoor capacity setup.
(Set up jumper 9, 10, 11,
and 12.)
Indoor over-capacity has
been detected during the
backup operation.
Perform setup of no detection
for capacity over. (*1)
Excessive indoor units are
connected.
Correct miswiring.
Correct capacity setup.
Set capacity of connected indoor
units within 135% of outdoor units.
Check outdoor interface
P.C. board.
(*1) To deactivate the over-capacity detection
Turn SW09 Bit 2 on I/F P.C. board of header outdoor unit to ON.
(Usually OFF)
Set up outdoor capacity.
(Refer “14 P.C. BOARD
EXCHANGE PROCEDURES”.)
Check code Check code name Cause
[E17]
Indoor units(s)-Flow Selector unit(s)
communication trouble
1. Power of indoor unit was firstly turned on.
2. Connection trouble of communication line
between Flow Selector unit and indoor unit.
3. Indoor power trouble
4. Indoor P.C.board trouble
5. Flow Selector unit address setup trouble
6. Flow Selector unit P.C. board trouble
Correct crossover between indoor
and Flow Selector unit
Correct connector connection
Check circuit wiring
Check connection status of power
supply of Flow Selector unit
(Turn on the breaker again)
No
Yes
Check P.C. board of Flow Selector
unit
Failure→Replace
Check connection status of power
supply of indoor unit
(Turn on the breaker again)
Check P.C. board of indoor unit
Failure→Replace
Is the signal
output from
Flow Selector unit
to indoor unit?
Are powers of
all indoor units
turned on?
Is power of
Flow Selector unit
turned on?
Is there
no disconnection・
connector contact failure
of harness from
terminal block of
indoor unit?
Is crossover (A/B)
correct?
Yes
No
Yes
No
No
Yes
Yes
No
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