Toshiba MMD-AP0071SH-C Service Manual page 86

Check code Check code name
[E16] / [89] Connected indoor units
capacity over
(d07 / AI-NET)
Sub-code: 00 : Capacity over 01 : ~ : Number of connected indoor units
Is backup operation of outdoor unit being set up?
NO
Is No. of connected indoor units correct?
YES
Is setup of indoor unit HP correct?
YES
Is total capacity of connected
indoor units within 135%? ( 1)
YES
For a service P.C. board, check outdoor HP setup.
(Set up jumper 9, 10, 11, and 12.)
NG
Check outdoor interface P.C. board A'ssy.
Cause of operation
1. There are 48 or more connected indoor units.
2. Capacity over of total connected indoor units.
3. Incorrect setup of indoor/outdoor capacity
YES
Perform setup of no detection
for capacity over.
NO
Excessive indoor units are connected.
Correct miswiring.
NO
Correct HP setup.
NO
Set capacity of connected
indoor units within 135% of outdoor units.
OK
Set up outdoor HP.
(Refer "How to exchange interface P.C. board".)
(∗ ∗ ∗ ∗ ∗ 1) When capacity of the outdoor unit is 12HP ,
up to the maximum capacity 120% of
indoor units can be connected.
Check code Check code name
[E18] / [97/99] Communication error between
indoor header and follower
(d07 / AI-NET)
NO
Are remote controller
inter-unit wires (A/B) normal?
YES
Is there any disconnection of YES
connector or wiring from terminal block
of indoor unit?
NO
NO
Is a group control operation?
YES
NO
Are powers of
all indoor units turned on?
YES
Check indoor address.
Correct indoor address.
Check code Check code name
[E19] / [96] Header outdoor units quantity error
(d07 / AI-NET)
Sub-code: 00: No header unit 02: Two or more header units
Are not communication lines (U1, U2)
YES
between indoor and outdoor connected
to multiple outdoor units?
NO
NO
Is communication line between indoor and
outdoor connected to one unit per 1 system?
YES
Check I/F board.
Cause of operation
Regular communication between indoor header
and follower is unavailable.
Correct remote controller
inter-unit wire.
Correct connection of connector.
Check circuit wire.
Check power connection status
of indoor unit.
Check indoor P.C. board.
Failure Replace
Cause of operation
1. Misconnection of inter-unit cable between
indoor and outdoor
2. Outdoor I/F P.C. board error
Connect communication line between indoor
and outdoor to one unit per 1 system.
Connect communication line between indoor
and outdoor.
Reference)
When the power supply of the outdoor unit is firstly
turned on, the check code [E19 00] is displayed until the
power supplies of the indoor units are turned on. However
it is not an error. If the power supplies of the indoor units
are turned on, the check code is automatically reset.