Toshiba RAV-SM1603ATZ-E service manual nIndoor unit power-ONsequence, <Automatic address judgment>

In a group operation, if the indoor unit which was fed power after judgment of automatic address cannot receive regular communication from the master unit and regular communication on identical pipe within 120 seconds after power was turned on, it reboots (system reset).

→ The operation starts from judgment of automatic address (Gr construction check) again.

(If the address of the master unit was determined in the previous time, the power fed to the master unit and reboot works, the master unit may change though the indoor unit line address is not changed.)

– 122 –

Regular communication on the identical pipe (every 30 seconds) (Twin Header / sub) (When the above status changes, immediately communicates.)

(Repetition)

Regular communication between indoor units (Every 30 seconds) (Master / sub)

: Approx. 4 to 5 minutes

nIndoor unit power-ON sequence

Power ON

•The unit without power feed waits entirely

→ Waiting status is released by system start

•Reboot when power is fed on the way

<Automatic address judgment>

<By indoor unit

which receives power feed from outdoor unit>

Not normal NO

Gr construction check

Normal

∗Gr normal

1)There is no duplicated indoor unit address.

2)There is no invalid indoor unit address.

3)Individual unit and master / sub units are not intermingled.

4)Only a unit for individual.

5)A master indoor unit and 1 or more sub indoor units for Gr.

3 minutes elapse

YES

System start

<Initial communication>

Outdoor model distinction (10 seconds) (Indoor unit) Twin Master / sub distinction (Indoor unit)

Gr construction, louver information (Remote controller)

Remote controller operation is available.

(Approx. 50 seconds after power-ON)

<Usual regular communication>

Automatic address starts.

(Approx. 1 minute up to finish)

<Cautions at test run>

•Power supply/Indoor/Outdoor serial and Gr wiring: OK

•Powers of all indoor units are turned on within 3 minutes.

•Reception time for remote controller operation (After power supply was turned on)

1)When address is OK : Approx. 50 seconds

2) In AUTO address

•