Toshiba RAV-SM1104ATJP-E Installation Manual Download Page 40

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Existing piping

The following settings are required when using a pipe Ø19.1 mm as the existing piping at the gas pipe side.

Steps taken to support existing piping

1. Set the circuit breaker to the ON position to turn on the power.
2. Check that the LED displays are placed in their initial status. If not, place them in the initial status.
3. Hold down SW01 for at least 5 seconds, and check that D804 flashes slowly. (Fig. 5)
4. Press SW01 four times to set the LED displays (D800 to D805) to the “LED displays for existing piping settings”

shown below. (Fig. 6)

(Fig. 5)

: ON,

: OFF,

: Slow flashing

(Fig. 6)

ON, :

OFF, :

Rapid

flashing

5. Press SW02 to set D805 to rapid flashing. (Each time SW02 is pressed, D805 is switched between rapid flashing

and OFF.) (Fig. 7)

6. Hold down SW02 for at least 5 seconds, and check that D804 flashes slowly and that D805 lights. (Fig. 8)

(Fig. 7)

: ON,

: OFF,

: Rapid flashing

(Fig. 8)

: ON,

: OFF,

: Slow flashing

7. Hold down SW01 and SW02 simultaneously for at least 5 seconds to return the LED displays to the initial status.

The existing piping is now supported by taking the above steps. In this status, the heating capacity may decrease
during heating depending on the outside air temperature and indoor temperature.

* If there is any reason to doubt whether establishing support was successful in the course of this operation, hold

down SW01 and SW02 simultaneously for at least 5 seconds to return to the initial status, and then repeat the

setting steps.

LED displays indicated when step 3 is taken

D800

D801

D802

D803

D804

D805

LED displays for existing piping settings

D800

D801

D802

D803

D804

D805

LED displays indicated when step 5 is taken

D800

D801

D802

D803

D804

D805

LED displays indicated when step 6 is taken

D800

D801

D802

D803

D804

D805

How to check the existing piping settings

You can check whether the existing piping settings are enabled.
1. Check that the LED displays are placed in their initial status. If not, place them in the initial status.
2. Hold down SW01 for at least 5 seconds, and check that D804 flashes slowly. (Fig. 9)
3. Press SW01 four times to set the LED displays (D800 to D805) to the “LED displays for existing piping settings”

shown below. If the setting is enabled, D802 lights and D804 and D805 flash rapidly. (Fig. 10)

4. Hold down SW01 and SW02 simultaneously for at least 5 seconds to return the LED displays to the initial status.

(Fig. 9)

: ON,

: OFF,

: Slow flashing

(Fig. 10)

: ON,

: OFF,

: Rapid flashing

When restoring the factory defaults

To restore the factory defaults in situations such as when relocating the units, follow the steps below.
1. Check that the LED displays are placed in their initial status. If not, place them in the initial status.
2. Hold down SW01 for at least 5 seconds, and check that D804 flashes slowly. (Fig. 11)
3. Press SW01 14 times to set the LED displays (D800 to D805) to the “LED displays restored to factory defaults”

shown below. (Fig. 12)

(Fig. 11)

: ON,

: OFF,

: Slow flashing

(Fig. 12)

: ON,

: OFF,

: Rapid flashing

4. Hold down SW02 for at least 5 seconds, and check that D804 flashes slowly. (Fig. 13)
5. Hold down SW01 and SW02 simultaneously for at least 5 seconds to return the LED displays to the initial status.

(Fig. 13)

: ON,

: OFF,

: Slow flashing

LED displays indicated when step 3 is taken

D800

D801

D802

D803

D804

D805

LED displays for existing piping settings