Toshiba MMU-AP0091H service manual Wireless remote controller, Test operation from outdoor unit

M4 × 25 screw (2 pieces)

Wireless remote controller

(Except 4-way Air Discharge Cassette type, Under Ceiling type and 1-way Air Discharge Cassette type (2 Series))

1

2

Remove the screw which fixes the name plate to the receiver part on the wireless remote controller.

Remove the nameplate of the receiver section by inserting a minus screwdriver, into the notch at the bottom of the plate, and set the Dip switch to [TEST RUN ON].

Execute a test operation with ON / OFF button on the wireless remote controller.

•, , and LED flash during test operation.

•Under status of [TEST RUN ON], the temperature adjustment from the wireless remote controller is not available.

Ensure that this is not used for normal operation as equipment damage may occur.

3 Use either COOL or HEAT operation mode for a test operation.

Note) The outdoor unit does not operate for approx. 3 minutes. After power-ON and after operation has stopped.

4 After the test operation finished, stop the air conditioner using the wireless remote controller, and return the Dip switch to its original setting.

(A 60-minute timing function is designed into the sensor section in order to prevent a continuous test operation.)

Notch

Small screw

Receiver unit Spacer

Nameplate

Wireless remote controller (4-way Air Discharge Cassette type)

1 Turn OFF the power to the air conditioner.

Remove the adjust corner cap and the attached with sensor section from the ceiling panel. For removal method, follow to the installation instructions attached to the ceiling panel.

(Be careful to handling the sensor section because cables are connected to the sensor.)

Remove the sensor cover from the adjust corner cap. (1 screw)

2 Change Bit [1: TEST] of the switch [S003] on the sensor P.C. board from OFF to ON.

Mount the sensor cover and attach the adjust corner cap with sensors to the ceiling panel.

Turn on power of the air conditioner.

3

Push	ON / OFF	button of the wireless remote controller, and select an operation mode [COOL]
or [HEAT] with		MODE button. (All the display lamps of the wireless remote controller sensor

section flash during the test operation.)

•Do not use operation mode other than [COOL] or [HEAT].

•Errors are detected as usual.

S003 Bit 1 : OFF ON

4

5

When the test operation has finished, push	ON / OFF
button to stop the operation.

Turn off the power to the air conditioner. Sensor cover

Change Bit [1] of the switch [S003] on the

sensor P.C. board from ON to OFF.

Adjust corner cap

Attach the adjust corner cap with sensors to the ceiling panel.

4 3 2 1

ON

Sensor P.C. board

Test operation from outdoor unit

Refer to “8-7-2. Function of Start/Stop the Indoor Unit from Outdoor Unit” in “8-7. Service Support Function”.

NOTE) The test operation returns to normal operation after 60 minutes have passed.

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