Toshiba MMY-MAP0804HT8JP Service Manual page 145

(2) Test operation
Test operation for one indoor unit
Is cold air or hot air discharged?
Operate all the indoor units at once.
Note 1
Is there adequate temperature difference
between suction and discharge?
Is the operating voltage correct?
Note 2
Is the operating current normal?
Note 3
Is the operating pressure normal?
START
Operation starts
YES
Is air circulation sufficient?
YES
YES
(220-240 V ±10%)
YES
YES
YES
Normal
Notes 1-3 are on the next page.
Refer to "Test operation procedure"
of the indoor remote controller.
The operation does not start for
approximately 3 minutes after
powering-on or stopping operation.
Note: After powering-on, it may
NO
Check the operating status of the
compressor.
NO
Check the direction of the louver.
Execute a test operation using
"Start/Stop Function of the Indoor
Unit from Outdoor Unit" in the
"Service Support Function" section.
NO
• Check power voltage of
NO
the main power supply.
• Check the cable size of
the power supply.
NO
• Check the temperature load of the
indoor/outdoor units.
• Check the pipe length and refrigerant
amount.
• Check the operating Hz of the
NO
compressor.
• Check the operation of the outdoor
fans.
• Check for abnormal sound in the
outdoor unit.
(Abnormal sound, etc. of the
compressor and other components)
– 144 –
require up to 10 minutes to start
the operation due to the initial
communications of the system.