Toshiba MMY-MAP0804HT8-E Service Manual page 147

(2) Test operation
Note 1
Note 2
Note 3
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START
Test operation for one indoor unit
Operation starts
Is cold air or hot air discharged?
YES
Is air circulation sufficient?
YES
Operate all the indoor units at once.
Is there adequate temperature difference
between suction and discharge?
YES
Is the operating voltage correct?
(220-240 V ±10%)
YES
Is the operating current normal?
YES
Is the operating pressure normal?
YES
Normal
manuals search engine
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)
Notes 1-3 are on the next page.
146
require up to 10 minutes to start
the operation due to the initial
communications of the system.