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10.4.10. As for timer output
• Connect the timer cord to connector (CN-TIMER) on print circuit board.
10.4.11. Precautions in test run
• The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner may not operate.
• Test operation can be carried out using the remote control unit or at the outdoor unit. (If carrying out test operation at the outdoor
unit, refer to “TEST OPERATION” in the outdoor unit installation manual.)
• If using the remote control unit to carry out test operation, follow the procedure given below.
• First, press the OFF/ON ( ) button.
• Then press the TEST RUN button within 1 minute of pressing the OFF/ON ( ) button.
• Next, select the operation modes.
• The temperature of the indoor unit pipes will be shown on the temperature setting dis-
play. (At the start of the test operation, it may take up to 1 minute for air conditioner num-
ber, switching time and other displays to appear.)
• After operation modes have been selected, stop the compressor for a moment.
• Press the OFF/ON ( ) button of the TEST RUN button once more to cancel test opera-
tion mode.
NOTE 1 These units are equipped with connection error prevention circuits. If the units do not operate, it is possible that the connection
error prevention circuits have operated. In such cases, check that the Indoor/outdoor unit connection wire (connected to terminals
, and are connected correctly. If they are connected incorrectly, connect them correctly. Normal operation should then
commence.
NOTE 2
Do not short the remote control unit wires to each other. (The protection circuit will be activated and the units will not operate.)
Once the cause of the short is eliminated, normal operation will then be possible.
NOTE 3
When running the units in heating mode during test operation, be sure to run the units in cooling mode first before selecting this
mode. If heating mode is selected first, it may cause problems with operation of the compressor. (Heat pump model only.)
NOTE 4
Test operation should be carried out for a minimum of 5 minutes. (Test operation will be cancelled automatically after 30 minutes.)
NOTE 5
Test operation mode should always be cancelled once test operation itself has been completed.
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