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10.6.5. Test operation
• Check once more that the remote control cable is securely connected. (Check for loose terminals, poor contacts, connection
positions terminal block, etc.)
• If the above checks show that nothing is wrong but nothing appears on the remote controller display.
• It is possible that the remote controller was connected while the main power was still turned on. If such is the case, carry out the
following.
• Set DIP switch (SW2) No. 1 to 4. The ON position, and then turn on the main power. If the display appears after about 30 sec-
onds, turn DIP switches 2 to 4 to OFF position.
10.6.6. Self-diagnosis function
• If the “CHECK” display on the wired remote controller is blinking, the details of the problems are displayed on the timer display
screen each time the CHECK switch is pressed.
• Further details of the problem can be displayed by pressing the SET switch while the general problem details are being dis-
played.
• If the “CHECK” display on the wired remote controller is not blinking, press the CHECK switch continuously for 5 seconds or
more to display the problem details for the last problem or the problem before that.
• You can then switch between the display for the previous problem and the problem before that by pressing the UP (TIMER)
DOWN (TIMER) switches.
• Press the CHECK switch once more to return to the normal display.
• Turn on the main power.
• After 3 minutes have passed since the power was turned on, press the OFF/ON switch on the remote controller. (No operation occurs within 3
minutes after the power was turned on.)
• Press the TEST RUN switch within 1 minute of pressing the OFF/ON switch.
• Next, select the operation mode. (Be sure to select cooling mode first, and run the unit in this mode for 5 minutes
or more.)
• Press the OFF/ON switch or the TEST RUN switch to cancel test operation.
• Test operation will be cancelled automatically after 30 minutes.
If remote controller displays nothing
If “CHECK” is blinking on the timer
Example of current problem display
If “CHECK” is not blinking on the timer
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