121
TROUBLESHOOTING
● Be careful not to damage the wires. Damaged wires may cause electric shock or
short circuit or present a risk of fire.
● Once the reason that the breaker or circuit protector activated has been
removed, restore the breaker or circuit protector to its original condition. If the
product is used while the reason for activation has not yet been removed, heat
and/or fire could be generated.
● This work should be carried out by the site maintenance personnel or other
qualified professionals. Work performed by non-technical personnel can cause a
severe accident such as electric shock.
● If no improvements can be noted even after the following measures have been
taken, disengage the power and contact the point-of-purchase or the office listed
in this manual. If the power is left on while there is an abnormality, a fire, electric
shock or other serious accident can occur.
● In the event of problems not mentioned in this manual occurring or when
performing work that is not described herein, turn the power off and contact
the office listed in this manual. Carelessly performing work could lead to fires,
electrocution, or other serious accidents.
If a problem occurs, first inspect the connection of any wiring connectors.
15-1 TROUBLESHOOTING TABLE
15
TROUBLESHOOTING
PROBLEMS
CAUSE
COUNTERMEASURES
With main switch ON, no
activation.
Power is not supplied.
Securely insert the power plug into the plug
socket.
Power supply/voltage is not
correct.
Make sure that power supply/voltage is
correct.
The circuit protector functioned
due to the momentary overload.
After eliminating the cause of overload,
reinstate the AC unit’s circuit protector.
(Wait at least 1 minute and then press the
button.) (See "Circuit Protector" on the next
page.)
No sound is generated from
the speaker.
Faulty adjustment of sound
volume.
Adjust the sound volume of SW unit in the
service door.(See 9-1.)
Problem with sound circuit.
Run the sound output test.(See 9-2-5.)
15
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