6TQWDNGUJQQVKPI
dynamic
Be cautious during installation and maintenance. Do operation following the regulations to avoid electric shock and casualty or
even death due to drop from high attitude.
*
*
Static maintenance is the maintenance during de-energization of the air conditioner.
For static maintenance, make sure that the unit is de-energized and the plug is disconnected.
maintenance is the maintenance during energization of the unit.
Before dynamic maintenance, check the electricity and ensure that there is ground wire on the site. Check if there is electric ity on
the housing and connection copper pipe of the air conditioner with voltage tester . After ensure insulation place and the safety , the
maintenance can be performed.
Take sufficient care to avoid directly touching any of the circuit parts without first turning of f the power.
At times such as when the circuit board is to be replaced, place the circuit board assembly in a vertical position.
Normally,diagnose troubles according to the trouble diagnosis procedure as described below.(Refer to the check points in
servicing written on the wiring diagrams attached to the indoor/outdoor units.)
Precautions when inspecting the control section of the outdoor
unit :
A large-capacity electrolytic capacitor is used in the outdoor unit controller
(inverter).Therefore,if the power supply is turned off,charge(charging
voltage DC380V )remains and discharging takes a lot of time..
After turning off the power source,if touching the charging section be-
fore discharging, an electrical shock may be caused.
Please open the outdoor unit after the unit is power off for 20min.
(1)Confirmation of Power Supply
Confirm that the power breaker operates(ON) normally;
(2)Confirmation of Power Voltage
Confirm that power voltage is AC 380-415 ± 10%.
If power voltage is not in this range, the unit may not operate normally .
NO. Troubles hooting procedure
1
Confirm ation
2
Judgement by Flas hing LED of Indoor/Outdoor Unit
3
How to Check sim piy the main part
7URXEOHVKRRWLQJ
3UHFDXWLRQVEHIRUH3HUIRUPLQJ,QVSHFWLRQRU5HSDLU
-XGJHPHQWE\)ODVKLQJ/('RI,QGRRU2XWGRRU8QLW
&RQ¿UPDWLRQ
