Mitsubishi Heavy Industries KXZ Series User Manual

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'21 • KX-T-380
8.6 Outdoor unit noise filter PCB exchange procedure
Exchange the Noise Filter PCB (Fig.1) according to the following procedure.
1.
Exchange the PCB after elapsing 3 minutes from power OFF . (Even after the breaker
Have been turned off, some capacitors still hold high voltage. This condition is very
dangerous to touch PCB.)
Be sure that the voltage (DC) is under 30 V before harnesses
disconnect from the PCBs. (Refer to Fig.2.)
2. Disconnect the connectors and wirings from the former PCB and then exchange to
the new PCB.
3. Reconnect the connectors and wirings as before.
(Refer to table for recommended tightening torque regarding wirings.)
(
Be sure that there are not half inserted connectors .)
Precautions for Safety
• Since the following precaution is the important contents for safety, be sure to observe them.
WARNING and CAUTION are described as follows:
Indicates an imminently hazardous situation which will result in death or serious injury if
proper safety procedures and instructions are not adhered to.
Indicates a potentially hazardous situation which may result in minor or moderate injury if
proper safety procedures and instructions are not adhered to.
WARNING
• Securely exchange the PCB according to this procedure.
If the PCB is incorrectly exchanged, it will cause an electric shock or re.
• Be sure to check that the power source for the outdoor unit is turned OFF before exchanging the PCB. The
PCB exchange under current-carrying will cause an electric shock or re.
• After nishing the PCB exchange, check that wiring is correctly connected with the PCB before power distri
bution. If the PCB is incorrectly exchanged, it will cause an electric shock or re.
CAUTION
• Band the wiring so as not to tense because it will cause an electric shock
WARNING
CAUTION
PCB012D107
Parts Ref.No. Tightening torque
Noise Filter PCB
TB1-3
TB6-8
2.5 - 2.7 N・m
Fig.1 Parts arrangement
Voltage (DC) measurement points
: J101 and J102 on the Power PCB
Parts No.
CN2
T4
After elapsing
3 minutes
f
rom power OFF
CN1 TB6 TB7
T3
TB8
TB1 TB2 TB3
T1
Table Recommended tightening torque
Noise filter PCB
*Presence and shape of
electric component may
vary according to model.
Power PCB
Control PCB
Fig.2 PCB mounting position and
voltage measurement points
Never plug connectors
in half inserted
Be sure that the voltage (DC)
is under 30 V

Mitsubishi Heavy Industries KXZ Series Specifications

General

Brand	Mitsubishi Heavy Industries
Model	KXZ Series
Category	Air Conditioner
Language	English