Samsung AC018JN4DCH/AA User Manual

Troubleshooting
Samsung Electronics 4-25
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Continued
Yes
After replacing the main PBA and resetting the
power, check everything is normal.
Connect the power supply.
(Switch off power to the terminal box!)
1. Connect the power supply.
2. Check whether the power of the outdoor unit
is supplied by powering on the terminal box.
No
No
Check the power parts.
(Switch off power to the terminal
box before inspection!)
1. Is there a fault with a fuse??
(Short-Normal, Open-Fault)
2. When the bridge diode is measured with +, -
(output voltage), does the voltage exceed 290 Vdc?
3. Is the power supply voltage 12V?
4. Is there a fault with a fuse of EMI PBA?
(Short-Normal, Open-Fault)
Fan Motor Connector
After separating and resetting
the power, check everything is normal.
(Separate the connector after turning off the
power of the terminal box!
When detaching and attaching the connector
during power supply,
the motor can be damaged.)
ױIf it is normal,
replace the fan motor.
Fuse
Fan Motor
Connector
12V power
Fuse
Bridge Diode
EMI PBA Fuse
Outdoor main PBA checking part
Outdoor inverter PBA checking part
Outdoor EMI PBA checking part

Samsung AC018JN4DCH/AA Specifications

General

Brand	Samsung
Model	AC018JN4DCH/AA
Category	Air Conditioner
Language	English