Hisense AVWT-192FFFH User Manual

133
Troubleshooting
Alarm
Code
04
Abnormal Transmitting between Inverter PCB and Outdoor Unit PCB
● The RUN indicator (Red) is ashing
● The indoor unit number, the alarm code, the unit model code and the connected number of indoor units are displayed on
LCD. Meanwhile, the indoor unit number and the alarm code are displayed on the 7-segment of outdoor unit PCB.
★
This alarm code is indicated when abnormality continues for 30 seconds after normal transmitting between the outdoor
unit PCB and inverter PCB, and also abnormality continues for 30 seconds after the micro-computer is automatically
reset. The alarm is indicated when the abnormal transmitting continues for 30 seconds from starting of the outdoor unit.
Cause Check Item
Action
(Turn OFF Main Switch)
Phenomenon
Check continuity.
Check for looseness
of connection screws.
Replacing Wires,
Repairing and
Tightening Screws
Check connection Nos.
Correctly Connect
Wires
Check connections.
Repair wiring
connections.
Replace PCB if faulty.
Replace power fuse,
power transistor, and
diode module.
Replace incoming
current limit resistance.
Between O.U. PCB
and inverter PCB
Disconnected
Wires, Insufficient
Contacting or
Incorrect
Connection
Check continuity of
wires.
Check for looseness
of connection screws.
Check connection No.
Replacing wires,
repairing, tightening
screws and incorrect
wiring.
Power Supply Wiring
for Outdoor Unit
Disconnected Wires
to PCB
Faulty PCB
Melted Power Fuse
Disconnected
Incoming Current Limit
Resistance
Check conductivity
of power fuse, power
transistor, diode module.
Check resistance of
incoming current limit
resistance.
Disconnected Wires
Insufficient Contacting
Incorrect Wiring
Incorrect Wiring
Faulty O.U. PCB
and inverter PCB
Faulty Electrical
Components
Power Fuse,
Resistance
Yes
Disconnect CN14
of O.U. PCB.
Check the wiring
between O.U. PCB
and Inverter PCB.
Faulty O.U. PCB.
No
Is LED2 (green) on
O.U. PCB flashing?
Yes
No
Is LED2 (green) on
O.U. PCB flashing?
Check Inverter PCB.
Check Inverter PCB.
O.U. PCB: Outdoor Unit PCB
<Outdoor Unit PCB Display Indication>
Abnormal Transmitting
of Inverter

Hisense AVWT-192FFFH Specifications

General

Brand	Hisense
Model	AVWT-192FFFH
Category	Air Conditioner
Language	English