Troubleshooting; Initial Troubleshooting; Checking Of Electrical Wiring And Power Supply; Checking Of Rotary Switch And Dip Switch Setting - Hisense Hi-FLEXi S Series Technical, Installation, Maintenance

1. Troubleshooting

1.1 Initial Troubleshooting

1.1.1 Checking of Electrical Wiring and Power Supply

Check the following items if there is abnormality to the activation of air conditioner.
No.
1 Is power supply breaker or fuse blown out?
2 Is voltage at secondary side of transformer correct?
3 Is wiring firmly fixed or correctly connected?
Refer to installation manual for details.

1.1.2 Checking of Rotary Switch and Dip Switch Setting

TURN OFF all the power supplies before setting.
Without turning OFF, the switches do not work and the contents of the setting are invalid. However, DSW4-No.1,2, 4 can be
operated during power supply is ON. The mark of " ■ " indicates the position of dip switches.
● By using switch DSW4, the unit is started or stopped after 10 to 20 seconds after the
switch is operated.
● Number this outdoor unit to distinguish from other outdoor units for service and
maintenance. And write the number in the space right.
Inverter PCB and Fan Controller
1
*
NOTE: 1)This setting is only effective for single-compressor and double-fan system.
2)This setting is only effective for double-compressor and double-fan system.
Check Item
2
*
Check the voltage (secondary side) of the breaker and also check the
conductivity of fuse by a tester.
Disconnect connection at the secondary side of the transformer and
measure voltage by a tester.
"Check that the following wiring connections on O.U./I.U. PCBs are not
loosened.
• The connections for thermistors
• The connections for the remote control switch cable
• The connections for transformer
• Each connection for power line
Check that the wiring connections on O.U./I.U. PCBs are not loosened
or mis-connected on the site according to "Electrical Wiring Diagram" in
Design Chapter."
NOTE
105
Troubleshooting
Check Method