Mitsubishi Lossnay LGH-150RVXT-E Handbook page 11

Lossnay does not work after installation is
completed.
Lossnay does not work in trial operation
after installation is completed, or Lossnay
stops working during use.
The remote controller does not work after
installation is completed.
Operations such as ON/OFF, fan speed or
ventilation mode switching are not possi-
ble on the remote controller after installa-
tion is completed.
Lossnay does not work properly after
installation is completed.
• An error code is displayed on the remote
controller.
• LEDs on the circuit board blink or light.
6-2 Check Details
(1) Failure mode 1: Lossnay does not work.
Initial Check Items
Check the following details if Lossnay does not work after installation is completed.
1 Power supply
No.
1 Is the main power supply on?
2 Is the current capacity of the power supply isolator
appropriate?
3 Is the designated cable used for the power supply
cable?
4 Is the specified power supply supplied to the power
supply terminal (TM1)?
220-240 V/50 Hz, 220 V/60 Hz
5 Is the power supply cable incorrectly wired, is there
a faulty connection or are screws loose?
6 Is there a faulty connection on the power supply
terminals (TM1, TAB1, TAB2, and TAB5)?
7 Is there a faulty connection on the reactor terminals? Connect the lead wires securely.
8 Is the jumper connected to TAB3 and TAB4?
9 Are the power supply indicator lamps (LED4 and
LED6, red) lit?
Check LEDs6 on all the power circuit boards.
Check Item
(1) Failure mode 1: Lossnay does not work.
(2) Failure mode 2: The remote controller does not
(3) Failure mode 3: Operations on the remote con-
(4) Failure mode 4: Lossnay does not work properly.
(5) Failure mode 5: Error code and LED display
Turn the main power supply on.
Use an appropriate power supply isolator.
Use the designated cable.
Supply the designated power supply.
Connect the cable securely and correctly, and
tighten the screws firmly.
Connect the lead wires securely.
Connect the jumper properly.
Check the above items.
─ 11 ─
work.
troller are not possible.
Corrective action