Mitsubishi Electric Lossnay VL-220CZGV-EB Handbook page 13

Lossnay does not work after installation
is completed.
Lossnay does not work in the trial op-
eration after installation is completed, or
Lossnay works abnormally during use.
The remote controller does not work
after installation is completed.
Operations such as ON/OFF, fan speed
or ventilation mode switching are
disabled on the remote controller after
installation 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.
Water leaks from the Lossnay unit.
7-2 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, and TAB2)?
7 Is there a faulty connection on the reactor terminals
(TAB3 and TAB4)?
8 Are the power supply indicator lamps (LED4 and
LED6, red) lit?
Check Item
(1) Failure mode 1: Lossnay does not work, or
(2) Failure mode 2: The remote controller does not
(3) Failure mode 3: Operations on the remote control-
(4) Failure mode 4: Lossnay does not work properly.
(5) Failure mode 5: Error code and LED display
(6) Failure mode 6: Water leaks from the Lossnay unit.
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 lead wires securely.
Check the above items.
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Lossnay works abnormally.
work.
ler are disabled.
Corrective action