Mitsubishi Electric Lossnay VL-250CZPVU-L-E Handbook page 26

Heat recovery ventilator
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[3] Monitor output signal cable
No.
1 Is the signal cable wired by multicore cable?
Are the signal cables and transmission cables wired in the
2
same piping duct?
Is the power supply cable wired at least 50 mm away from
3
signal cables?
Are the signal cable connected to the designated terminal
4
blocks? (Table [3]-1)
Are the signal cables incorrectly wired, is there a faulty
5
connection or are screws loose?
Is the output capacity of the signal cable within rating?
6
(Table [3]-1)
Table [3]-1 Monitor output specifications
Terminal block
Function Name
(Factory default)
(Note 1)
Signal specifications
Terminal rating
Min. applicable load
(Note 1) Output can be changed with function settings.
[4] Function setting
No.
Check item
1 Are the function selection switch on the
circuit boards set correctly to suit the
required application?
2 Is the supplied controller used?
3 When the controller is used, are the
function selections set correctly to suit
the required application?
[5] LED Indications on the circuit board
No.
LED
Contents
1
LED1
Lossnay main unit
(green)
error indicator
2
LED2
M-NET system
(red)
Error indication
3
LED3
Controller power
(green)
supply indicator
4
LED4
Control circuit board
(red)
power supply indicator
5
LED6
Power circuit board
(red)
power supply indicator
Check item
TM3 [9] [10]
Operation monitor
Set the function selection switch (SW2) on the control circuit
board correctly.
Use the supplied controller.
The Lossnay controllers sold separately (PZ-61DR-E,
PZ-43SMF-E, etc.) cannot be used.
Set the function selections correctly.
After setting the controller functions, operating the model selec-
tion switch (SW6) on the control circuit board resets the settings
to the initial settings.
Check item
Blinking: Starting up, error occurred Refer to Failure mode 5.
Lit: During delay operation
Unlit: Other than above
Lit: No M-NET connection
information
Lit: Power supplied to the
controller.
Check that this LED is lit.
Check that this LED is lit.
─ 26 ─
Wire the cable using a 2-core cable.
Wire the signal cables away from the trans-
mission cables.
Wire the cables at least 50 mm away from
the other cables.
Connect the cables to the specified terminal
blocks.
Connect them securely, and tighten the
screws firmly.
Use the signal cable within rating.
TM3 [7] [10]
By-pass ventilation monitor
Volt-free a contact
24 V DC / 1 A
5 V DC / 100 mA
Corrective action
The unit operates after the delay time
has passed.
It is normal.
It is normal.
It is normal.
The LED lights while power is being
supplied to the control circuit board.
The LED lights while power is being
supplied to the power circuit board.
(Never touch the board while power is
supplied to avoid an electric shock.)
Corrective action
TM3 [8] [10]
Malfunction monitor
Corrective action

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