Troubleshooting - Mitsubishi Electric VL-50S2-E Betriebsanleitungen

8. Troubleshooting

Inspect the unit if any of the following problems occurs. If the problem is not listed below, or the problem
persists after inspection, shut off the circuit breaker on the distribution board or, for VL-50S
the power plug from the wall outlet, and then contact your dealer.
Model Problem
Unit does not operate.
The unit is louder.
The unit is noisy.
Less air than normal is
coming from the unit.
The operation lamp is not
bright.
Small insects get inside.
No air is coming from the unit.
Not much air is coming
from the unit.
VL-50S -E
2
VL-50ES -E
2
The panel will not close.
The incoming air feels
cold.
When operating the
shutter knob, there is a
noise inside.
Cold air or wind comes in
more than usual when the
unit is stopped.
The unit is loud.
Cause
No power to main unit.
The panel or outside air filter is
not attached securely.
The outside air filter or exhaust air
filter is clogged.
The outside air filter or exhaust air
filter is clogged.
When the operation mode is
changed from HI to LO, the lamp
becomes dim.
Small particles and insects may
pass through.
The Lossnay is a heat-exchanging ventilator, so the volume of air will be
lower than with an ordinary fan. This is normal.
The shutter is closed.
The Lossnay Core or outside air filter is
not mounted correctly. (A component is
out of position or inserted backwards.)
The outside air temperature has
dropped.
Cold air may enter inside if inside
the room is in negative pressure
for a reason such as that the
range hood fan is operating.
This sound is the operation sound
of the shutter inside the product.
Is the shutter being kept open?
The shutter is closed.
Eng-10
Check the following
Check the power plug. (VL-50S
Check whether a breaker has tripped.
Check whether a power failure has occurred.
Reattach the panel or filter.
Clean the filter.
Clean the filter.
This is not a malfunction.
To enhance trapping efficiency,
purchase a high performance dust filter.
Open the shutter.
Mounted the component correctly.
Turn the unit off temporarily and close
the shutter, as dictated by the situation.
Operate the unit by setting the shutter
position to Exhaust only mode.
This is not a malfunction.
Use the unit in Exhaust only mode.
This is not a malfunction.
Move the shutter knob to the CLOSE
position.
Open the shutter.
-E, remove
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-E only)
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