Before Receiving Repair Requests; Service Inspection List - Mitsubishi Electric Lossnay VL-220CZGV-EB Handbook

8. Before receiving repair requests

Frequently asked question
Lossnay does not operate. 1 If the breaker on the distribution board is turned off, turn it on.
Operating noise has in-
creased.
The air volume is low.
Bubbling sound is heard
from the Lossnay unit.
Dew condensation water is
pooled in the filter case.
The loudness of the opera-
tion sound differs in each
room.
The wind sometimes stops. The system is operating in the protective mode (intermittent operation).
The air supply wind is cold. The air supply wind becomes cold depending on the outside air condition.
The ventilation mode can-
not be switched.
* Only when the air
duct switching damper
(P-133DUE-E) is installed.

9. Service inspection list

Location
Is the power supply wire connected to the terminal block securely?
Electric
wiring
Is the wiring correct?
Is the main unit mounted securely?
Is the earth cable installed?
Does the product operate as described in the instruction manual when operat-
Product
ing the remote controller?
Are the air supply fan and air exhaust fan operating?
Does the product operate without abnormal vibrations or noise?
2 If the ON/OFF button on the remote controller is set to OFF, set it to ON. It
takes one to four minutes for the remote controller to be fed with power after
turning the Lossnay unit ON.
1 If the filters are not securely installed, re-install them.
2 If the filters are clogged, clean them.
3 When the outdoor hood is blocked, remove the obstacle.
If the filters are clogged, clean them.
Dew condensation water in the drain pipe is sometimes sucked into wind pres-
sure of the Lossnay unit and may not be easily discharged.
Operate Lossnay at the low fan speed, and dew condensation water in the drain
pipe will be easily discharged and the sound will stop.
Dew condensation water may be pooled depending on the use environment.
It is normal.
The loudness of the sound may be different depending on the pipe length in
each room. It is normal.
It is normal. (See the Lossnay instruction manual.)
It is normal.
When the outdoor temperature is 8°C or lower, the ventilation mode is fixed to
the Heat recovery mode.
Inspection
─ 29 ─
Response
Check Result