Fan Speed Adjustment; The Smart Way To Use; Caring For The Machine - Mitsubishi Electric PVFY-P12 NAMU-E Operation Manual

3.4.

Fan speed adjustment

To change fan speed
Every time you press the FAN button once, it switches from the low-speed to
high-speed settings successively.
Note:
● In the following cases, the actual fan speed generated by the unit will differ
from the speed shown the remote controller display.
1. When the unit is in STAND BY or DEFROST states.
2. When the temperature of the heat exchanger is low in the heating mode.
(e.g. immediately after heating operation starts)
3. In HEAT mode, when room temperature is higher than the temperature
setting.
4. When the heater control mode is the factory setting and the heater is
on, the fan will operate at high speed.
* Every time the fan speed adjustment button is pressed once, the fan speed is
changed.

4. The smart way to use

Even minimal steps to care for your air conditioner can help make its use far
more effective in terms of air-conditioning effect, electricity charges, etc.
Set the right room temperature
• In cooling operation, a temperature difference of about 5 °C [9 °F] between
indoors and outdoors is optimum.
• If the room temperature is raised by 1 °C [2 °F] during air-cooling operation,
about 10 % electric power can be saved.
• Excessive cooling is bad for health. It also results in the waste of electric power.
Clean the fi lter thoroughly
• If the screen of the air fi lter becomes clogged, the airfl ow and air-conditioning
effect can be signifi cantly reduced.
Further, if the condition is left unattended, failure can result. It is particularly
important to clean the fi lter at the beginning of the cooling and heating seasons.
(When profuse dust and dirt have accumulated, clean the fi lter thoroughly.)

5. Caring for the machine

Always have fi lter maintenance performed by a service person.
Before performing maintenance, turn the power supply OFF.
Caution:
• Before you start cleaning, stop operation and turn OFF the power supply.
Remember that the fan is rotating inside at high speed, posing a serious
risk of injury.
• Indoor units are equipped with fi lters to remove the dust of sucked-in air.
Clean the fi lters following the procedures on the below. (The standard
fi lter should normally be cleaned once a month.)
• The life of the fi lter depends on where the unit is installed and how it is
operated.
• When removing the fi lter, precautions must be taken to protect your eyes
from dust. Also, if you have to climb up on a stool or ladder to do the job,
be careful not to fall.
How to clean
• A washable air fi lter is provided with the unit.
• Clear dust away lightly or clean it up with a vacuum cleaner. In the case of
severe clogging, wash the fi lter in lukewarm water mixed with dissolved neutral
detergent or water, and then rinse off the detergent completely. After washing,
dry it and reinstall.
Caution:
• Do not dry the fi lter by exposing it to direct sunlight or warming it using
fi re, etc. Doing so can result in the deformation of the fi lter.
• Washing it in hot water (more than 50 °C [122 °F]) can also result in
deformation.
Caution:
Never pour water or fl ammable sprays onto the air conditioner. Cleaning
using these methods can result in the failure of the air conditioner, electric
shock, or fi re.
Removal and replacement of fi lter
• Unscrew the two thumb knobs on the panel stamped "fi lter" tilt forward and pull
the panel out. Grasp the edge of the fi lter and slide out. Re-install in reverse.
(see Fig A)
8
Fan speed: 3 stages
Display:
AUTO
* This setting can be adjusted only with MA remote controller.
Prevent intrusion of heat during air-cooling
• To prevent the intrusion of heat during cooling operation, provide a curtain or a
blind on the window to block out direct sunlight. Also, do not open the entrance
or exit except in cases of dire necessity.
Carry out ventilation sometimes
• Since the air periodically gets dirty in a room that is kept closed for a long time,
ventilation is sometimes necessary. When gas appliances are used together
with the air conditioner, special precautions must be taken. If the "LOSSNAY"
ventilation unit developed by our company is used, you can perform ventilation
with less waste. For details on this unit, consult with your dealer.
Filter
FILTER
Fig A