Airwell MVI Series User manual

OPERATION MANUAL
OPERATION MANUAL
DC-inverter air-conditioners
“ MV
i” series
CONTENT
FEATURES AND FUNCTIONS 1
PRECAUTIONS 2
OPERATION INSTRUCTIONS  4
TROUBLESHOOTING 6
ENGLISH
Model
DSV015 DSV018
DSV021 DSV024
DSV030 DSV036
Before using your air-conditioner, please
read this operation instruction carefully
and keep it for future reference.
Duct unit
Model
DLV007 DLV009 DLV012
DLV015 DLV018 DLV021
DLV024

1
1. FEATURES AND FUNCTIONS
6. OPERATING TEMPERATURE RANGE
2. AUTO CHANGE OVER
Using the "AUTO" mode, the unit
automatically switch between available
operation modes (cooling,dry,heating) to
maintain the set temperature constant all time.
This function is only valid in heating recovery
system.
3. CONTROL ALTERNATIVE
The unit offers two kinds of optional
controllers: wireless remote controller and
local wiring controller (LWC).
4 . S L E E P
This function is designed to create
comfortable sleeping conditions. When
COOLING mode, the temperature rises one
degree centigrade after each consecutive
hour, up to three hours, from the start of
the mode. The temperature rise prevents
the feeling of over-cooling while sleeping.
In HEATING mode the reverse occurs;
the air conditioner lowers its temperature
one degree every hour. When SLEEP
mode is activated, the air conditioner will
automatically turned off after seven ours.
1. FORCE COOLING/HEATING
The unit offers a MODE button on the
display, after pressing this button the unit
starts cooling or heating in the case the
controller is broken or disappeared.
5. I-FEEL
This function switches the temperature
sensing point to the place where the
remote control is located. (Generally the
temperature sensor is located behind the
intake grille of the air conditioner). This
function is designed to provide personalized
environment by transmitting the temperature
control command from location next to you.
Indoor unit Outdoor unit
DB [OC] WB [OC] DB [OC] WB [OC]
Cooling Upper Limit 32 23 46 NA
Lower Limit 21 15 -10 NA
Heating Upper Limit 27 NA 24 18
Lower Limit 10 NA -15 -16

2
2. PRECAUTIONS
Caution
This sign warns about damage of property.
Provide occasional ventilation during use.

Do not direct air flow at fireplaces or heating apparatus.

Do not climb on, or place objects on, the air conditioner.

Do not hang objects
at the indoor unit.
Do not expose the air conditioner directly to water.

Do not operate the air conditioner with wet hands.

Do not pull power supply cord.

Turn off power
supply when not using the unit for extended periods.
Do no place animals or plants in the direct path of the air flow.

Do not drink the water drained from the air conditioner.

Do not use
this application to storage of foods, plants or animals, precision equipment, or
art works.
Connection valves become hot during heating: handle with care.

Do not apply any heavy pressure to
of fan coil fins.
Operate only with air filters installed

Do not block or cover the intake grille and outlet port

Ensure that any electronic equipments is at least one meter away from the indoor units.

Avoid installing the air conditioner near a fireplace or other heating apparatus.

When installing the indoor unit, take precautions to prevent access to infants.

Do not use inflammable gases near the air conditioner.

The appliance shall be installed in accordance with national wiring regulations.

This appliance is not intended for use by persons(including children) with reduced

physical, sensory, or mental capacities, or lack of experience and knowledge, unless they
have been given supervision or instruction concerning use of the appliance by a person
responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.


3
Danger
This sign warns about death or serious injury.
Do not attempt to install this air conditioner by yourself.

This unit contains no user-serviceable parts. Always consult authorized service personnel

to install, start up,mainlain and repair this unit.
When moving, consult authorized service personnel for disconnection and installation of

the unit.
Do not become excessively chilled by staying for lengthy periods in the direct cooling

airflow.
Do not start and stop air conditioner operation by disconnecting the power supply cord

and so on.
Take care not to damage the power supply cord.

In the event of a malfunction (burning smell, etc), immediately stop operation, disconnect

the power supply plug, and consult authorized service personnel.
If the power supply cord or this appliance is damaged, it should only be replaced by

authorized service personal, since special purpose tools and specified cord are required.
The appliance is not intended for use by young children of infirm persons without

supervision.
Please pre-heat the air conditioner for at least 12 hours before
the first operation.
2. PRECAUTIONS

4
3. OPERATION INSTRUCTION
A.MODE/RESET BUTTON

button will reset filter timer and turn off the filter
clean LED.

operation mode in Cooling-Heating-OFF as circle.

allow to enter diagnostic mode. For details please
contact the technician.
B.OPERATION INDICATOR
Lights up in green during operation.
Blinks once when receiving message from remote
controller.
Blinks for 3 seconds when cool mode is selected
through mode button.
Blinks when the unit is in protection or fault state.
C.POWER INDICATOR
Lights up in red whenever power is on.
Blinks for 3 seconds when heat mode is selected
through mode button.
D.TIMER INDICATOR
Lights up in yellow when TIMER mode at remote
controllers is used.
Blinks after power off when Timers is set to show
that timer counting is lost.
E.FILTER INDICATOR

F.SIGNAL RECEIVER
Receive
If the air-conditioner can not be operated by the Remote Control , it can be turned on
for cooling or heating, or completely turned off , by every short pressing on MODE
button (A) on the air-conditioner . The MODE button will change the operating status
of the unit between - COOLING - HEATMG - OFF positions.Enter into diagnostic
mode by pressing MODE button at display for long time.
3.1 Special Tips

5
Excessively low room temperature may harm your health. Avoid playing with the set point
temperature (SPT).
During cooling, avoid direct sun. Keep curtains and blinds closed. Close doors and
windows to keep the cool air Inside the room.
Avoid generating heat or using heating appliances while the air conditioner is in cooling
mode.
Position the louvers in a way to prevent your body from being directly exposed to air
drafts.
During prolonged operation, ventilate the room occasionally by opening a window from
time to time.
In case of a power shot off, the unit will restart automatically by using its Power Failure
Memory Function. This function ensures that the unit will continuing working in last mode
selected. Otherwise the unit will keep OFF. In this case, please call your installer to set
this function.
Please allow the unit a 3 minutes operation (cooling,heating or drying) break between shot
off and restart.
In case the unit will operate cooling or dry in a room containing high humidity for long time,
moisture may appear on the outlet and drip down.
The wireless remote controller's signals may not be received if the indoor unit's control box
is exposed to direct sunlight or strong light for a long time.
The wireless remote controller cantransmit signals up to 8 meters.
For local wiring controller (LWC) using with the indoor unit, please read relevant manual.
3. OPERATION INSTRUCTION
3.2 Generally

6
4. TROUBLESHOOTING
Before calling for service, please check the following
common malfunctions and correct it.
Problem Cause Remedy
1
Unit does not operate.
Power indicator
doesn’t light up.
Unit isn’t connecting of power.

Power failure.
Check main fuse.

2
Unit does not
respond properly to
remote controller’s
command.
Holiday function is set by LWC.

IR signal does not reach unit.

Distance between remote

control and unit too long or
aimed at from improper angle.
IR-receiver on-unit exposed to

strong light source.
Cancel Holiday setting from

LWC manually.
Check for obstruction between

unit and remote control and
clear it .
Get closer to unit.



3Local wire controller
(LWC) doesn’t work
The whole system is in fault.

Communication wire doesn’t

connect well.
Check the power supply of

indoor unit.
Contact the serviceman to

check the communication wiring.
4Air does not blow out
from indoor unit.
Cold air proofed protection.

De-icing protection mode is

activated.
Over cooling in Dry mode.

Normal operation in HEATING

mode, please wait a few
minutes.
Normal operation in DRY mode.

5
COOLING, DRY or
HEATING mode does
not start immediately.
3-min. compressor delayed

start.
Normal operation for these

modes.
6[1] [2]
Fault code – A1


with the system operation mode.
System control mode isn’t


heating or master indoor unit
or control by OAT.
Stop using the unit or change

the unit’s operation mode to the
same with master indoor unit’s
mode.
Connect with the dealer to

check system control mode.
7
Fault code – A2 Condense water is full.
Try to drain out the condense

water.
8
Unit communication
failure ( for indoor unit)
Fault code – A5
Outdoor unit power failure.
Recover power supply for

outdoor unit.
9Unit defrost
Fault code – b1 Unit temperature is low.

Normal operation in HEATING

mode, system can adjust
automatically, please wait a few
minutes.
10
Cold air proofed
protection
Fault code – bb
At the beginning run heating

mode.
Normal operation in HEATING

mode.
11 Unit Overheating
Fault code – bd Unit temperature is too high.

Normal operation in HEATING

mode, system can adjust
automatically, please wait a few
minutes.
12
Communication
failure
(for outdoor unit)
Fault code – db
Communication wire bad

connection.
Power failure.

Connect the serviceman to

check the communication wiring.
Make sure all the power supply

is normal.
13
Unit deicing
(For outdoor unit)
Fault code – FC
Outdoor coil is covered with

ice.
Refrigerant leakage.

Normal operation in HEATING

mode.
Add refrigerant by serviceman if

system enters deicing with high
frequency.
14
Unit oil returning cycle
(For outdoor unit)
Fault code – Fd
It is time for oil returning to

compressor.
Normal operation in HEATING

DRY or COOLING mode.

7
4. TROUBLESHOOTING
Note:
[1] From item 6 to 14, the fault code can only scan from LWC.
[2]
COOLING OR DRY OR FAN. If setting mode is COOLING or DRY or FAN and “A1” is warning,
please change the mode to HEATING;
If meeting following situation please call for your dealer as soon as possible:
1. Can't solve problem according to this manual;
2. Find other fault code from LWC which isn't referring in this manual.