Airwell MVI Series, Руководство по эксплуатации

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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.
●
Dim■lights,■fluorescent■especially.
●
3
Local 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.
4
Air 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]
Mode■conflict [2]
Fault code – A1
Unit’s■operation■mode■conflict■
●
with the system operation mode.
System control mode isn’t
●
first■win,■maybe■force■cooling/
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
Water■overflow
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.
9
Unit 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.