Auto Restart Function - Mitsubishi Electric Mr.Slim MS24WN Installation Manual

4-3 POWER SUPPLY AND INDOOR/OUTDOOR UNIT
CONNECTING WIRE CONNECTION
•
Power should be taken from an exclusive branched circuit.
•
Wiring work should be based on applicable technical standards.
•
Wiring connections should be made following the diagram.
Screws should be tightened so they won't loosen.
ELECTRICAL SPECIFICATIONS
MODEL
Power supply (V, PHASE, Hz)
Min. Circuit Ampacity
Fan motor (F.L.A)
Power supply (V, PHASE, Hz)
Max. Fuse size (time delay) (A)
Min. Circuit Ampacity
Fan motor (F.L.A)
(R.L.A)
Compressor
(L.R.A)
Control voltage
Note:
If the indoor unit is powered from outdoor unit, a separate circuit breaker is not required
but a disconnect switch may be required by local code. If the indoor unit is powered
from an independent power supply, a dedicated circuit breaker or maximum fuse size of
15A must be installed for the indoor unit, and a disconnect switch may also be required.
(Refer to the figures on the right.)
1 Remove the front panel. (Refer to 7-1)
2 Remove the corner box. (Refer to 7-2)
3 Remove the electrical cover.
Electrical cover
R.L.holder
7 Remove the conduit cover.
Pull
down
Indoor terminal block
Indoor/outdoor unit connecting wire A
Note:
Please note that Indoor/outdoor connecting wires should not be on the separator.
MS24WN MSH24WN
INDOOR UNIT
115, 1, 60
1.1
0.82
OUTDOOR UNIT
208/230, 1, 60
25
22
0.86
16
58
Indoor unit-Remote controller : (Wireless)
Indoor unit-Outdoor unit : DC12V (Polar)
4 Remove the R.L.holder.
5 Remove the lead wire from the hook of
the conduit cover.
6 Remove the fixing screw for the conduit
cover.
Conduit cover
Fixing screw
8 Fix the conduit connector to conduit plate
with lock nut.
After that, set secure the conduit plate and
electrical box tightly with the fixing screw.
Conduit plate
Lock
nut
Electrical cover
Fixing screw
Securely push the wire into
the terminal block until no
part of its core is appeared.
Separator
•
Use the indoor/outdoor unit connecting wire that meets the Standards to connect
the indoor and outdoor units and fix the wire to the terminal block securely so that
no external force is conveyed to the connecting section of the terminal block.
Incomplete connection or fixing of the wire could result in a fire.
•
Attach the electrical cover securely. If it is attached incorrectly, it could result in a
fire or an electric shock due to dust, water, etc.
Connect wires to the matching numbers
of terminals.
Remark:
∗
Indoor unit can also be
powered from an
independent power supply
[Max. Fuse size (time
delay) : 15 A].
In this case these indoor/
outdoor connecting wires
for indoor power supply
are not necessary.
∗∗ A disconnect switch may
be required.
Check the local code.
∗∗∗ Use a ring tongue terminal
in order to connect a
ground wire to terminal.
Electrical box
CONNECTING WIRES
• For 115 V AC, wired to be AWG14 double insulated, 300 V insulation, or as required
by national or applicable local code.
For 12 V DC, control wire must be from AWG22 to AWG14 stranded and double
insulated, 300 V insulation.
Equal to Belden 9407.
• Use copper conductors only.
•
Be careful not to make mis-wiring.
•
Firmly tighten the terminal screws to prevent them from loosening.
•
After tightening, pull the wires lightly to confirm that they do not move.
•
If the connecting wire is incorrectly connected to the terminal block, the unit does
not operate normally.
•
If a ground is incorrect, it may cause an electric shock.

4-4 AUTO RESTART FUNCTION

•
When the units of these models are shipped from the factory, auto restart function is
Connector
set to ON. If you want to know how to release this function, consult the service center.
•
When the indoor unit is controlled with the remote controller, the operation mode, the
Conduit
set temperature, and the fan speed are memorized by the indoor electronic control
P.C. board. The auto restart function sets to work the moment the power has
restored after power failure, then, the unit will restart automatically. If the unit is
operated in
"I FEEL CONTROL" mode before power failure, the operation is not memorized. In
"I FEEL CONTROL" mode, the operation is decided by the initial room temperature
at (re)start.
Operation
1 If the power of the indoor unit (115V AC) has been cut, the operation settings remain.
Remark:
When indoor and outdoor unit are powered in separate circuit even if the power of the
outdoor unit (208/230V AC) is cut, auto restart function doesn't work.
2 When three minutes have passed after power was restored, the unit will restart
automatically according to the memory.
Notes:
• The operation settings are memorized when 10 seconds have passed after the
remote controller was operated.
• If the main power is turned off or a power failure occurs while AUTO START/STOP
timer is active, the timer setting is cancelled. As these models are equipped with the
auto restart function, the air conditioner should start operating at the same time that a
power has restored.
• If the unit has been off with the remote controller before power failure, the auto
restart function does not work as the power button of the remote controller is off.
• To prevent breaker off due to the rush of starting current, systematize other home
appliances not to turn on at the same time.
WARNING
Loosen terminal screw.
Terminal
block
<Connection details>
INDOOR UNIT
Terminal block
3 1 N L1
Disconnect switch
115V AC ∗
DC12 V (Polar)
1phase, 60Hz
Terminal
block 1
3 1 N L1 L1 L2 N
Terminal block 2
OUTDOOR UNIT
Power supply
208/230V AC, 1phase 3wires, 60Hz
CAUTION
5/8inch
Lead wire
Grounding
terminal ∗∗∗
∗∗
Grounding
terminal ∗∗∗
Ground