L
N
P
Q
(E)
Y/G
Y/G
P
Q (E)
L1
L2
L3
N
POWER
EMERGENCY SWITCH
TIMER
COMP
POWER
EMERGENCY SWITCH
TIMER
COMP
D
L
H
L
For 36000-60000 Btu/h
Power supply
1-Phase
220-240V~ (3-core cable 3x2.5mm
2
)
Power supply
3-Phase
380-415V~ (5-core cable 5x2.5mm
2
)
3-core sheild cable
DC Inverter R-410A
OUTDOOR UNIT
INDOOR UNIT
Indoor
Unit
Outdoor
Unit
Gas Line
Liquid Line
R-22/R-407C
Problem
Probable cause
Remedy
A.
The air conditioner does not
run.
1. Power Failure.
2. Fuse blown or circuit breaker open.
3. Voltage is too low.
4. Faulty contactor or relay.
5. Electrical connections loose.
6. Thermostat adjustment too low (in heating mode) or too high
(in cooling mode).
7. Faulty Capacitor.
8. Incorrect wiring, terminal loose.
9. Pressure switch tripped.
1. Wait for Power resume.
2. Replace the fuse or reset the breaker.
3. Find the cause and
fi
x it.
4. Replace the faulty component.
5. Retighten the connection.
6. Check Thermostat setting.
7. Find the cause then replace Capacitor.
8. Check and retighten.
9. Find the cause before reset.
B. The outdoor fan runs but the
compressor will not start.
1. Motor winding cut or grounded.
2. Faulty Capacitor.
1. Check the wiring and the compressor winding resistance.
2. Find the cause then replace Capacitor.
C. There is insuf
fi
cient heating or
cooling.
1. There is a gas leak.
2. Liquid and gas line insulated together.
3. The room was probably very hot (cool) when you started the system.
1. Remove charge, repair, evacuate and recharge.
2. Insulate them separately.
3. Wait while unit has enough time to cool the room.
D. The compressor run
continuously.
1. Thermostat adjustment too low (in heating mode) or too high
(in cooling mode).
2. Faulty fan.
3. Refrigerant charge too low, leak.
4. Air or incondensables in refrigerant circuit.
1. Check Thermostat setting.
2. Check condenser air circulation.
3. Find leak, repair and recharge.
4. Remove charge, evacuate and recharge.
E. The compressor starts but
shuts down quickly.
1. Too much or too little refrigerant.
2. Faulty compressor.
3. Air or incondensables in refrigerant circuit.
4. Changeover valve damaged or blocked open (heat pump unit).
1. Remove charge, evacuate and recharge.
2. Determine the cause and replace compressor.
3. Remove charge, evacuate and recharge.
4. Replace it.
F. Clicking sound is heard from
the air conditioner.
In heating or cooling operation any plastic parts may expand or shrink due to
a sudden temperature change in this event, a clicking sound may occur.
In heating or cooling operation any plastic parts may expand
or shrink due to a sudden temperature change in this event,
a clicking sound may occur.
Low Pressure
Gas Valve
Liquid Valve
Pressure Tap
Manifold
High Pressure
❥✱
Maximum Piping Lengths
Note : Where the difference in elevation between the indoor unit and the outdoor unit is greater than
5 meters, install an oil trap every 5 meters.
The suction line must have a 2% gradient up to the compressor on horizontal
sections.
Where piping lengths are unusually long and include a large number of oil
traps, it may be necessary to adjust to compressor charge.
❥✱
Refrigerant Piping
Connections (FLARE
Connections)
To avoid alteration of unit capacities,
check that piping lengths and changes in
elevation are kept to a strict minimum.
Before connection the refrigerant lines,
follow the procedures below (if precharged
connection lines are not supplied):
– Select copper pipe diameters according
to the size of unit to be installed.
– Install the refrigeration lines, checking
that no foreign bodies get inside the
piping.
– Install
the
fl
are connectors and
fl
are the
ends of the pipes.
Refrigerant charge to be added per extra metre of piping length when
more than 7.5 meters.
TEST OPERATION
CHECK THIS ITEM BEFORE START OPERATION
Outdoor
Check the
fl
are nut connections, valve stem cap connections and service cap
connections for gas leak with a leak detector or soap water.
Indoor
• Check the unit is
fi
rmly
fi
xed.
• Check the connecting pipes are tighten securely.
• Check the pipe insulation.
• Check the drainage.
• Check the connection of the grounding wire.
TROUBLESHOOTING GUIDE
This unit is shipped complete with a charge of R-22/R-407C refrigerant that will
be suf
fi
cient for an interconnecting piping length of 7.5 meters.
Unit size
09
12
18
25
35
45
55
65
D (m)
12
15
15
22
22
26
26
26
L (m)
15
18
18
25
25
30
30
30
H (m)
10
12
12
20
20
24
24
24
Unit size
07
09
12
18
25
35
45
55
65
g/m
15
15
15
40
40
40
60
60
60