TROUBLESHOOTING GUIDE
Problem
Probable cause
Remedy
A.
The air conditioner does not run.
1.
Power Failure.
2.
Fuse blown or circuit breaker open.
3.
V
oltage 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.
W
ait for Power resume.
2.
Replace the fuse or reset the breaker
.
3.
Find the cause and fix 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 b
efore 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.
Fin
d the cause then replace Capacitor
.
C.
There is insufficient 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.
W
ait while unit ha
s 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 (h
eat 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
.
Maximum Piping Lengths
: See T
echnical Specification
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 flare connectors and flare the ends of the pipes.
Refrigerant charge to be added per extra metre of piping length when
more than 7 meters.
TEST OPERA
TION
CHECK THIS ITEM BEFORE ST
ART OPERA
TION
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 firmly fixed.
•
Check the connecting pipes are tighten securely
.
•
Check the pipe insulation.
•
Check the drainage.
•
Check the connection of the grounding wire.
This unit is shipped complete with a charge of R-22/R-407C refrigerant that will
be suffi
cient for an interconnecting piping length of 7 meters.
Unit size
12
18
24
36
48
60
g/m
15
40
40
40
60
60
Low Pressure
Gas
Valve
Liquid
Valve
Pressure
Ta
p
Manifold
High Pressure
Indoor
Unit
Outdoor
Unit
Gas Line
Liquid Line
R-22/R-407C
J422_EN.indd 4
10/30/07 11:04:20 AM
YOEA36FS-AFH
H
F
A-
S
F
6
3
A
J
O
Y
H
F
A-
S
F
6
3
A
K
O
Y
H
F
A-
S
F
6
3
A
D
O
Y
H
F
A-
S
F
8
4
A
K
O
Y
H
F
A-
S
F
8
4
A
D
O
Y
H
F
A-
S
F
8
4
A
E
O
Y
H
F
A-
S
F
0
6
A
D
O
Y
H
F
A-
S
F
0
6
A
E
O
Y
H
F
A-
S
F
8
4
A
J
O
Y
H
F
A-
S
F
0
6
A
J
O
Y
H
F
A-
S
F
0
6
A
K
O
Y
H
D
A-
S
F
4
2
A
E
O
Y
H
D
A-
S
F
4
2
A
D
O
Y
Not
e
: M
a
tching with Air handler
, must c
onnec
t 1 wir
e
M
a
tching with c
eilling and floor
, r
emo
v
e
1 wir
e
Isolation
Epaisseur minimale 6 mm
Pompe à
chaleur
Liquide
Refroidissement
Pompe
à chaleur
(décharge)
Refroidissement (aspiration)
Pompe à chaleur
(décharge)
Pompe à
chaleur
Liquide
Refroidissement
GAZ
Refroidissement
(aspiration)
BLACK
WHITE
202075590238
