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Troubleshooting by Indication on the Remote Controller
SiUS28-902_a
103
Troubleshooting
Troubleshooting
N
O
YES
YES
YES
N
O
N
O
YES
N
O
YES
N
O
+5
V
(4)
(3)
(2)
(1)
Check for the points sho
w
n
b
elo
w
.
Is the stop
v
al
v
e open?
Is the HPS connector properly connected to the
main P.C.B.?
Does the high press
u
re s
w
itch ha
v
e contin
u
ity?
Are the
three points a
b
o
v
e
OK?
Rectify defecti
v
e points, if any.
· Mo
u
nt a press
u
re ga
u
ge on the high-press
u
re ser
v
ice port.
· Connect the Ser
v
ice Checker.
· Reset the operation
u
sing the remote controller,
and then restart the operation.
Does the stop
d
u
e to malf
u
nction (
E3
)
rec
u
r?
Is the HPS
operating
v
al
u
e normal
(i.e., 5
8
0psi)?
Are the
characteristics of the high
press
u
re sensor normal?
(See *1.)
Replace the HPS.
Replace the high press
u
re sensor.
Is the
press
u
re detected
w
ith
the P.C.B. normal?
(See *2.)
Replace the main P.C.B..
· The high press
u
re sensor is normal, and the press
u
re detected
w
ith the P.C.B. is also normal.
· The high press
u
re has really
b
ecome high.
CHECK 1
*1: Make a comparison
b
et
w
een the
v
oltage of the press
u
re sensor and that read
b
y the
press
u
re ga
u
ge.
(As to the
v
oltage of the press
u
re sensor, take the meas
u
rement of
v
oltage at the
connector, and then con
v
ert it to press
u
re according to information on P.16
8
.)
*2: Make a comparison
b
et
w
een the high press
u
re
v
al
u
e checked
w
ith the Ser
v
ice Checker
and the
v
oltage of the press
u
re sensor (see *1).
*3: Take meas
u
rement of
v
oltage of the press
u
re sensor.
Connector for high
press
u
re sensor (Red)
High
press
u
re
sensor
Micro controller
A/D inp
u
t
Take meas
u
rement of DC
v
oltage
b
et
w
een these
w
ires.
Red
Black
W
hite
(Refer to P.156)
Caution
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
the connector, or parts co
u
ld
b
e damaged.
Summary of Contents for SkyAir FCQ18PVJU
Page 1: ...Split System Air Conditioners SkyAir Inverter R 410A Heat Pump 60Hz P Series SiUS28 902_a...
Page 44: ...Other Control SiUS28 902_a 37 Function...
Page 81: ...SiUS28 902_a Troubleshooting by Remote Controller Troubleshooting 74...
Page 185: ...SiUS28 902 Precautions for New Refrigerant R 410A Precautions for New Refrigerant R 410A 178...