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[P17]
Chec
k code
Cause
Chec
k code name
Discharge temper
ature
TD3 error
1.
Outdoor unit ser
vice v
alv
e closed
2.
Outdoor PMV1, 2 error
3.
TD sensor error
4.
Refr
iger
ant shor
tage
, clogging inside of pipe
5.
4-w
a
y v
alv
e error
6.
SV4 circuit leakage
, misinstallation
7.
SV5 circuit clogging
8.
SV6 circuit clogging
9
. Incorrect piping of discharge gas/suction gas pipe
10.
Cooling/Heating FS unit error
Are
ser
vice v
alv
es of outdoor
unit discharge gas pipe
, suction
gas pipe
, liquid pipe
fully opened?
Are
outdoor PMV
, 1.
Connector connection
2.
Wir
ing, 3.
Coil, 4.
V
alv
e body
,
5.
Outdoor P
.C
. board nor
mal?
Is
resistance char
acter
istics
of TD3
sensor
nor
mal?
W
asn't
discharge gas b
ypass to
suction side b
y
4-w
a
y v
alv
e?
SV5
circuit leakage
chec
k
SV6
circuit clogging
chec
k
Chec
k
incorrect piping of discharge
gas/suction gas
main pipes
.
Is
Cooling/Heating
FS unit
nor
mal?
Isn't
an indoor unit of diff
erent
refr
iger
ant line
connected?
∗
Connectors:
PMV1:
CN300
PMV2:
CN301
PMV4:
CN303
No
No
No
No
No
No
No
No
No
No
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Open ser
vice v
alv
es fully
.
Repair outdoor PMV
.
Replace TD3
sensor
.
4-w
a
y v
alv
e chec
k
Correct instllation of v
alv
e coil.
Replace SV43 v
alv
e
.
Replace def
ectiv
e par
ts
.
Replace def
ectiv
e par
ts
.
Correct piping as standard.
Repair Cooling/Heating
FS unit
Correct wir
ing as standard.
* See "Outdoor unit temper
ature sensor
char
acter
istics" on "8-
9
. Sensor Char
acter
istics".
The
y are refr
iger
ant shor
tage
,
clogging and pipe breakage
.
(That is
, confir
m there is no pipe breakage
and then recharge refr
iger
ant.)
SV4 circuit
1.
Are SV41, SV42 and SV43
valv
e coils installed correctly?
2.
Is SV42 circuit sealed
correctly (no leakage)?
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
No
No
No
No
No
No
[P1
9
]
Sub-code:
Detected outdoor unit No
.
Chec
k code
Cause
Chec
k code name
4-w
a
y v
alv
e re
v
erse error
1.
4-w
a
y v
alv
e error
2.
TS1 sensor/TE1 sensor error
3.
Pd sensor/Ps sensor error
4.
TE sensor/TL sensor misconnection
5.
SV14 v
alv
e circuit oper
ation error (Coil wir
ing f
alls out)
Is 4-w
a
y v
alv
e
coil connector
connected?
Are output v
oltage
char
acter
istics of Pd and
Ps sensors nor
mal?
Are
char
acter
istics of
resistance v
alue of
TS1,
TE1 and
TL sensors
nor
mal?
Are TS1, TE1
and TL
sensor
connectors connected
nor
mally?
Does
discharge refr
iger
ant
gas b
ypass to suction
side through 4-w
a
y
valv
e? *1
Does 4-w
a
y v
alv
e
oper
ate?
Correct connector connection.
(4-w
a
y v
alv
e coil:
CN317)
Sensor error
Sensor error
Correct connector connection
TS1 sensor
: CN505
TE1 sensor
: CN520
TL sensor
: CN523
If no error occurs in the test
oper
ation, restar
t oper
ation.
4-w
a
y v
alv
e error
Chec
k 4-w
a
y v
alv
e
.
Reset the po
w
er supply and
star
t heating test oper
ation.
*1 Chec
k
TS1 and
TE1 temper
ature of the outdoor unit which is r
unning.
(I/F) SW01=[1], SW02=[7], SW03=[2]
→
TS sensor temper
ature
SW01=[1], SW02=[
9
], SW03=[2]
→
TE sensor temper
ature
<J
udgment cr
iter
ia>
TE1 sensor
: Nor
mal if
TE1 is 30
°
C or less in the seasons e
xcept
summer (Outside temp 20
°
C or lo
w
er)
TS1 sensor
: Nor
mal if
TS is 50
°
C or less in the seasons e
xcept
summer (Outside temp 20
°
C or lo
w
er)
* See "Outdoor unit temper
ature sensor
char
acter
istics" on "8-
9
. Sensor Char
acter
istics".
No
Is
Cooling/Heating
FS unit nor
mal?
Repair Cooling/Heating FS unit.
AMP Air Conditioning
www.ampair.co.uk | [email protected]
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