Ye
s
Ye
s
Ye
s
No
Ye
s
No
No
Ye
s
No
Ye
s
No
No
Ye
s
No
[P20]
Cooling operation
(B)
No
Ye
s
No
e
s
u
a
C
e
d
o
c
k
c
e
h
C
Check code name
High-pressure protective
operation
1. Pd
sensor
error
2. Service
valve
closed.
3.
Indoor/outdoor fan error
4. Indoor/outdoor
PMV
clogging
5.
Indoor/outdoor heat exchanger clogging
6.
SV2 circuit error
7.
SV4 circuit error
8.
SV5 circuit error
9.
Outdoor I/F P
.C. board error
10.
Operation error of check valve of main discharge
pipe
1
1. Refrigerant
overcharge
Are service valves fully
opened?
Does
cooling outdoor fan
normally operate?
Is there
any fan crack
or coming-of
f?
Is SV2 bypass
circuit normal?
Is SV4 circuit normal?
Is check valve of
main discharge pipe
normal?
Are
characteristics of high-
pressure sensor
normal?
Open service valves fully
.
Repair faulty parts.
Repair faulty parts.
Repair outdoor PMV
.
Eliminate the interference.
Repair SV2 bypass circuit.
Repair SV4 circuit.
Repair check valve.
Replace
Refrigerant overcharge, clogging, pipe
breakage, abnormal overload
(Connector connection, fan IPDU,
fan motor
, cabling)
(Coil error
, clogging, disconnection
of wire, etc.)
(Coil error
, clogging, disconnection
of wire, etc.)
Check parts.
Failure
Replace
Reset power supply
, and start a test operation
corresponded to the season.
Cooling
T
o
(B)
Heating
T
o
(C)
* 1. Pressure by pressure gauge (Check joint)
2. Pressure display on 7-segment display
3. Output voltage of I/F P
.C. board
If 1 and 2, 3 are dif
ferent, an error of pressure sensor
is considered.
If 2 and 3 are dif
ferent, check I/F P
.C. board.
Is there any
interference of heat-
exchanging of outdoor unit?
1. Heat exchanger clogging
2.
Air short circuit
Connectors: PMV1: CN300,
PMV
3
: CN30
2
, PMV4: CN303
Ye
s
Is outdoor PMV normal?
1. Connector connection
2. Wiring
3. Coil
4. V
alve body
5. Outdoor I/F P
.C. board
Ye
s
No
Ye
s
No
Ye
s
No
No
No
Ye
s
No
Ye
s
[P19]
Sub-code: Detected outdoor unit No.
Cause
Check code
Check code name
4-way valve reverse error
1.
4-way valve error
2.
TS1 sensor/TE1 sensor error
3.
Pd sensor/Ps sensor error
4.
TE sensor/TL
sensor misconnection
Is 4-way valve
coil connector
connected?
Are output voltage
characteristics of Pd and
Ps sensors normal?
Are
characteristics of
resistance value of
TS1,
TE1 and
TL
1
sensors
normal?
Are TS1, TE1
and TL
1
sensor
connectors connected
normally?
Does
discharge refrigerant
gas bypass to suction
side through 4-way
valve? *1
Does 4-way valve
operate?
Correct connector connection.
(4-way valve coil: CN317)
Sensor error
Sensor error
Correct connector connection
TS1 sensor: CN505
TE1 sensor: CN520
TL
1
sensor: CN523
If no error occurs in the test
operation, restart operation.
Check 4-way valve.
4-way valve error
Reset the power supply and
start heating test operation.
*1 Check
TS1 and
TE1 temperature of the outdoor unit which is running.
(I/F) SW01=[1], SW02=[6], SW03=[2]
TS sensor temperature
SW01=[1], SW02=[7], SW03=[2]
TE sensor temperature
<Judgment criteria>
TE1 sensor: Normal if
TE1 is 30°C or less in the seasons except
summer (Outside temp 20°C or lower)
TS1 sensor: Normal if
TS is 50°C or less in the seasons except
summer (Outside temp 20°C or lower)
* Se
e “
O
u
tdo
or
un
it te
mp
erat
ur
e se
nso
r
characteristics”
on
“8-
10
. Sensor Charac
teristics”.
−
213
−
AMP Air Conditioning
www.ampair.co.uk | [email protected]
Summary of Contents for MAP1406HT8(J)P
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