[H07]
e
s
u
a
C
e
d
o
c
k
c
e
h
C
Check code name
Oil level down detection
protection
1.
V
alves of balance pipes closed. (On all outdoor
units in a line)
2.
Miswiring or misinstallation of
TK1, TK2, TK4,
TK5
sensors
3.
TK1, TK2, TK4, TK5
sensor error
4.
Gas leak or oil leak in a line
5.
Refrigerant stagnation of compressor case
6.
SV3A, 3B, 3C, 3D
valve error
7.
Clogging of oil return circuit from oil separator
8.
Clogging of oil-equation circuit system
Indoor/outdoor PMV error (Cause of refrigerant stagnation),
discharge check valve error
, etc.
(Reference) When refrigerant stagnates in compressor shell, the oil level shortage may be
No
Open balance pipe valves
fully
, reset power suppl
y,
and start operation.
No
Sensor error
Replace
Specify gas leak position and
repair it.
(Recharging, refill oil)
Error
No stagnation
Replace faulty part.
No leakage or clogging
Clogging
Replace faulty part.
Check oil level judgment of each unit.
The check result is indicated on the
7-segment display by setting
[SW01/02/03] to [1/16/1].
Clogging
No
Replace faulty part.
No clogging
Clogging
Clear cause of stagnation.
Replace faulty part.
Are balance
pipe valves of all outdoor
units in same line fully
opened?
Y
es
Are
TK1,
TK2,
TK4 and
TK5 sensors of the
error-detected unit correctly
connected?
Are all the sensors
properly connected?
Y
es
Y
es
Check gas leak of all outdoor
units in the same line and
check soaked oil in them.
No error
Leakage or
clogging
Stagnation
Correct refrigerant stagnation
in compressor
, reset power
supply
, and start the operation.
(*1) Check leakage of
valves (SV3A, SV3C) and
clogging (SV3B
).
(*2) Check
clogging of oil return
circuit from oil
separator
. (Capillary
tube, strainer)
Check clogging of
SV3D valve.
No clogging
Are all oil levels
correct?
Y
e
s
Check clogging
of solenoid valves (SV3A,
SV3C) of all outdoor units
in the same line. (*3)
Check clogging of oil
equalization circuit. (*4)
Are
characteristics of
TK1, TK2, TK4 and TK5 of
error-detected unit
normal?
Check refrigerant
stagnation in
compressor
.
Correct miswiring and misinstallation.
TK1: CN531, black
TK2: CN532, green
TK4: CN534, yellow
TK5: CN535, red
No
*S
e
e
“O
ut
d
o
o
r
u
n
it
te
m
p
e
rat
u
re
s
e
n
s
o
r
characteristics”
on
“8-
10
.
Sensor
Characteristics”.
No
No
No
Ye
s
Ye
s
Ye
s
Ye
s
No
No
Ye
s
No
Ye
s
(Check with miswiring check function of outdoor unit.)
Ye
s
No
No
Ye
s
No
Ye
s
No
Ye
s
Ye
s
No
No
Cleaning
Cleaning
[H06]
Cause
Check code
Check code name
Low-pressure protective operation
1. Service
valve
close
2. Ps
sensor
error
3.
SV2, SV4 circuit error
4.
Miswiring of communication between indoor and
outdoor
5.
Indoor/outdoor fan and condenser error
6. Indoor/outdoor
PMV
clogging
7.
Indoor/outdoor heat exchanger clogging
8. Refrigerant
shortage
Are
service valves of
gas and liquid pipe of
outdoor unit fully
opened?
Are
characteristics of
low-pressure sensor
normal?
Are SV2 and SV4
circuits normal?
Is any indoor unit
in a dif
ferent line
connected?
Does indoor
fan normally operate
in cooling season?
Is there
clogging of indoor air filter
or heat exchanger?
Is indoor PMV
normal?
Is outdoor fan
normally operated in
heating season?
Is there
clogging of outdoor heat
exchanger?
Is outdoor PMV
normal?
Is connector
connection or coil
normal?
Is there clogging
on whole valve?
Are
following items
concerned to indoor fan
motor normal?
1. Connector connection
2. Condenser
3. Motor
4. Fan
Open service valves
fully
.
Exchange low-pressure
sensor
.
Correct SV2 and SV4
circuits.
Correct wiring.
Repair faulty parts.
Check indoor P
.C. board.
Failure
Replace
Ye
s
Refrigerant shortage or clogging or pipe deformed
Repair faulty parts.
Repair faulty parts.
Refrigerant shortage,
clogging, pipe deformed
Replace PMV body
.
Check outdoor I/F P
.C. board.
Failure
Replace
In cooling season, go to (A)
In heating season, go to (B)
(A) Cooling
(B) Heating
No
Check miswiring, misinstallation and connector connection.
No
*
1. Pressure by pressure gauge (Check joint)
Pressure display on 7-segment display
2.
3. Output voltage of I/F P
.C. board
If 1 and 2, 3 are dif
ferent, an error of pressure sensor error is considered.
If 2 and 3 are dif
ferent, check I/F P
.C. board.
Is indoor fan system normal?
Fan crack•
• Fan coming-of
f
−
1
98
−
AMP Air Conditioning
www.ampair.co.uk | [email protected]
Содержание MAP1406HT8(J)P
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