SiSG121917E
Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis
158
7.16 Position Sensor Abnormality
Error Code
H6
Outdoor Unit LED
Display
A
j
1
i
2
i
3
h
4
h
5
h
Method of Error
Detection
A compressor start-up failure is detected by checking the compressor running condition through
the position detection circuit.
Error Decision
Conditions
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 5 minutes without any other error
Supposed
Causes
Disconnection of the compressor relay cable
Defective compressor
Defective outdoor unit PCB
Start-up failure caused by the closed stop valve
Input voltage is outside the specified range.
Troubleshooting
Caution
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
N
O
YES
T
u
rn off the po
w
er.
Check the po
w
er s
u
pply
v
oltage.
Correct the po
w
er s
u
pply.
(R24909)
N
O
YES
A
Go to the next page
Check No. 20
Check the short circ
u
it of the diode
b
ridge.
Replace the o
u
tdoor
u
nit
PCB (main PCB).
N
ormal?
N
O
YES
Check No. 18
Check the discharge press
u
re.
Replace the stop
v
al
v
e.
OK?
Is the
v
oltage
fl
u
ct
u
ation
w
ithin
±10
%
from the rated
v
al
u
e?
