SiMX042215E
Troubleshooting
Part 6 Service Diagnosis
81
4.19 Position Sensor Abnormality
Error Code
H6
Method of Error
Detection
A compressor start-up failure is detected by the current waveform generated when applying
high frequency voltage to the motor.
Error Decision
Conditions
The compressor fails to start in about 15 seconds after the compressor run command signal
is sent.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 11 minutes without any other error
Supposed
Causes
Power supply voltage out of specification
Disconnection of the compressor harness
Defective compressor
Defective outdoor unit PCB
Start-up failure caused by the closed stop valve
Input voltage out of 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?
