Troubleshooting
SiMX042215E
80
Part 6 Service Diagnosis
4.18 Compressor System Sensor Abnormality
Error Code
H0
Method of Error
Detection
The system checks the DC current before the compressor starts.
Error Decision
Conditions
The voltage converted from the DC current before compressor start-up is out of the range
0.5 ~ 4.5 V.
The DC voltage before compressor start-up is below 50 V.
Supposed
Causes
Broken or disconnected harness
Defective outdoor unit PCB
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
(R22016)
YES
T
u
rn off the po
w
er. Then, t
u
rn on
the po
w
er to restart the system.
YES
N
O
Replace the harness.
Replace the o
u
tdoor
u
nit
PCB (main PCB).
Is the harness
b
roken?
Restart operation
and error displayed
again?
Check the relay harness for the
compressor.
N
ot a malf
u
nction.
Keep o
b
ser
v
ing.
