Check code
Location
of
detection
Description
System
status
Trouble
detection
condition(s)
Main
Check items (locations)
remote
Outdoor 7-segment display
control
Check
code
Sub-code
Oil level
detection
circuit
trouble
All stop
01: TK1 oil circuit
trouble
02: TK2 oil circuit
trouble
04: TK4 oil circuit
trouble
05: TK5 oil circuit
trouble
•
•
No temperature
change is detected
by TK1 despite
compressor 1
having
been started.
•
•
•
Check for disconnection of TK1 sensor.
Check resistance characteristics of TK1
sensor.
Check for connection
trouble
involving
TK1, TK2, , TK4, and TK5 sensors
Check for clogging in oil equalizing
circuit capillary and faulty operation in
check valve.
Check for refrigerant entrapment inside
compressor.
•
•
No temperature
change is detected
by TK2 despite
compressor 2
having
been started.
•
•
•
Check for disconnection of TK2 sensor.
Check resistance characteristics of
TK2 sensor.
Check for connection
trouble
involving
TK1, TK2, , TK4, and TK5 sensors
Check for clogging in oil equalizing
circuit capillary and faulty operation in
check valve.
Check for refrigerant entrapment inside
compressor.
I/F
No temperature
change is detected
by TK4 despite
compressor having
•
been started.
•
•
•
•
Check for disconnection of TK4 sensor.
Check resistance
characteristics
of TK4 sensor.
Check for connection
trouble
involving
TK1, TK2, , TK4, and TK5 sensors
.
Check
for clogging in oil equalizing
circuit capillary and faulty operation in
check valve.
Check for refrigerant entrapment inside
compressor.
No temperature
change is detected
by TK5 despite
compressor having
•
been started.
•
•
•
•
H16
Check for disconnection of TK5 sensor.
Check resistance
characteristics
of TK5 sensor.
Check for connection
trouble
involving
TK1, TK2, , TK4, and TK5 sensors
.
Check
for clogging in oil equalizing
circuit capillary and faulty operation in
check valve.
Check for refrigerant entrapment inside
compressor.
H16
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