Toshiba MMD-AP0726HP-UL Service Manual page 66

Check code
Outdoor 7-segment display
Main
remote
Check
Sub-code
control
code
01: TK1 oil circuit trouble
02: TK2 oil circuit trouble
04: TK4 oil circuit trouble
05: TK5 oil circuit trouble
H16 H16
Location
System
of Description
detection
I/F
Oil level All stop
detection
circuit trouble
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Trouble detection
status condition(s)
No temperature
change is detected
by TK1 despite
compressor 1
having been started.
No temperature
change is detected
by TK2 despite
compressor 2
having been started.
No temperature
change is detected
by TK4 despite
compressor having
been started.
No temperature
change is detected
by TK5 despite
compressor having
been started.
Check items (locations)
• 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.
• 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.
• 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.
• 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.