Toshiba MMD-AP0724H2UL Service Manual page 63

Check code
Outdoor 7-segment display
Main
remote
Check code
controller Sub-code
01: TK1 oil
circuit error
02: TK2 oil
circuit error
03: TK3 oil
circuit error
04: TK4 oil
circuit error
05: TK5 oil
circuit error
H16 H16
H25 H25 –
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Location
System
of Description
status
detection
I/F Oil level All stop
detection
circuit error
I/F TD3 sensor All stop
miswiring
(incomplete
insertion)
– 63 –
Error detection
Check items (locations)
condition(s)
No temperature • Check for disconnection of TK1 sensor.
change is detected • Check resistance characteristics of
by TK1 despite TK1 sensor.
compressor 1 having • Check for connection error involving
been started. TK1, TK2, TK3, TK4, and TK5 sensors
• Check for faulty operation in SV3E or
SV3F valve.
• Check for clogging in oil equalizing
circuit capillary and faulty operation in
check valve.
• Check for refrigerant entrapment inside
compressor.
No temperature • Check for disconnection of TK2 sensor.
change is detected • Check resistance characteristics of
by TK2 despite TK2 sensor.
compressor 2 having • Check for connection error involving
been started. TK1, TK2, TK3, TK4, and TK5 sensors
• Check for faulty operation in SV3E or
SV3F valve.
• Check for clogging in oil equalizing
circuit capillary and faulty operation in
check valve.
• Check for refrigerant entrapment inside
compressor.
No temperature • Check for disconnection of TK3 sensor.
change is detected • Check resistance characteristics of
by TK3 despite TK3 sensor.
compressor 3 having • Check for connection error involving
been started. TK1, TK2, TK3, TK4, and TK5 sensors
• Check for faulty operation in SV3E or
SV3F valve.
• Check for clogging in oil equalizing
circuit capillary and faulty operation in
check valve.
• Check for refrigerant entrapment inside
compressor.
No temperature • Check for disconnection of TK4 sensor.
change is detected • Check resistance characteristics of
by TK4 despite TK4 sensor.
compressor having • Check for connection error involving
been started. TK1, TK2, TK3, TK4, and TK5 sensors
• Check for faulty operation in SV3E or
SV3F valve.
• Check for clogging in oil equalizing
circuit capillary and faulty operation in
check valve.
• Check for refrigerant entrapment inside
compressor.
No temperature • Check for disconnection of TK5 sensor.
change is detected • Check resistance characteristics of
by TK5 despite TK5 sensor.
compressor having • Check for connection error involving
been started. TK1, TK2, TK3, TK4, and TK5 sensors
• Check for faulty operation in SV3E
valve.
• Check for clogging in oil equalizing
circuit capillary and faulty operation in
check valve.
• Check for refrigerant entrapment inside
compressor.
Air discharge • Check installation of TD3 sensor.
temperature (TD3) • Check connection of TD3 sensor
does not increase connector and wiring.
despite compressor • Check resistance characteristics of
3 being in operation. TD3 sensor.
• Check for defect in outdoor P.C. board
(I/F).