Toshiba MMW-AP0271LQ-E Service Manual page 53

Check code
Main Outdoor 7-segment display
remote
Check
Sub-code
controller
code
SMMS-i
(4 series)
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
Location
Description System status
of
detection
I/F Oil level
All stop
detection
circuit error
Error detection
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 TK3 despite
compressor 3 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.
– 53 –
Indoor unit (including Hot Water Module)
Check items (locations)
• Check for disconnection of TK1
sensor.
• Check resistance
characteristics of TK1 sensor.
• Check for connection error
involving 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.
• Check for disconnection of
TK2 sensor.
• Check resistance
characteristics of TK2 sensor.
• Check for connection error
involving 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.
• Check for disconnection of
TK3 sensor.
• Check resistance
characteristics of TK3 sensor.
• Check for connection error
involving 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.
• Check for disconnection of
TK4 sensor.
• Check resistance
characteristics of TK4 sensor.
• Check for connection error
involving 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.
• Check for disconnection of
TK5 sensor.
• Check resistance
characteristics of TK5 sensor.
• Check for connection error
involving 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.