Toshiba MMY-MAP1006FT8(J)P-E Service Manual page 171

Check code
Outdoor 7-segment display
Main
remote
Check
Sub-code
controller
code
01: TK1 oil circuit trouble
02: TK2 oil circuit trouble
04: TK4 oil circuit trouble
05: TK5 oil circuit trouble
H16
H16
–
J03 –
J10
J10
–
J11 – –
L02 L02 –
L03 – –
L04 L04 –
Location
System
of Description
status
detection
I/F
Oil level All stop
detection
circuit trouble
Duplication of Stop of
Indoor
FS units corresponding
unit
unit(s)
FS unit overflow
Indoor
trouble All stop
unit
FS unit
Stop of
Temperature
Indoor
corresponding
sensor(TCS)
unit
unit(s)
trouble
Indoor
Outdoor units Stop of
unit
model corresponding
disagreement unit
trouble
Indoor Duplicated Stop of
unit indoor header corresponding
unit unit
I/F Duplicated All stop
outdoor line
address
− 170 −
Check code detection
Check items (locations)
condition(s)
• Check for disconnection of TK1 sensor.
• Check resistance characteristics of
TK1 sensor.
No temperature •
Check for connection trouble involving
change is detected
TK1, TK2, TK4, and TK5 sensors
•
by TK1 despite
Check for clogging in oil equalizing
compressor 1
circuit capillary and faulty operation in
having been started.
check valve.
•
Check for refrigerant entrapment inside
compressor.
• Check for disconnection of TK2 sensor.
•
Check resistance characteristics of
TK2 sensor.
No temperature
•
Check for connection trouble involving
change is detected
TK1, TK2, TK4, and TK5 sensors
by TK2 despite
•
Check for clogging in oil equalizing
compressor 2
circuit capillary and faulty operation in
having been started.
check valve.
•
Check for refrigerant entrapment inside
compressor.
Check for disconnection of TK4 sensor.
•
• Check resistance characteristics of TK4
sensor.
No temperature
•
Check for connection trouble involving
change is detected
TK1, TK2, TK4, and TK5 sensors
by TK4 despite
•
Check for clogging in oil equalizing
compressor having
circuit capillary and faulty operation in
been started.
check valve.
•
Check for refrigerant entrapment inside
compressor.
• Check for disconnection of TK5 sensor.
•
Check resistance characteristics of
TK5 sensor.
No temperature
•
Check for connection trouble involving
change is detected
TK1, TK2, TK4, and TK5 sensors
by TK5 despite
•
Check for clogging in oil equalizing
compressor having
circuit capillary and faulty operation in
been started.
check valve.
•
Check for refrigerant entrapment inside
compressor.
More than one FS units
have been set up in one
・Check indoor unit(s)-FS unit(s) cable
refrigirant line.
・Check float switch connector
・Float switch operates
・Check operation of drain pump.
・Float switch circuit is
・Check drain pump circuit
open-circuited or
・Check drain pipe for clogging
disconnected
・Check for defect indoor PC board.
at connector.
・Check connection of TCS sensor
connector
Sensor resistance is
・Check resistance characteristics of
infinity or zero(open/
TCS sensor.
short circuit)
・Check for defect FS unit PC board.
• Check outdoor unit model.
In case of different
outdoor unit
(Check whether the
(Not corresponded to
outdoor unit corresponds
Air to Air Heat
to Air to Air Heat
Exchanger type)
Exchanger type or not.)
There are more than • Check indoor addresses.
one header units in • Check for any change
group.
made to remote controller
connection (group/
individual) since indoor
address setting.
There is duplication in • Check line addresses.
line address setting for
outdoor units belonging
to different refrigerant
piping systems.