Toshiba MMY-MAP1006FT8(J)P-E Service Manual page 168

Check code
Outdoor 7-segment display
Main
remote
Check
Sub-code
controller
code
F08 F08
F10 –
F11 –
01: TS1 sersor trouble
F12 F12
03: TS2 sersor trouble
01: Compressor 1 side
F13 F13
02: Compressor 2 side
F15 F15
F16 F16
F17 F17
F18 F18
F23 F23
F24 F24
Location
of Description
detection
I/F TO sensor
trouble
–
Indoor Indoor TA
unit sensor trouble
–
Indoor Indoor TF
unit sensor trouble
–
I/F TS1/TS2
sensor trouble
IPDU TH sensor
trouble
I/F Outdoor
temperature
sensor wiring
– trouble (TE1,
TL1)
I/F Outdoor
pressure
sensor wiring
trouble
(PD, PS)
–
Indoor unit TOA sensor
trouble
–
Indoor unit TRA sensor
trouble
–
I/F PS sensor
trouble
–
I/F PD sensor
trouble
–
Check code detection
System
status condition(s)
All stop Sensor resistance is infinity
or zero (open/short circuit).
Stop of Sensor resistance is infinity
corresponding or zero (open/short circuit).
unit
Stop of Sensor resistance is infinity
corresponding or zero (open/short circuit).
unit
All stop Sensor resistance is infinity
or zero (open/short circuit).
All stop Sensor resistance is infinity
or zero (open/short circuit).
All stop During compressor
operation in HEAT mode,
TL1 continuously provides
temperature reading higher
than indicated by TL1 by at
least specified margin for 3
minutes or more.
All stop Readings of high-
pressure PD sensor and
low-pressure PS sensor
are switched.
Output voltages of both
sensors are zero.
Stop of
Sensor resistance is infinity
corresponding or zero (open/short circuit).
unit
Stop of
Sensor resistance is infinity
corresponding or zero (open/short circuit).
unit
All stop Output voltage of
PS sensor is zero.
All stop Output voltage of PD
sensor is zero (sensor
open-circuited).
Pd > 4.15MPa despite
compressor having been
turned off.
− 167 −
Check items (locations)
• Check connection of TO
sensor connector.
• Check resistance
characteristics of TO sensor.
• Check for trouble in outdoor
P.C. board (I/F).
• Check connection of TA
sensor connector and wiring.
• Check resistance
characteristics of TA sensor.
• Check for trouble in indoor
P.C. board.
• Check connection of TF
sensor connector and wiring.
• Check resistance
characteristics of TF sensor.
• Check for trouble in indoor
P.C. board.
• Check connection of TS1/
TS2 sensor connector
• Check resistance
characteristics of TS1/TS2
sensor.
• Check for trouble
• Trouble in IPM built-in
temperature sensor
Replace A3-IPDU P.C.
board.
• Check installation of
TE1 and TL1 sensors.
• Check resistance
characteristics of TE1 and TL1
sensors.
• Check for outdoor P.C.
board (I/F) trouble.
• Check connection of high-
pressure PD sensor connector.
• Check connection of low-
pressure PS sensor connector.
• Check for defect in pressure
sensors PD and PS.
• Check for trouble in outdoor
P.C. board (I/F).
• Check for deficiency in
compressive output of
compressor.
• Check connection of TOA
sensor connector.
• Check resistance
characteristics of TOA sensor.
• Check for trouble in outdoor
I/F P.C. board.
• Check connection of TRA
sensor connector.
• Check resistance
characteristics of TRA sensor.
• Check for trouble in outdoor
I/F P.C. board.
• Check for connection trouble
involving PS sensor and PD
sensor connectors.
• Check connection of PS sensor
connector.
• Check for defect in PS sensor.
• Check for deficiency in
compressive output of
compressor.
• Check for trouble in 4-way
valve.
• Check for trouble in outdoor
P.C. board (I/F).
• Check for trouble in SV4 circuit.
• Check connection of PD
sensor connector.
• Check for trouble in PD
sensor.
• Check for trouble in outdoor
P.C. board (I/F).