Toshiba MMY-MAP1006FT8(J)P-E Service Manual page 170

Check code
Outdoor 7-segment display
Main
remote
Check
Sub-code
controller
code
H07 H07 –
01: TK1 sensor trouble
02: TK2 sensor trouble
04: TK4 sensor trouble
05: TK5 sensor trouble
H08 H08
H15 H15 –
Location
of Description System status
detection
I/F Low oil level All stop
protection
I/F Trouble in All stop
temperature
sensor for oil
level detection
All stop
All stop
All stop
I/F TD2 sensor All stop
miswiring
(incomplete
insertion)
− 169 −
Check code detection
Check items (locations)
condition(s)
Operating compressor <All outdoor units in
detects continuous state of corresponding line to be
low oil level for about 2 hours. checked>
• Check balance pipe
service valve to confirm full
opening.
• Check connection and
installation of TK1,
TK2, TK4, and TK5
sensors.
• Check resistance
characteristics of TK1,
TK2, TK4, and TK5
sensors.
• Check for gas or oil leak in
same line.
• Check for refrigerant
problem inside
compressor casing.
• Check SV3A, SV3B,
SV3C, SV3D valves for
trouble.
• Check oil return circuit of
oil separator for clogging.
• Check oil equalizing circuit
for clogging.
Sensor resistance is infinity • Check connection of TK1
or zero (open/short circuit). sensor connector.
• Check resistance
characteristics of TK1
sensor.
• Check for trouble in outdoor
P.C. board (I/F).
Sensor resistance is infinity • Check connection of TK2
or zero (open/short circuit).
sensor connector.
• Check resistance
characteristics of TK2
sensor.
• Check for trouble in outdoor
P.C. board (I/F).
Sensor resistance is infinity • Check connection of TK4
or zero (open/short circuit). sensor connector.
• Check resistance
characteristics of TK4
sensor.
• Check for trouble in outdoor
P.C. board (I/F).
Sensor resistance is infinity
• Check connection of TK5
or zero (open/short circuit). sensor connector.
• Check resistance
characteristics of TK5
sensor.
• Check for trouble in outdoor
P.C. board (I/F).
Discharge temperature of • Check installation of TD2
sensor.
(TD2) does not increase
despite compressor 2 being • Check connection of TD2
sensor connector and
in operation.
wiring.
• Check resistance
characteristics of TD2
sensor.
• Check for trouble in outdoor
P.C. board (I/F).