Toshiba HWT-602S21SM3W-E(TR) Service Manual page 154

Outdoor LED
Check code
indication
[F12]
[F13]
[F15]
[F24]
[F31]
(No specific description indicates outdoor unit parts.)
[Suction temperature sensor (TS) failure]
TS sensor connector is
connected
Yes
TS sensor resistance
characteristic is normal
Yes
Replace outdoor control board
[Heat sink temperature sensor (TH) failure]
Replace outdoor control board
[Heat exchanger sensor (TE, TS) wrong wiring]
TE and TS sensor is
attached to the correct position.
Yes
TE sensor resistance
characteristic is normal
Yes
TS sensor resistance
characteristic is normal
Yes
Replace outdoor control board
[High pressure sensor (PD) failure]
PD sensor connector is
connected
Yes
PD sensor is normal
Yes
Replace outdoor control board
[EEPROM failure]
Check outdoor control board
If defective, replace it
153
Check and Action procedure
No
No
Refer to the
characteristic table
on page 137
PC board
<401, 601> MCC-1768
<801, 1101, 1401> MCC-1675
<801, 1101, 1401>MCC-1781 (3 phase)
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1705
<1401> MCC-1758
<801, 1101, 1401>MCC-1780 (3 phase)
No
No
Refer to the
characteristic table
on page 137
No
Refer to the
characteristic table
on page 137
PC board
<401, 601> MCC-1768
<801, 1101, 1401> MCC-1675
<801, 1101, 1401>MCC-1781 (3 phase)
No
No
PC board
<401, 601> MCC-1768
<801, 1101, 1401> MCC-1675
<801, 1101, 1401>MCC-1781 (3 phase)
PC board
<401, 601> MCC-1768
<801, 1101, 1401> MCC-1675
<801, 1101, 1401>MCC-1781 (3 phase)
Correct TS sensor
connection
Replace TS sensor
Correct sensor attaching
position
Replace TE sensor
Replace TS sensor
Correct PD sensor
connection
Replace PD sensor