Toshiba HWT-601XWHM3W-ETR Service Manual page 132

Outdoor LED
Check code
indication
[P05]
[P07]
[P15]
(No specific description indicates outdoor unit parts.)
[Power source trouble]
Power voltage is normal
AC220-240 V±10%
Check outdoor control board
If defective, replace it
[Heat sink overheat trouble]
Is there any looseness in the screw
stop of the heat sink?
Are radiation grease properly applied?
NO
Does something block the
ventilation around the heatsink?
Does something block air flow
from the fan?
(Short circuit etc.)
NO
Check outdoor control board
If defective, replace it
[Gas leak detection]
No gas leakage.
Appropriate refrigerant amount
Pulse motor valve is normal
Service valve is fully opened
Piping collapse
Temperature sensor check
Discharge sensor
Suction sensor
Check outdoor control board
If defective, replace it
131
Check and Action procedure
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1675, MCC-1705
YES
YES
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1705
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1675
Check electric work
Apply radiation grease
to objective, retightening
of screw
Remove blocking matter,
Short circuit improvement
Correct defective portion
Re-charge refrigerant
Correct defective portion
Replace defective parts
Open fully service valve
Repair or replace pipe
Correct connector
Replace sensor