Toshiba HWS-803XWHM3-E Service Manual page 115

Outdoor LED
Check code
indication
<Indication 1> <Indication 2>
<Indication 1> <Indication 2>
<Indication 1> <Indication 2>
[P05] <Indication 1> <Indication 2>
[P07]
<Indication 1> <Indication 2>
(No specific description indicates outdoor unit parts.)
[Case thermostat operation] → See [H04] details
[Power source failure (Vdc)] → See [P05] details
[Hi pressure protection operation] → See [P20] details
[Power source failure (voltage defective, open phase)]
Power voltage abnormal drops or rise
(AC220-230 V±10 %: single phase type)
(AC380-400 V±10 %: 3 phase type)
Check outdoor control board
If defective, replace it
[Heat sink overheat failure]
HWS-803H-E to 1603H-E
The screws are loose in
motor drive element,
Q200/300/400, of outdoor
control board and rectifier,
DB01/02/03. (MCC-1571)
Radiation grease was not
applied to backside of
Q200, DB01, DB02,
or DB03.
Is not the ventilation flue
of the heat sink blocked?
Is not the fan blocked?
(Short-circuit, etc.)
Check outdoor control board
If defective, replace it
114
Check and Action procedure
PC-Board
803H-E(MCC-1571)
1103 to 1403H-E (MCC-1571)
1103 to 1603H8(R)-E (MCC 1596)
HWS-1103H8(R)-E to 1603H8(R)-E
Is there no loosening
of screws of motor
drive element of outdoor
P.C. board (MCC-1596)
Q201?
Did not forget to apply
radiation grease to
rear side of Q201?
Check electric work
Apply radiation
grease as needed
Tighten screws
(Be sure to place
back the insulation
sheet between
Q300/400 and
the heat sink.)
Remove obstacles,
Deal with short circuit