Toshiba HWT-601XWHM3W-ETR Service Manual page 128

Air to water heat pump
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Outdoor LED
Check code
indication
[H01]
[H02]
(No specific description indicates outdoor unit parts.)
[Compressor break down]
Power voltage is normal
AC220-240 V±10%
Wiring connection is normal
Compressor lead (Board side, compressor
side reactor lead, power lead)
Abnormally over loaded
Check outdoor control board
If defective, replace it
[Compressor lock]
Power voltage is normal
AC220-240 V±10%
Wiring connection is normal
Compressor lead (board side,
compressor side) reactor, power lead
Compressor is normal
Refrigerant stays inside
Pulse motor valve operates
normally
Check outdoor board
If defective, replace it
127
Check and Action procedure
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1705
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1705
Improve power line
Check and correct wiring
connection
Deal with or remove causes
Improve power line
Check and correct
wiring connection
Lock compressor and
replace it.
TE, TS sensor pulse
motor valve check
If defective, replace

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