Toshiba ESTIA HWS-1501CSHM3-E, Service Manual

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[H02] <Indication 1> <Indication 2> [Compressor lock]
[H04] <Indication 1> <Indication 2> [Case thermostat operation]
Check code
Outdoor LED
indication
Check and Action procedure
(No specific description indicates outdoor unit parts.)
Improve power line
Check outdoor board
If defective, replace it
No
Yes
Compressor is normal.
Lock compressor and
replace it.
No
Yes
Refrigerant stays inside.
No
Yes
TE, TS sensor pulse
motor valve check
If defective, replace
Pulse motor valve operates
normally. No
Yes
Wiring connection is normal.
Compressor lead (board side,
compressor side) reactor, power lead
Check and correct
wiring connection
No
Yes
Power voltage is normal.
(AC220-230 V±10 %: single phase type).
(AC380-400 V±10 %: 3 phase type).
PC-Board
803H-E(MCC-1571)
1103 to 1403H-E (MCC-1571)
1103 to 1603H8(R)-E (MCC 1596)
CN609 connector and case
thermostat is normal. Correct connector
Replace case thermostat
Check for piping collapse and break.
If defective, repair or replace it.
No
Yes
If case thermostat is short circuited,
cooling and heating can operate. Check outdoor board
If defective, replace it
No
Yes
No gas leakage.
Enough Refrigerant. Correct defective portion
Re-charge refrigerant
No
Yes
Service valve is fully opened.
Open fully service valve
No
Yes
Pulse motor valve is normal.
Correct defective portion
Replace defective parts
No
Yes
PC-Board
803H-E(MCC-1571)
1103 to 1403H-E (MCC-1571)
1103 to 1603H8(R)-E (MCC 1596)