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Toshiba
[H02]
<Indication 1> <Indication 2>
[Compressor lock]
[H04]
<Indication 1> <Indication 2>
[Case thermostat operation]
[L10]
<Indication 1> <Indication 2>
[Model not set] Only when service board is used
Check code
Outdoor LED
indication
Check and Action procedure
(No specific description indicates outdoor unit parts.)
Power voltage is normal.
230ACV
±
23V
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
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
Cut jumper line by following the instruction
comes with the service board package
+00A09-002_01EN_SVM_ALL_Air_to_Water.book Page 92 Monday, October 5, 2009 2:09 PM