Mitsubishi SUZ-KA09NA, Руководство по обслуживанию

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28
M How to check miswiring and serial signal error
• Turn OFF inverter-controlled lighting
equipment.
• Turn OFF the power supply and then
turn ON again.
• Press TEST button twice.
A
Is the self-check
of the remote con-
troller indicated 6
minutes later?
B
Yes
No
Turn OFF the power supply.
Is there rated voltage in the power supply?
Yes
No
Turn ON the power supply.
Check the power supply.
Is there rated voltage between outdoor terminal block S1 and S2?
No
Check the wiring.
Press TEST button twice.
Does POWER lamp on remote controller light up?
<Confirmation of the power to the indoor unit>
Yes
No
Is the self-check of the remote controller
indicated 6 minutes later?
Yes
No
Is there any miswiring,
poor contact, or wire
disconnection of the
indoor/outdoor connect-
ing wire?
Yes Correct them.
No
A
Turn OFF the power supply.
Check once more if the indoor/outdoor
connecting wire is not miswiring.
Short-circuit outdoor terminal block S2
and S3.*
1
B
*
1. Miswiring may damage indoor electronic control P.C.
board during the operation.
Be sure to confirm the wiring is correct before the opera -
tion starts.
Turn ON the power supply.
Does the LED on the inverter P.C. board or the outdoor electronic control P.C.
board repeat "3.6-second-OFF and 0.8-second-ON quick blinking"? *
3
Yes
No
(Lighted
or not
lighted)
Replace the inverter P.C. board or the outdoor
electronic control P.C. board.*
2
*2. Be careful of the residual voltage of smoothing
capacitor.
Yes
*3. Be sure to check this within 3 minutes after turning ON.
After 3 minutes, LED blinks 6 times. Even when the
inverter P.C. board or the outdoor electronic control P.C.
board is normal, LED blinks 6 times after 3 minutes.
Is the bus-bar voltage of the inverter P.C. board or the outdoor electronic control P.C. board normal. (Refer
to "10-6. TEST POINT DIAGRAM AND VOLTAGE".)
Yes
No
Check of power supply.
(Refer to 10-5. .)
Replace the indoor
controller P.C. board.
Is there amplitude of 10 to 20 VDC between indoor terminal block S2
and S3? <Confirmation of serial signal>
Yes
Check the wiring
If there are any error of the indoor/outdoor connecting wire:
such as the damage of the wire, intermediate connection,
and/or poor contact to the terminal block, replace the indoor/
outdoor connecting wire.
No
Is there rated voltage between indoor termi-
nal block S1 and S2?
<Confirmation of power voltage>
No Yes
Is there any error of the indoor/out-
door connecting wire, such as the
damage of the wire, intermediate
connection, poor contact to the
terminal block?
Replace the indoor/outdoor
connecting wire.
No Yes
No
Yes
Turn OFF the power supply.
Remove the short-circuit between outdoor terminal block S2 and S3.
Turn ON the power supply.
Is there rated voltage between indoor terminal block S1 and S2?
<Confirmation of power voltage>
Yes
No
Is there any error of the indoor/out-
door connecting wire, such as the
damage of the wire, intermediate
connection, poor contact to the
terminal block?
Reinstall either
the unit or the
light away from
each other.
OCH467C