Mitsubishi Electric MUFZ-KJ-NAHZ Series, Руководство по обслуживанию

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32
MXZ Type
• Turn OFF inverter-controlled lighting equipment.
• Turn OFF the power supply and then turn it ON again.
• Press EMERGENCY OPERATION switch.
Is serial signal error indicated
6 minutes later?
Yes
• Reinstall either the unit or the light away
from each other.
• Attach a ¿ lter on remote control receiving
section of the indoor unit.
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 EMERGENCY OPERATION switch once.
Does the left lamp of the OPERATION
INDICATOR lamp light up?
<Con
¿ rmation of the power to the indoor unit>
Yes
No
Is serial signal error 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
Turn OFF the power supply.
Check once more if the indoor/outdoor connecting wire is not miswiring.
Remove the indoor/outdoor connecting wire from outdoor terminal block S3.
Bridge the outdoor terminal block S2 and S3. 1
1. Miswiring may damage indoor electronic control P.C.
board during the operation.
Be sure to con
¿ rm the wiring is correct before the opera-
tion starts.
C
(Refer to the next page.)
Yes
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