Checklist; Before Receiving Repair Requests; Service Inspection List - Mitsubishi Electric AH-1006S1-E Handbook

7-2 Checklist

No. Error
1 The product
does not oper-
ate.
2 The product
does not oper-
ate properly.
The fan does
not rotate.
The fan
speed cannot
be changed.
3 The product
generates ab-
normal sounds
or vibrations.

8. Before receiving repair requests

Frequently asked question
The product does not operate even though
the external ON/OFF switch is turned on.
The product generates abnormal sounds
or vibrations.

9. Service inspection list

Location
Is the power source securely connected?
Electric
wiring
Is the wiring correct?
Is the main unit securely mounted?
Is grounding established properly?
Does the product operate as described in the Operating and Installation instructions
Appliance
when the external ON/OFF switch is operated?
Are the propeller fans rotating?
Does the product operate without abnormal vibrations or sounds?
Cause
Is the circuit breaker turned on?
Is the external ON/OFF switch turned
on?
Is the wiring correct?
Is there any connection failure of the
wiring?
Is the rated power supplied to the
product?
Are the motors conducted?
Do any objects get caught in the gaps
between the propeller fan and orifice?
Do any of the propeller fans contact
with the orifice?
Are the propeller fans deformed?
Is the external HIGH/LOW switch cor-
rectly operated?
Do any objects get caught in the gaps
between the propeller fan and orifice?
Do any of the propeller fans contact
with the orifice?
Are the propeller fans deformed?
Is the product securely mounted?
Turn on the breaker.
Turn on the external ON/OFF switch.
Check the wiring.
Check that the wiring connections are securely
performed.
Check that the rated power is supplied to the
product.
Replace the faulty motors.
Remove the objects.
Check the propeller fans and orifices, and re-
place any deformed components with new ones.
Replace the deformed propeller fans.
Operate the HIGH/LOW switch correctly in ac-
cordance with the Operating and Installation
instructions.
Remove the objects.
Check the propeller fans and orifices, and re-
place any deformed components with new ones.
Replace the deformed propeller fans.
Check the installation conditions of the product.
[1] If the circuit breaker is off, turn it on.
[2] Check if power failure has occurred.
[1] If any objects are caught on the propeller fans, remove them.
[2] If the guard is almost detached (or tilted), fix it firmly.
[3] If any of the mounting screws are loose, tighten them properly.
Inspection Item
─ 10 ─
Action
Response
Check Result