Checklist; Before Receiving Repair Requests; Service Inspection List - Mitsubishi Electric GK-2509YS2-CE 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 or ON/OFF
switch on the product 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 or ON/OFF switch on the product is operated?
Are the propeller fans rotating?
Does the product operate without abnormal vibrations or sounds?
Cause
Is the circuit breaker on the distribution
board turned on?
When using an external ON/OFF switch,
is the switch turned on?
Is the ON/OFF switch on the product
turned on?
Is the wiring correct?
Is there any connection failure of the wir-
ing?
Is the rated power supplied to the prod-
uct?
Are the motors conducted?
Does any foreign matter 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 HIGH/LOW switch on the product
correctly operated?
Does any foreign matter 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.
Turn on the ON/OFF switch.
Check the wiring.
Check that the wiring connections are se-
curely performed.
Check that the rated power is supplied to the
product.
Replace the faulty motors.
Remove any foreign matter.
Check the propeller fans and orifices, and
replace any deformed components.
Replace the deformed propeller fans.
Operate the HIGH/LOW switch correctly
in accordance with the Operating and
Installation instructions.
Remove any foreign matter.
Check the propeller fans and orifices, and
replace any deformed components.
Replace the deformed propeller fans.
Check the installation condition of the product.
[1] If the circuit breaker on the distribution board is off, turn it on.
[2] Power failure has occurred.
[1] If any foreign matter is caught on the propeller fans, remove it.
[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