Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 165

⑦Drain pipe (continued)
Drain pump operation
○In case electrical wiring work finished
Drain pump can be operated by remote controller (wired).
For the operation method, refer to Operation for drain pump in the installation manual for wiring
work.
○In case electrical wiring work not finished
Drain pump will run continuously when the dip switch"SW7-1" on the indoor unit PCB is turned ON, the Connec-
tor CNB is disconnected, and then the power supply (230VAC on the terminal block ① and ②) is turned ON.
Make sure to turn OFF "SW7-1" and reconnect the Connector CNB after the test.
⑧Wiring-out position and wiring connection
● Electrical installation work must be performed according to the installation manual by an
electrical installation service provider qualified by a power provider of the country, and be
executed according to the technical standards and other regulations applicable to electrical
installation in the country.
Be sure to use an exclusive circuit.
● Use specified cord, fasten the wiring to the terminal securely, and hold the cord securely in
order not to apply unexpected stress on the terminal.
● Do not put both power source line and signal line on the same route. It may cause miscommu-
nication and malfunction.
● Be sure to do D type grounding work.
● For the details of electrical wiring work, see attached instruction manual for electrical wiring
work.
1. Remove a lid of the control box (3 screws) and the wiring cover (2 screws).
2. Hold each wiring inside the unit and fasten them to terminal block securely.
3. Fix the wiring with clamps.
4. Install the removed parts back to original place.
Power source side
terminal block
Earth
Indoor power source line
Remote controller line
⑨Check list after installation
●Check the following items after all installation work completed.
Check if
The indoor and outdoor units are fixed securely?
Inspection for leakage is done?
Insulation work is properly done?
Water is drained properly?
Supply voltage is same as mentioned in the model name plate?
There is mis-wiring or mis-connection of piping?
Earth wiring is connected properly?
Cable size comply with specified size?
Any obstacle blocks airflow on air inlet and outlet?
Earth
(Shielded cord)
Signal side terminal block
Power source line clamp
Signal line (Shielded cord)
Expected trouble Check
Falling, vibration, noise
Insufficient capacity
Water leakage
Water leakage
PCB burnt out, not working at all
PCB burnt out, not working at all
Electric shock
PCB burnt out, not working at all
Insufficient capacity
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PJC012D013
A