Toshiba HWS-1402XWHM3-E 11How to Exchange Main Parts, Hydro Unit, 127, Work procedure Remarks

11How to Exchange Main Parts

WARNING

<Turn off the power breaker>

Because the electrical components are energized with high voltage, always turn off the power breaker before starting to work.

<Check>

After a repair is complete, perform a trial operation (after attaching the front panel, upper and lower cabinets, and side cabinet) and check that no abnormality including smoke or abnormal noise occurs. Failure to do so may cause a fire or an electric shock. Place the cabinets before making a trial operation.

<Watch out for fire>

Observe the following instructions when repairing the refrigerant cycle.

(1)Watch out for surrounding fire. Always put out the fire of stove burner or other devices before starting the repair. Should the fire fail to be put out, the oil mixed with refrigerant gas could catch fire.

(2)Do not use a welder in a closed room.

A room with no ventilation may cause carbon monoxide poisoning.

(3)Keep away flammable materials.

The materials may catch the fire of a welder.

CAUTION

<Wear gloves>

Wear gloves (∗) when performing repair.

Failure to do so may cause an injury when accidentally contacting the parts.

∗: Thick gloves such as cotton work gloves

1. Hydro Unit

No.	Exchange parts name		Work procedure	Remarks
1	Common procedure
			Wear gloves when performing the work.
			Failure to do so may cause an injury when
			accidentally contacting the parts.
	Front panel	1. How to remove
		1)Stop the hydro unit operation, and turn off the power
			breaker.
		2)Remove the front panel.
			(ST1T Ø4 × 10 6 screws)
		3)After unscrew the screws, remove the front panel by
			pulling it toward you.	Front panel
	Electric parts box	4)Remove the electric parts box cover (lower).
	cover (lower)		(ST2T Ø4 × 8 2 screws)
		5)Disconnect the power source cable and outdoor unit
			connecting cable from the terminal block.	Electric parts
	Electric parts box	6)Remove the electric parts box cover (upper).
				box cover (lower)
	cover (upper)		(ST2T Ø4 × 8 4 screws)
		7)Disconnect the remote controller connecting cable
			from the CN41 connector of the water heat
			exchange board.
		2. How to attach		Electric parts
		1)Connect the remote controller connecting cable to		box cover (upper)
			the water heat exchange board.
		2)Attach the electric parts box cover (upper).
		3)Connect the power source cable and outdoor unit
			connecting cable to the terminal block, and fix with
			the cord clamp.
		4)Attach the electric parts box cover (lower).
		5)Attach the front panel.

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