Toshiba HWS-1501CSHM3-E(-UK), HWS-802XWHT6-E, HWS-802H-E, HWS-802XWHM3-E, HWS-3001CSHM3-E(-UK) 135

No.	Exchange parts name	Work procedure	Remarks
17	Water heat
		• Close the water piping source valve and the valve
	exchanger assembly
		of water pipe connected to the hydro unit, and	Water
		then remove the refrigerant and water piping.
			piping fixing

•Perform refrigerant recovery with the outdoor unit.

•Disconnect all the power source cable, outdoor unit connection cable, and cylinder connection cable.

1.How to remove

1)Perform the step 1-1, step 5, 6, and 8. 2)Remove the water pipe fixing board.

	(ST2T Ø4 × 8, 2 screws)
	3)Remove the refrigerant piping fixing board.	Refrigerant piping
	(ST2T Ø4 × 8, 3 screws)
	4)Remove the nut of the heater connection.	fixing board
	5)Remove the fixed screws of the electric parts box
	fixing board.
	(ST2T Ø4 × 8, 4 screws)
	6)Remove the side reinforcing board (left).	Nut
	(ST2T Ø4 × 8, 6 screws) 3 for inside, 3 for outside
	7)Remove the water heat exchanger fixing band.
	(ST2T Ø4 × 8, 6 screws)
	8)Remove the water heat exchanger assembly.	Electric parts
		box fixing
	The heater connection uses a packing for water
	seal. Be careful not to scratch the packing;
	otherwise, water leakage may occur.
2. How to attach
	1)Attach a new water heat exchanger assembly in the	Side reinforcing board (left)
	reverse order of the removal.
	2)Restore all piping and wiring as in the original state,
	and check that there is no water or refrigerant
	leakage.

•After the water heat exchanger assembly replacement repair, open the water supply source valve and water piping source valve to pass water through the hydro unit, and check that the connection has no water leakage.

•After connecting the refrigerant pipe, check that the connection has no refrigerant leakage.

Water heat exchanger fixing band

The piping structure slightly differs in 14kW and 8kW specifications.

Water heat exchanger assembly

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