Toshiba HWT-601XWHM3W-ETR - Page 115

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[A11] Operation of the release protection
Replace flow sensor
Remove waste
Flow sensor is normal
Secure water
circulation amount
Waste stuck inside
water circuit
12 M or longer water
pipe to a branch,
or 5 or less branches
Remove sufficiently
excess air
Place buffer tank and
the second pump
No
Excess air
noise comes from
inside pump
circulation flow
shortage
Start
No
No
Yes
Attach TWI sensor
No
TWI sensor is
attached to pipe
Yes
Replace TWI or TWO sensor
No
TWI and TWO
sensor characteristics
are normal
Yes
Yes
Yes
Yes
No
Replace flow sensor
Flow rate
detected by flow sensor is
almost same as actual
value
Check water
heat exchange
control board
If defective, replace it
PC board
MCC-1753
MCC-1755