Toshiba HWT-601XWHT6W-E - Page 112

111
[A08] Low pressure sensor operation error
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
Start
No
Yes
Raise set temperature
Replace flow sensor
Yes
(Cooling overload operation)
Continued
operation at low outside
temperature and at 15°C or lower
set temperature
No
Defrost outdoor unit
where frost remains
Yes
Defrosting
takes 15 mins or longer
(Frost remains)
No
Replace low pressure sensor
No
No
Low pressure sensor
is normal
Yes
Yes
Yes
No
Flow rate
detected by flow sensor is
almost same as actual
value
Yes
circulation flow shortage
Check water
heat exchange
control board
If defective, replace it
PC board
MCC-1753
MCC-1755