Toshiba HWS-P805XWHM3-E - Page 90

89
[A10] Error Freeze prevention control (2) (Cooling only)
No
Note: Determined at TWO-TWI temperature during operation at a pressure of Ps
No
Yes
Yes
Sufficient refrigerant
Operating with
no load on water
circuit?
Replace flow switch
Remove waste
Flow switch is normal
Secure water
circulation amount
Circulation flow
shortage
Replace control
board.
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
Recharge refrigerant
Raise the set water temperature.
Add fan coils.
No
Excess air
noise comes from
inside pump
Chattering
noise comes from
flow switch
Start
No
No
Yes
Yes
Yes