79
30AW
Diagnostic
6
Fault code 9 – Flow Switch error / Water Pump
Pump rotates?
Flow switch is
connected to board?
Connect ow switch
connector to board
Perform air vent
Excess air noise comes from
inside the pump?
Built-in pump is
connected to board?
Connect pump
connector to board
Flow switch is
normal?
Replace ow switch
Chattering noise comes from
ow switch?
Replace pump
Pump stops 2-3 minutes after
its rotation started?
Dirt clogging inside
water circuit
Remove waste
12 meters or longer water
pipe to a branch, or 5 or
less branches
Fit buer tank and
the second pump
TR sensor characteristic is correct?
Replace TR sensor
lf ecalper ro hcattA ?lamro
n si hctiws wolF ow switch
Check G.M.C. Board –
replace if defective
Flow shortag