ACD320user manual
Fault Diagnosis and countermeasures
U-23
Earthing short circuit
failure.
The motor has earthing short circuit.
Change cable or motor.
U-25
PID disconnection
failure.
Wiring loose
Analog value input circuit failure.
Check wiring
Look for service from
manufacturer or agent
U-26
Lack of water when
constant pressure
water supply
Lack of water
Check the pool.
Input voltage is too low
Check the input voltage
P.oFF Under voltage stop
Dispear when power off
Normal phenomenon
Missing input phase
0.0.0.0.0. Keywords is valid
User’s keywords are valid.
Normal sleep
Please check the input voltage
When it dispays “0.0.0.0.0.”,
please input the set keywords, if
the user have forgotten the
keywords, look for service from
agent
Normal phenomenon
EoPP
Constant pressure
water supply sleeping
Set of sleeping and revival parameter is
wrong
Please set the parameter F7.21～
F7.24 correctly.
7.2 Fault and Countermeasures
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