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23. TROUBLE-SHOOTING AND REPAIR
PROBLEM/SYMPTOM CAUSE REPAIR
The valve doesn’t open: neither Water is not reaching Ensure that Master-
automatically per program nor by the system: Electric valve is open: clean
manually-operated computer command not reaching filter; check the
activation. the valve. extension wire.
No display. Malfunction in power- Check power source,
system or faulty battery. the transformer or
replace the battery.
Sensor symbol permanently blinking The sensor bridge is Replace sensor or
and valve does not open. disconnected. repair connection.
Valve does not close although “click” Valve handle not in AUTO Move valve handle to
heard when activated. mode; dirt and scale in valve; AUTO mode; clean the
malfunction in valve such valve; replace the valve.
as a torn diaphragm.
Controller operations corrupted. Memory flawed. Press RESET button,
Reset hour and date.
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