Troubleshooting - enware CUBISTA ENM6420 Installation And Maintenance Instructions Manual

troubleshooting

FAULT/SYMPTOM
Leaking or dripping water from
outlet
No water flow from tap
Note: Small sized storage type electric water heaters can often cause excessive pressure in the hot water line (down
stream to the heater) while heating, typically above 1000kPa. This excessive pressure may cause the sensor tap solenoid to
malfunction and must be regulated to under 500kPa as required by AS/NZS 3500.1-2003 Clause 3.3.4 – Maximum pressure
within buildings. PLV installed at the inlet of the heater does not limit the outlet pressure of heater. Any malfunction due to
excessive pressure is not covered by warranty.
Water is leaking from base of tap
body
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CAUSE
Solenoid has debris caught in the
mechanism
Supply water pressure is too high.
Incorrect installation
Solenoid valve is damaged
Water turned off
Power supply is turned off
Solenoid seized up due to excessive
water pressure or water hammer
Electronic component failure –
solenoid valve, sensor, battery or
transformer
Power supply failure
Solenoid valve is damaged or
o-rings are worn
Tap body shroud is not fully engaged
into tap hob base
Solenoid valve loose in body
RECTIFICATION
Remove solenoid and inspect solenoid
membrane for debris. Remove debris and/
or replace solenoid membrane if damaged.
Follow steps in Maintenance and Servicing
Instructions.
Check water pressure and install a pressure
reduction valve if greater than 500 kPa.
Replace Solenoid valve. Follow steps in
Maintenance and Servicing Instructions.
Turn water on.
Turn on power supply.
Release water pressure from solenoid,
either by disconnecting the flexible hose, or
by dismantling the tap and unscrewing the
solenoid. Sensor tap should start working
again. Install a Pressure Reduction Valve
(PRV) before the tap to prevent the problem
recurring.
Check TPR valve is working on hot water
heater. Replace if necessary.
Follow steps in Maintenance and Servicing
instructions, and replace if needed.
Check that the red light turns on in the
sensor lens for a few seconds when power
is first connected. If it does, the problem is
likely to be with the solenoid. If not, either
sensor, or power pack, or both may be faulty.
Replace battery if required.
Check that the power cable is not pinched
between the fixing clip and tap body. Replace
sensor if cable is damaged
Remove Solenoid and inspect. Replace
solenoid or o rings if damaged. Follow steps
in Maintenance and Servicing instructions.
Ensure internal components are aligned and
that shroud is fully engaged into hob base,
being careful not to pinch any electronic
cables
Ensure solenoid valve is secure in tap
body – tighten if needed, however do not
overtighten. Follow steps in Maintenance and
Servicing instructions.
Call 1300 369 27 21