Fault Finding - Zip InLine ES3 Installation, Maintenance And User Instructions

Fault fi nding
Repairs should only be carried out by competent persons familiar with electric
instantaneous water heaters.
All service work should be performed by an authorized Zip service
engineer – for details of the full range of services available call Zip Service on:
0845 602 4533.
When calling for service, please always specify the appliance model and serial
number.
The following table will be helpful in determining the causes of some common
problems and their solutions
LED Functions
green LED fl ashing
green LED constantly on
red LED constantly on
red LED fl ash code:
Long- short-short-short-long
Long-short-short-short-short
Problem
No water fl ows
Water fl ows more slowly
than expected
The heater switches
itself on and off
ES3, ES4 & ES6 Instructions. Issue: No. 2
Standby mode
Appliance is heating water
The required outlet temperature cannot
be achieved at maximum power
Inlet temperature too high
Temperature sensor faulty
Possible cause
Water supply is turned off
The Jet Regulator is not
fi tted
Water pressure is not
suffi cient
Dirt in the pipes
Water pressure is varying,
fl ow rate is too low
Page 14
Solution
Open the main water
valve / shut off valve
Fit the correct Jet
Regulator (see Fig. 5)
Check the water fl ow
pressure, check the water
fl ow adjustment. See fi g. 8
Remove any dirt from the
fi lter, valves and / or taps,
check the technical data
Remove any dirt,increase
the fl ow water pressure,
close other taps, open the
shut off valve further
February / 2012