Elson EOS7 - Commissioning Procedure; Troubleshooting and Fault Finding

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4.0 COMMISSIONING
5.0 FAULT FINDING
DO NOT SWITCH ON HEATER UNTIL IT IS FILLED WITH WATER
4.1 Fill with water by opening tap and leaving open until a full bore of water ows
from the outlet.
4.2 Switch on water heater at double pole isolating switch. The heater will heat
water to the temperature set on the thermostat.
4.3 Check water is heating correctly.
7 litre 3kW - after 10 mins water temperature will increase by 60°C
4.4 Pass instruction leaet to user and draw their attention to the following two
statements:
DO NOT USE HEATER IF THE WATER IS THOUGHT TO BE FROZEN
Switch off immediately at the isolating switch if the water does not ow freely.
Any damage resulting from freezing will not be covered by the guarantee.
DURING HEATING THE OUTLET WILL DRIP
This is due to the expansion of water inside the heater and is normal for
heaters of this type. It does not indicate that the valve is faulty and
overtightening of the valve can result in damage.
Your EOS7 water heater should give you trouble free operation, however, should a
problem occur the table below should enable most faults to be identied with ease.
Fault nding should only be carried out by a competent person and any replacement
part should be authorised Elson spare parts.
SYMPTOM PROBABLE CAUSE ACTION
No hot water 1. Check power Check and replace as
necessary.
2. Faulty cut out
3. Faulty thermostat
4. Faulty element
Water too hot / cold 1. Thermostat set to wrong temperature Adjust thermostat.
2. Faulty thermostat Switch off, check and
replace.
No water ow 1. Frozen Switch off electrical power
and allow to thaw at room
temperature.
Do not switch on again until
full water ow restored and
full checks made for leaks
and electrical safety.
2. No mains supply Check mains.
Continuous water ow Faulty valve/tap Check and replace.