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www.elecro.co.uk
Possible cause 3:
Insuffi
cient fl ow.
If using a cartridge fi lter:
Confi rm this by running the system with the
cartridge removed from your pump & fi lter unit, this will supply the heater
with the maximum fl ow rate your unit is capable of. If the heater then
switches ’On’ (ie: red light ’On’) a blocked cartridge can be confi rmed to be
the cause. The cartridge should be cleaned or replaced.
If using a sand fi lter:
Check the pressure indicator on your sand fi lter and
back wash if necessary.
NOTE: In some cases the thermal safety cut-out tripping and a low
fl ow rate can be linked ie: when a fi lter becomes choked air can be
drawn into the fi ltration system and become trapped inside the
heater so causing the thermostat to trip.
NO LIGHT APPEARS ON THE HEATER WHEN IT IS SWITCHED ’ON’
Possible cause:
Power failure external to the heater
Remedy :
Check any fuses, RCD or other switch components installed in
the supply cable.
Note:
the heater is not fi tted with a fuse.
THE FLOW TUBE DOES NOT FEEL WARM
Due to the high effi
ciency of your electric heater no warmth should be
detectable from the fl ow tube of the heater.
The most likely causes of the fl ow tube feeling warm are:-
Possible cause 1:
The heater has been positioned in direct sunlight.
Possible cause 2:
An air pocket is trapped inside the heater particularly if
the tank feels warmer at the highest point of the tank (as air rises)
THE WATER ENTERING MY POOL DOES NOT FEEL MUCH WARMER
The temperature gain of the water after it has passed through the heater
will be directly proportional to the volume of water being pumped in
relationship to the power output of the heater.
For example:
A 6-kW heater, when connected to a 4,000 litre / hour
pump, will produce a lift in temperature of approximately 1.2
°
C (almost
undetectable to the human hand) however, as the water being heated is
re-circulated from a single body of water, the time required to heat it
remains unaff ected by the volume of fl ow. A popular misconception is that
slowing down the fl ow rate will speed up the heating process.
EN
G
L
ISH
