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Possible cause 3:
Insufficient flow.
If using a cartridge filter:
Confirm this by running the system with the
cartridge removed from your pump & filter unit, this will supply the heater with
the maximum flow rate that your unit is capable of. If the heater then switches
’On’ (ie: red light ’On’) a blocked cartridge can be confirmed to be the cause. The
cartridge should be cleaned or replaced.
If using a sand filter:
Check the pressure indicator on your sand filter and back
wash if necessary.
NOTE: In some cases the thermal safety cut-out tripping and a low flow
rate can be linked ie: when a filter becomes choked air can be drawn into
the filtration 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 fitted with a 3 Amp glass fuse located on the
top control panel assembly (see Fig 1).
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.
Fig 7.
