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Trouble Shooting
HEATER WILL NOT SWITCH TO HEATER 'ON' MODE
In most cases this will be the result of one of the following not being met.
Possible Cause 1: The set point temperature has been achieved. To confi rm
that the digital controller is requesting the unit to heat check that the
window next to the word HEAT is illuminated. If illuminated go to step 2, if
not illuminated increase the required temperature to a value higher than
the current water temperature. Confi rm whether the heater now switches to
HEATER ON mode.
Possible Cause 2: The 'Thermal safety cut-out' has tripped.
Remedy: remove button cover and press red button to re-set (See
diagram below). If a positive click is felt, the cause of the tripping must
be investigated and could be caused by a debris build up or air pocket
trapped inside the fl ow tube of the heater.
Fig 7.
9
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