GENERAL FUNCTION
The printed circuit board (PCB) controls the heating and filling functions
of the boiler by monitoring the thermistor and level sensors. The PCB
also controls the external light unit to indicate the current state of the
boiler. Red and yellow LED’S on the circuit board indicate whether
the PCB has energised the element or solenoid respectively.
Should an element fail and need to be replaced, it may be necessary
to replace the lid gasket to ensure a reliable steam-tight seal.
Note: the element has a permanent ‘Live’ feed, and the ‘Neutral’
is switched. A video showing how to replace an element can be
viewed under the ‘Technical Guides’ section on our website
PRINTED CIRCUIT BOARD REPLACEMENT (PCB).
In the unlikely event of a PCB failing and a replacement being required,
full instructions will be supplied. It is important to note however, that
the separate Triac PCB must be securely mounted against the copper
heat-sink to ensure reliable heat dissipation. Heat transfer compound
is also supplied with all replacement circuit boards.
WATER TEMPERATURE
The temperature potentiometer is pre-set at Calomax and will only
require adjustment in exceptional circumstances. Contact Calomax
for advice.
Water boils at different temperatures depending on barometric
pressure. The temperature should not be tuned higher than 98°C, or
over boiling may occur during low barometric pressure conditions.
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