8
The Enerflow heat pump is equipped with the intelligent function to use the electrical
element located in the geyser as a backup system. This is to ensure that the user will
have hot water even in the adverse event where the heat pump has entered into self-
protection caused by an external event (such as too low or too high electrical supply
voltage). During such an event the Enerflow heat pump will display the corresponding
Error Code (see Trouble Shooting section of this guide) and an audible “Beep” will be
heard to ensure the user takes note of the fault. The backup element will automatically
be actived during such an event.
In the unlikely event where the heat pump is struck by lightning for instance, the
intelligent controller may not function properly anymore. In such an event, the
Enerflow heat pump is also equipped with an electrical cross-over switch (located
on the side panel of the heat pump) which can be used to bypass the heat pump
completely. By turning the switch from the default Auto position to the ON position
redirects the electrical power away from the intelligent controller directly to the
electric element (Auto = Heat pump operation, On = Backup element only). Once the
power is switched over to the electric element, it will be controlled by the element
thermostat to heat the water inside the geyser to the thermostat set-temperature.
ELEMENT BACK-UP
3
Electric
Element
only
Heat
Pump
Mode
!
WARNING
Always ensure that an appropriate and approved geyser thermostat is
installed. When the cross-over switch is engaged, electrical power to the control of
the heat pump is removed. The heat pump will not be able to protect itself during
extremely cold weather conditions (<3°C) and it is therefore recommended that an
authorised installer is contacted as soon as possible to determine the fault and switch
the heat pump back to Auto after the fault has been rectified.
!
WARNING
Take note that if the thermostat temperature may be set higher than the
heat pump set temperature. The resulting water then be hotter and could cause scalding.
NOTE:
The cross-over switch can be used to remove the “Beeping” sound without
disengaging the element. Please write down the self-protection error code before
switching the cross-over switch so that the installer may be informed of what
caused the error.
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