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Troubleshooting
No call for heat is made
If no call for heat is made and the cylinder is instead energizing the
primary immersion, ensure that the cylinder has been set to operate
with a default heat source set as ‘heat pump’. If the cylinder is offline
then this change may require a reboot to take effect. If a call for
heat is being made by the cylinder but there is no response from the
circulator pump, ensure that a 240VAC supply has been provided to
the assembly junction box. If a call for heat is made and the circulator
powers but the heat pump does not respond, double check the wiring
integration with the heat pump along with the heat pump controller
setup - refer to the heat pump’s installation manual for further
guidance.
Heat pump reporting strange temperatures
If the heat pump DHW sensor reading is either in an error state or
reporting values outside of the expected range, then the heat pump
may be set to the wrong sensor type. If the heat pump accepts
multiple different types of temperature sensor, try checking the heat
pump manual for guidance on changing the sensor type. If no such
function exists, please contact Mixergy directly for further support.
Slow charging
If the cylinder is charging slowly when charging via heat pump, ensure
that the heat exchanger circulator pump is running and that there is
adequate flow-rate through the primary side of the exchanger.
Electrical fault
If an electrical fault of the controller is suspected or the electrical
system does not operate as expected, please contact Mixergy directly.
Intermittent charging
If the cylinder is only able to charge some of the time when a call for
heat is made or charging is out of sync with calls for heat, this indicates
either a scheduling conflict or a wiring integration issue. If the former
is suspected, please ensure that the heat pump controller’s DHW
generation is unscheduled. If the latter is suspected, double check the
wiring. If a solution cannot be found, please contact Mixergy directly.
