Technical data

83
CTC EcoZenith i550 Pro
For the property owner
Alarm Text Description
Low brine temp Incoming brine temperatures from borehole/ground loop are too low. Press reset
and check whether the alarm recurs. If the fault recurs, contact your installer to
check the dimensions of the cold side.
Low brine flow Low brine flow is very often due to air in the collector system, particularly just after
installation. Collectors which are too long can also be a cause. Check also that the
brine pump is set to the correct speed. Press reset and check whether the alarm
recurs. Also check the brine filter that has been installed.
If the fault recurs, contact your installer.
Communication error
PCB, Communication
error HP, Communication
error motor protect
This message is displayed when the display card cannot communicate with the relay
card.
This message is displayed when the display card cannot communicate with the HP
control card.
This message is displayed when the HP control card cannot communicate with the
motor protection.
High compr.temp This message appears when the compressor temperature is high.
Press reset and check whether the alarm recurs. If the fault recurs, contact your
installer.
Low evaporation This message appears when the evaporation temperature is low.
Press reset and check whether the alarm recurs. If the fault recurs, contact your
installer.
High evaporation This message appears when the evaporation temperature is high.
Press reset and check whether the alarm recurs. If the fault recurs, contact your
installer.
Low suct gas exp. valve This message appears when the suction gas temperature is low.
Press reset and check whether the alarm recurs. If the fault recurs, contact your
installer.
Low evapor exp. valve This message appears when the expansion valve’s evaporation temperature is low.
Press reset and check whether the alarm recurs. If the fault recurs, contact your
installer.
High evapor exp. valve This message appears when the expansion valve’s evaporation temperature is high.
Press reset and check whether the alarm recurs. If the fault recurs, contact your
installer.
Low superheat exp. valve This message appears when the expansion valve’s superheat temperature is low.
Press reset and check whether the alarm recurs. If the fault recurs, contact your
installer.
EVO off This message appears when there is a fault with the expansion valve control.
Contact your installer.
Phase missing This message appears in the event of a phase failure. Check the product’s fuses. If
this does not help, the installation should be checked by an authorised person.
Compressor type? This message appears if there is no information about the compressor type.
Contact your installer.
Heat pump alarm This message appears if the heat pump is in alarm mode.
Contact your installer.
Max thermostat If the heat pump has been stored in an extremely cold place, the max thermostat
may have been triggered. You reset it by pressing in the button on the electrical
switchboard behind the front panel. Always check that the max thermostat has not
been triggered during installation.