Technical data
55
CTC EcoZenith i250
General Information
Alarm text Description
High brine temp Incoming brine temperatures from borehole/ground circuits are too high. Press
reset and check whether the alarm recurs. If the fault recurs, contact your
installer to check the heat source.
Excessively high brine circuit temperatures over a long period can
damage the compressor.
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. Also
check that the brine pump is set to the fastest 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.
4-way valve alarm This alarm is displayed if a fault occurs with EcoAir's 4-way valve or if the
connection pipes to the EcoAir are incorrectly connected. Press reset and
check whether the alarm recurs. If the alarm recurs, check that the charge
pump is pumping water to the heat pump's lower connection. If the fault
recurs, 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 on installation that the max. thermostat has not tripped.
Communication error PCB,
Communication error HP,
Communication error motor
protection
Communication error expansion
card
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.
This message is displayed when the display card cannot communicate with
CTC Solar controls/Expansion card.
Fuses This message appears when fuse F1 has been triggered.
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.