Technical data

49
CTC EcoZenith i250
General Information
Alarm text Description
4-way valve alarm This alarm is displayed if a fault occurs with EcoAir's 4-way valve or if the
pipes to 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
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.
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.
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. Call in a specialist to
check the cause.
Compressor type? This message appears if there is no information about the compressor type.
Heat pump alarm This message appears if the heat pump is in alarm mode.