Technical data

82
CTC EcoZenith i550 Pro
For the property owner
11.2 Alarm messages
If a fault occurs with a sensor, for instance, an alarm is triggered. A message
appears on the display informing about the fault.
You reset the alarm by pressing the “Reset alarm” button on the display.
If several alarms are triggered, they are displayed one after the other. An
outstanding fault cannot be reset without being rectified first. Some alarms are
reset automatically if the fault disappears.
Alarm Text Description
Wrong phase order
compressor
The compressor motor in the connected heat pump must rotate in the right
direction. The heat pump checks that the phases are connected correctly;
otherwise, an alarm is triggered. In this case, two of the phases to the heat pump
need to be changed. The power supply to the heat pump must be switched off
when rectifying this fault. This fault generally only occurs during installation.
Alarm sensor An alarm is displayed if a fault occurs with a sensor that is not connected or has
short-circuited and if the value is outside the sensor’s range of measurement. If this
sensor is significant to the system’s operation, the compressor of the heat pump
stops. In this case, the alarm is reset manually after the fault has been rectified. For
the sensors below, the alarm is reset automatically after correction:
B1 Primary flow sensor 1 B15 Outdoor sensor
B2 Primary flow sensor 2 B17 Sensor external boiler
B3 Primary flow sensor 3 B30 Sensor in to solar panels
B5 Sensor upper tank B31 Sensor out from solar panels
B6 Sensor lower tank B32 Sensor solar panel, charging
B7 Sensor radiator return B33 Sensor solar coil tank
B8 Sensor flue gas B41 Sensor extra buffer tank upper
B9 Sensor external boiler B42 Sensor extra buffer tank lower
B11 Room sensor 1 B43 Sensor external hot water tank
B12 Room sensor 2 B50 Sensor pool
B13 Room sensor 3
and for heat pumps 1-3:
Sensor brine out Sensor brine in
Sensor HPin Sensor HPout
Sensor discharge Sensor suction gas
Sensor high pressure Sensor low pressure
Motor protect
compressor
High/low current has been detected to the compressor. Press reset and check
whether the alarm recurs. If the fault recurs, contact your installer.
High pressure switch The refrigerant’s high pressure switch has been triggered. Press reset and check
whether the alarm recurs. If the fault recurs, contact your installer.
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.
Alarm: Wrong phase order compressor
Reset alarm