Alarms
6 720 643 409 (2010/03)
83
16.9.7 Motor cut-out 1 E2x.F11, Compressor
Function: Activated when the compressor's motor cut-
out has tripped because of high current or lost current
phase resulting in undue strain on the compressor.
Alarm timer starts: Yes.
Reset condition: Motor cut-out reset.
Category: B.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
16.9.8 Motor cut-out 2 E2x.F12, Collector circuit
pump
Function: Activated when the collector circuit pump
motor cut-out has tripped. The collector circuit pump
stops and the compressor also stops so as to prevent
the evaporator from freezing.
Reset condition: Motor cut-out reset.
Category: B.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
16.9.9 Phase error E2x.B1
Function: The compressor stops when the phase guard
trips because of the lack of a phase or the presence of a
phase sequence error. A voltage difference > 15 %
between the phases also results in an alarm.
Alarm timer starts: Yes.
Reset condition: The error has been remedied and the
phase guard is under voltage.
In the event of a voltage difference: The difference
between phases has been reduced to < 15 %.
Category: E.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
16.9.10 Failure on sensor E2x.T6 hot gas
Function: The compressor stops because the hot gas
cut-out cannot be guaranteed. Activated when the
sensor's value indicates a temperature lower than -
50 °C.
Alarm timer starts: Yes.
Reset condition: The value of the sensor indicates >
-50 °C.
Category: E.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has
disappeared.
16.9.11 Short circuit on sensor E2x.T6 hot gas
Function: The compressor stops because the hot gas
cut-out cannot be guaranteed. Activated when the
sensor's resistance value indicates a temperature higher
than 150 °C.
Alarm timer starts: Yes.
Reset condition: The value of the sensor indicates <
150 °C.
Category: E.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has
disappeared.
16.9.12 High flow temperature E1x.T1
Function: The compressor stops because the flow line
temperature is too high for the heating circuit. Activated
when the sensor shows a value which is 5K higher than
the highest set point value for the circuit. The factory
setting for the highest set point value is 60 °C for
radiator type of circuit and 35 °C for underfloor type of
circuit
After hot water production, the alarm is delayed with 4
min.
Alarm timer starts: Yes.
Reset condition: The sensor's value falls below the
temperature for beginning of the heating demand.
Category: E.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has
disappeared.
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