Alarm
6 720 643 415 (2010/03)
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11.7.6 Low temperature collector circuit out E2x.T11
Function: Alarm is given if the collector circuit
temperature is too low and if warning of this has been
given several times.
Alarm timer starts: Yes.
Reset condition: The temperature of the refrigerant
exceeds the lowest permitted temperature.
Category: A.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
B Contact the dealer if the alarm remains after
acknowledgement.
11.7.7 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.
B Check the heating system fuses, and main fuses.
B Contact the dealer if the alarm remains after
acknowledgement.
11.7.8 Motor cut-out 2 E2x.F12, Collector circuit
pump
Function: Compressor stops. Activated when the
collector circuit pump motor cut-out has tripped. The
heat transfer fluid (coll.) pump stops and the heat pump
also stops to protect the other components.
Alarm timer starts: Yes.
Reset condition: Motor cut-out reset.
Category: B.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
B Check heating system fuses.
B Contact the dealer if the alarm remains after
acknowledgement.
11.7.9 Phase error E2x.B1
Function: Compressor stops. Activated when one of the
phases in the voltage supply is missing or when there is
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.
B Check the heating system fuses, and main fuses.
B Contact the dealer if the alarm remains after
acknowledgement.
11.7.10 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.
B Contact the dealer if the alarm remains active for
more than three hours or recurs often.
11.7.11 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.
B Contact the dealer if the alarm remains active for
more than three hours or recurs often.
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