Alarms
6 720 645 504 (2011/04) en
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17.9.14 High flow temperature E1x.T1
Function: The compressor stops because the flow
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.
17.9.15 Faulty external additional heat E71.E1.E1.F21
Function: External additional heat refers to additional
heat which is controlled as mixed additional heat or via
0-10V signal. If the alarm signal from the additional heat
has been connected to 10 - C on the PEL board, the
alarm can be given when an error occurs. The type of
error depends on the connected unit.
Reset condition: The error in the external additional
heat has been overcome and no alarm signal.
Category: F.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
17.9.16 Overheat protection tripped hot water
electric heater
Function: The electric heater is turned off. If alarm
output from the electric heater has been connected to
the control unit, the alarm is given when an error occurs.
Reset condition: The error in the electric heater has
been overcome and no alarm signal.
Category: F.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
17.9.17 Failure on sensor E31.T32 anti-freeze cooling
Function: Activated when the sensor's value indicates a
temperature lower than -10 °C. The sensor is used in the
collector circuit for cooling in order to prevent the heat
exchanger from freezing. The mixing valve in the
collector circuit is closed.
Reset condition: The value of the sensor indicates >-
10 °C.
Category: G.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has
disappeared.
17.9.18 Short circuit on sensor E31.T32 anti-freeze
cooling
Function: Activated when the sensor's value indicates a
temperature higher than 30 °C. The sensor is used in the
collector circuit for cooling in order to prevent the heat
exchanger from freezing. The mixing valve in the
collector circuit is closed.
Reset condition: The value of the sensor indicates <
30 °C.
Category: G.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has
disappeared.
17.9.19 Error dew point sensor E1x.TM
Function: Activated when voltage 0-10V for temperature
falls below 0.5V or exceeds 8V. Also activated when
voltage 0-10V for humidity falls below 0.5V or exceeds
9.8V. Cooling on current mixing valve is aborted. The
alarm may appear after a power failure but the alarm
cause normally disappears automatically and the only
thing that has to be done is to acknowledge the alarm.
Reset condition: The sensor's value for temperature is
1V-7V and the sensor's value for humidity is 1-9.7V.
Category: G.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has
disappeared.
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