Alarms
6 720 643 409 (2010/03)
84
16.9.13 Faulty electric heater E21.E2
Function: The electric heater is turned off. Activated by
triggered overheat protection on the electric add. heat,
high flow temperature or too high temperature in the
electric add. heat.
Reset condition: Overheat protection reset.
Category: F.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
16.9.14 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.
16.9.15 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.
16.9.16 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.
16.9.17 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.
16.9.18 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.
16.9.19 Faulty protective anode E41.F31
Function: The alarm is activated when the anode in the
hot water heater is broken or does not work.
Presupposes that Yes is indicated in Protective anode
installed.
Reset condition: The anode should be taken care of so
as to prevent corrosion in the hot water heater.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
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