Malfunctions and Errors
Malfunctions and Errors
Code
Description
Solution
37
Water pressure is too low.
Refill water (1.6 bar). Check the water pressure
on the display and match it with the pressure
gauge. If the difference is larger than 0.6 bar, re-
place the water pressure sensor.
Remove the water pressure sensor and make
sure the opening for the sensor is clear of ob-
structions. Clean as needed and install a filter in
the heating circuit beneath the boiler.
41
Water pressure signal time out. The water
pressure value is not being refreshed often
enough.
Check the water pressure sensor connection and
replace the universal sensor as needed.
43
Central heating- return flow sensor is not
within normal parameters (short circuit). If
the NTC-sensor is not within normal para-
meters and remains in this state for longer
than 10 sec., a warning will be displayed. If
the sensor returns to normal parameters,
the warning disappears. The warning
causes the system to shut down. Heating
demands are deactivated.
Check the return flow sensor and replace as
needed.
44
Central heating- return flow sensor is not
within normal parameters (line error). If the
NTC-sensor is not within normal paramet-
ers and remains in this state for longer than
10 sec., a warning will be displayed. If the
sensor returns to normal parameters, the
warning disappears. The warning causes
the system to shut down. Heating demands
are deactivated.
Check the return flow sensor and replace as
needed.
47
Combination error. Either the water pres-
sure sensor or the supply sensor is defect-
ive or the cable has been interrupted.
Check the universal sensor (water pressure and
supply sensors against the automatic firing
device.
All errors are recorded in the error log and organised in relation to the number of op-
eration modes. The error codes 10-22 are not visible (they are part of the safety
core).
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Gebr. Bruns GmbH is not responsible for typographical errors or technical inaccuracies and reserves the right to make adjustments.
Gebr. Bruns GmbH
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Hauptstraße 200
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26683 Saterland
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Tel.: + 49 (0) 44 92 / 92 46-0
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Fax: + 49 (0) 44 92 / 71 41
www.bruns-heiztechnik.de
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