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