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Malfunctions and the display codes of the boiler
9. Malfunctions and the display codes of the
boiler
In this chapter, some possible problems/malfunctions will be
described. Furthermore, the possible solutions will be given.You
can always contact your installer if the problems persist.
For some items, the solution depends on the set kind of
regulation.This will be reflected by the following abbreviations:
- RR = room temperature controlled regulation
- WD = weather dependent regulation
- WD + RTC = weather dependent regulation with room
temperature compensation
9.1 Malfunctions
During heat-up, an annoying ticking sound is heard in the
pipes.
At the beginning of the day, the water will be heated-up as quickly
as possible, to enable the radiators to warm up the rooms as
quickly as possible.The metal tubes will expand because of the
sudden temperature rise, which may result in a ticking sound.
1. Increase the PID setting to reduce the heat-up speed of the
installation
2. Set ‘slow temperature rise’ to ON.
3. If the capacity of the boiler is much higher then necessary, the
water will be heated-up too fast. By means of the partial load
potentiometer on the UBA, the maximum capacity for heating
up the water can be reduced, so that the water will be heated
up more slowly.
4. If the rooms have been equipped with too many or too large
radiators, the house can also be heated with water of a lower
temperature.The maximum temperature setting of the water
can be reduced on the UBA.
In the morning, heating up takes too long
1. Set the ‘advanced heat-up’ to on
(only for RR and WD + RTC).
2. Advance the switching point to give the installation more time
to heat up the house.
3. We advise not to let the difference between the day and night
temperature exceed 5 °C (for floor heating we advise a
maximum difference of 2 °C).
