40 - English
English
Malfunctions and the display codes of the boiler
Energy consumption is too high (higher then old boiler) /
the boiler burns too often or too long.
1. Is the room heated while it is not in use?
Insert more switching points with a lower temperature to the
clock thermostat.
2. Is the capacity of the new boiler higher then the capacity of
the old boiler?
3. Have you replaced an old geyser by a combi boiler? A combi
boiler can produce more hot water (more comfort) but also
uses more energy.
4. Is the ECO setting too high, as a result of which the room
temperature is too high during the night?
5. (Only WD and WD + RTC) Are the values for the starting
point and end point set in the CV menu not set too high?
The display shows an incorrect temperature
1. Is the IRT 30 thermostat able to determine the correct
temperature? Is the thermostat installed on a cold or warm
wall? Is it installed in direct sunlight or in draught? Is the IRT
30 thermostat installed near an open window or near heat
sources (tv, refrigerator or lamps)?
2. If you are convinced that the indication of the temperature is
incorrect (most of the times it is correct!), the temperature
measurement can be calibrated (refer to chapter 8).
Outside temperature indication is incorrect (only for WD
and WD + RTC) /display shows --- on the position of the
temperature indication
1. Is the outside temperature sensor able to determine the
correct outside temperature? Installed on a warm or cold
spot on the outside wall, (influenced by sun, wind, snow, ice or
rain)?
2. Has the correct wiring (preferably 0.75 mm
2
) been used. Does
the wiring run along a 230 V power supply cable?
3. Is the wiring connected to terminal 7 and 8 of the terminal
block in the boiler?
4. If necessary, the outside temperature sensor can be calibrated
(refer to chapter 8).
