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LCD display :
The meaning of the used symbols
:
- temperature, failure modes and service data in digital numbers
- heating mode (heating temperature displayed)
- boiler burning
- temperature symbol
- K factor value displayed (weather compensated mode)
- summer mode selected
- winter mode selected
- boiler ignition failure
- symbols for indication of communication with the connected interface(IU02Q,IU04.10, IU05Q)
The set temperature indication:
When you turn a knob for heating or DHW heating control the relevant mode symbol starts flashing
and the display shows the temperature which is being set, i.e. the display shows the changes of the
temperature. When you stop adjusting the set temperature is shown for another 5 seconds. After that the
display shows the real temperature of the current mode again.
Failure or operational values exceeding indication:
The LCD display shows „E“ and failure code (for codes see the following chart)
failure code
meaning
E01
ignition failure
E02
insufficient heating water through-flow (between repeated attempts)
E03
-
E04
heating water sensor damaged
E05
DHW sensor damaged (only for boilers with DHW through-flow heating)
E06
exceeding the heating water temperature limit – safety thermostat,
or transition
resistance in the circuit of the through-flow fuse, safety thermostats (safety,
flue) or manostat microswitch, or omission of screened hv cables
E07
outside temperature sensor damaged (for weather compensated regulation)
E08
failure in the flue exhaust (reaction of the flue thermostat), or the reaction or
failure of manostat (in turbo boilers)
or transition resistance in the circuit of
the through-flow fuse, safety thermostats (safety, flue) or manostat microswitch
E12
insufficient heating water through-flow (after repeated attempts)
E13
microswitch test
