Rotex GW-30 H12 Instrucciones De Instalación página 96

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8.3.4
The power is reduced
Possible causes:
At a high level of rpm, the power has decreased
by more than 5%.
8.3.5
CH is not reaching correct temperature
Possible causes:
Water pressure in installation is too low
No È
Setting of room thermostat is not correct.
No È
Temperature is set too low.
No È
Pump does not run properly. Pump setting is
too low.
No È
No flow through the installation.
No È
The boiler power is not set for the installation.
No È
No heat transfer due to contamination in the
exchanger/installation.
8.3.6
No hot water (only applicable in indirectly fired tank)
Possible causes:
The service display shows a hyphen (
The unit is off.
No È
No electricity supply on the three-way valve.
No È
Three-way valve does not switch.
No È
No electricity supply on tank sensor/thermostat
(5V DC).
No È
Boiler controller does not come in on DHW:
boiler sensor/thermostat faulty.
No È
Boiler controller does not ignite.
8.3.7
DHW does not reach desired temperature (only applicable for indirectly fired tank)
Possible causes:
Tank temperature is set too low.
8.3.8
CH installation stays warm unwanted
Possible causes:
Room thermostat/weather dependent regulation
faulty or short circuited.
Solution:
Check the unit, siphon and output system for contamination.
Yes Æ
Clean unit, siphon and output system.
Solution:
Yes Æ Fill up the installation.
Yes Æ Check the setting and adjust if required: Set to 0.1 A.
Increase the CH temperature. See Operation CH. If there is an outdoor sensor:
Yes Æ
Check the outdoor sensor for short circuit: rectify this.
Yes Æ Increase the pump setting or replace the pump.
Check whether there is a flow through the installation: at least 2 or 3 radiators must
Yes Æ
be open.
Yes Æ Adjust the power. See Setting maximum CH power.
Yes Æ Rinse the exchanger/installation on the side of the CH.
Solution:
-
Switch on the unit with the
).
Yes Æ
Yes Æ Check the wiring in accordance with the diagram.
Yes Æ Replace three-way valve.
Yes Æ Check the wiring in accordance with the diagram.
Yes Æ Replace the tank sensor/thermostat.
Yes Æ See boiler controller does not ignite.
Solution:
Yes Æ Set tank temperature. See Setting and adjustment
Solution/cause:
Check the wiring.
Check OpenTherm and On/off connection of the unit.
Yes Æ
Replace the thermostat.
Replace the weather-dependent regulation.
button.
46

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