Intergas Heating Ltd 42
Replace the faulty manager.
No
Pump not running.
Check the power supply.
Check connector X2.
Replace faulty pump.
No
Burner not firing on CH: sensor S1 or S2 faulty.
Replace sensor S1 or S2. See fault code.
No
Burner does not ignite. See burner does not ignite.
11.2.5 The power is reduced
Possible causes: Solution:
At high rpm the power has fallen by more than
5%.
Check appliance and flue system for fouling.
Clean the appliance and flue system.
11.2.6 CH does not reach temperature
Possible causes: Solution:
Room thermostat setting incorrect. Check the setting and if necessary adjust: Set to 0.1A.
No
Temperature is too low.
Increase the CH temperature. See Operating CH . Check outside sensor for short-
circuiting. Rectify.
No
Pump not running correctly. Pump setting is too
low.
Increase pump setting, or replace the pump.
No
No circulation in the installation. Check whether there is circulation: at least 2 or 3 radiators must be open.
No
The boiler power has not been correctly set for
the installation.
Adjust the power. See setting maximum CH power.
No
No heat transfer as a result of lime scale or
fouling in the heat exchanger.
De-scale or flush the heat exchanger on the CH side.
11.2.7 No hot water (only when an indirectly heated DHW storage cylinder is applied)
Possible causes: Solution:
No current at the diverter valve. Check the wiring according to the diagram.
No
Diverter valve does not switch. Replace diverter valve.
No
No current at the DHW storage cylinder
sensor/thermostat.
Check the wiring according to the diagram.
No
Burner does not ignite on DHW: DHW storage
cylinder sensor/thermostat defect.
Replace DHW storage cylinder sensor/thermostat.
No
Burner does not ignite. See burner does not ignite.
11.2.8 Hot water does not reach temperature (only when an indirectly heated DHW storage cylinder is applied)
Solution:
Temperature setting for DHW storage cylinder
too low.
Set the DHW storage cylinder temperature. See 10 Setting and adjustment.
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