Hello
Background
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My boiler mechanical timer switch was broken so I replaced it with a new digital model.
I have replaced the original "Landis & Staefa RWB2E" with a "Siemens RB29" - The backplate was a like for like replacement - I did not do any rewiring it just 'fit'. (i used the original RWB2E plate)
The boiler is a "Glow Worm 45-60B"
Issue
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Both the CH & HW neons light as expected
When the HW is switched on, the boiler "kicks" into life and I can visual see huge flames in the pilot light window (sorry for the non-technical terminology)
When the CH is switched on, the boiler "pump" comes on but I do not see a mass of flames or hear the same noise as I do when the HW is switched on.
I can feel the water pumping through the radiators - but they are not getting hot.
If i turn both HW & CH on then the radiators warm up - I am assuming this is because the pump is on and the HW switch is allowing gas into the boiler.
Can anybody comment as to what i may be doing wrong.
*** Note that when i fitted the new unit I only turned the boiler built in thermostat to "off" and turned the electricity off.
The room thermostat if adjusted seems to switch the boiler pump on/off
Background
--------------
My boiler mechanical timer switch was broken so I replaced it with a new digital model.
I have replaced the original "Landis & Staefa RWB2E" with a "Siemens RB29" - The backplate was a like for like replacement - I did not do any rewiring it just 'fit'. (i used the original RWB2E plate)
The boiler is a "Glow Worm 45-60B"
Issue
------
Both the CH & HW neons light as expected
When the HW is switched on, the boiler "kicks" into life and I can visual see huge flames in the pilot light window (sorry for the non-technical terminology)
When the CH is switched on, the boiler "pump" comes on but I do not see a mass of flames or hear the same noise as I do when the HW is switched on.
I can feel the water pumping through the radiators - but they are not getting hot.
If i turn both HW & CH on then the radiators warm up - I am assuming this is because the pump is on and the HW switch is allowing gas into the boiler.
Can anybody comment as to what i may be doing wrong.
*** Note that when i fitted the new unit I only turned the boiler built in thermostat to "off" and turned the electricity off.
The room thermostat if adjusted seems to switch the boiler pump on/off