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Plumberpro
Plumberpro, Home Appliance Technician
Category: Appliance
Satisfied Customers: 634
Experience:  Heating and hot water heating appliances experienced
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We have an RET230LS thermostat controlling underfloor heating

Customer Question

We have an RET230LS thermostat controlling underfloor heating but the heating is not turning on
When you turn the thermostat and the red led comes on you can hear a pump working but no difference on floor temperature
Submitted: 1 year ago.
Category: Appliance
Expert:  Plumberpro replied 1 year ago.
Hi, is the boiler definitely firing up? And if so can you upload a photo of the underfloor manifold?
Customer: replied 1 year ago.
Yes boiler is definitely working because all radiators etc are working. This is just for underfloor heating in bathroom which is controlled by a separate dances RET230L controller. And that seems to be the issue. When just green led on nothing happening. when you increase temp dial and red light goes on you can hear pump engage but no temperature rise on floor
Customer: replied 1 year ago.
sorry i meant danfoss
Expert:  Plumberpro replied 1 year ago.
Hi , it is most likely the valve that is not opening to let the heated water through to that circuit . Do you know what c control valve is used?
Customer: replied 1 year ago.
ok will go and have a look
Expert:  Plumberpro replied 1 year ago.
Ok