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Andrew Smith
Andrew Smith, Home Appliance Technician
Category: Appliance
Satisfied Customers: 3662
Experience:  Gas cooker specialist
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We have an RDH10rf thermostat with a RCR10/433 receiver. The

Customer Question

Hello. We have an RDH10rf thermostat with a RCR10/433 receiver. The green LED is always on which we know means the signal is good. However, the orange relay LED is always on too. Shouldn't this LED go off when the boiler is inactive? Or is it normal that it remains on all the time regardless?
Thanks
Submitted: 26 days ago.
Category: Appliance
Customer: replied 26 days ago.
The thermostat and receiver are Siemens models
Expert:  Andrew Smith replied 26 days ago.
Hi, these are the normal states of the LEDs