siemens rdj10rf?

i have reset both my trasnmitter and receiver following instruction on here. On the receiver is ha a green light which i think means it's communicating. Where the relay switch is on the reciever it has an amber light? I presume this is ok, but the heating just wudnt come on at all

I have changed the batteries in the trasnmitter and when i reset everything it must have been communicating because when i pressed the test and learn button the receiver flashed.

not sure whether i need to replace this, i know this is the problem because i have over ridden the rely switch on the receiver and the heating is working, but i just want it to work properly