We have a Towerstat STTR/F thermostat (
http://www.sparksdirect.co.uk/blog/w.../06/RSRF-1.jpg ),
heating's been switched off for the summer, just switched the boiler back off
summer mode and re-paired the transmitter and receiver.

Now when the transmitter is sending through that the heating needs to come on
it is reaching the receiver, as otherwise the receiver just sits there with
the red light on and does nothing, but instead of firing up the boiler both
green and red lights are flicking on and off rapidly with a clicking sound and
you can hear the boiler trying to fire up but stopping again straight away (no
faults showing on the boiler).

Tried pairing the Tx and Rx on different channels but that doesn't seem to
make any difference, as I said above it does seem like they're actually paired
alright because when the Tx requests heating to go on that's when things start
"happening".

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