Hello,
I have a Honeywell HCW80 room thermostat and HC60NG relay unit connected to a oil combi boiler. All has been working fine until recently. The heating will not start at the required time unless I press the button on the relay unit (occasionally needs to be pressed twice). The boiler then fires up and everything warms up nicely.
So far I have......
Replaced batteries in the wireless thermostat
Radio transmission check = 5 flashes (strong signal).
Factory reset of relay unit then teach in again.
Nothing has worked, any ideas?
I have a Honeywell HCW80 room thermostat and HC60NG relay unit connected to a oil combi boiler. All has been working fine until recently. The heating will not start at the required time unless I press the button on the relay unit (occasionally needs to be pressed twice). The boiler then fires up and everything warms up nicely.
So far I have......
Replaced batteries in the wireless thermostat
Radio transmission check = 5 flashes (strong signal).
Factory reset of relay unit then teach in again.
Nothing has worked, any ideas?