I have a powermax 155 and a british gas wireless thermostat RC 1 - WC1 unit. For some reason they are no longer working together. What setting does the boiler need to be on to marry up to the wireless unit. They did work but not now. I cannot control the temp. I have followed the manuel for the boiler but dont know the setting to marry them up. There are posts for the 2 things on here but nothing so show the setting the boiler should be on. If anyone can help please do - if more info is needed just ask. Thanks