relay

Having been told by Sunvic and Drayton that I couldn't wire a Drayton MA1 mid position valve to a Sunvic RJ 2801or 2802 relay junction box I set out to do just that! After some head scratching with the RJ wiring diagrams the result was amazingly simple and was fully tested in all the Htg and HW...

Hi folks, Have any of you got a decent wiring diagram for a Drayton Flowshare with RB1 relay box? I managed to find one online but it's a bit blurred. I have a diverter that's playing up. It'll motor to heating only and calling for hot water will motor to mid. It'll motor back to water only no...

Hi there.. I recently had a Daikin heat pump system installed for heating the house. (air to water, model EKHBRD016ACV1). However the built-in circulation pump deemed insufficient for the 3-story house, so the installer added another circulation pump to the system. The second pump is...

Hi Im just wondering if anyone has any sort of knowledge with these stat and receiver? It has been fine the last two winters since it has been installed along with the new boiler, went to turn heating on other day and nothing happens! There is no problems with the boiler its down to the...

hi ive a problem with my oil combi boiler,ive had three electrians out and two plumbers,who blame each others trade,i have a red light on the relay,no heating or hot water,both pumps work,replaced the relay,the relay base,the flow switch and the tank relay as advised,still have a red light on...

Anyone know of a quiet wired digital room stat? I recommended a Honeywell DT90 but customer researched and reckons it's reported to be noisy when switching.

hello, i have checked wiring on old static thermostat, is it a matter of just replacing with the BDR91 Relay Box Old stat setup Earth in earth Blue in 2 Yellow in 3 Red in 4 and 1 Ne Relay Box/Sender do i attached Blue in N Red in L and LYellow in A Earth in B any help much appreciated

Hi fellas, Im a spark so go easy on me! Got a call out to Electrical fault on a UF heating system today No voltage to the pump, when I traced the fault it seemed the 230 supply went from the control center to a PCB marked "rx 58 pump logic module". Various conductors leave the module but two...

Can somebody please help! When we turn the room thermostat on we are getting a loud buzzing sound coming from the junction box which stops when you turn the thermostat off. We have checked the relay/solonoid in the junction box and it appears to be slightly charred and we were wondering if it...