so we have a combi system, old vaillant ecotec plus.
installing a single zone john guest wireless kit
current room stat wired as per normal
ugh will have a zone valve and will only work when normal heating is on
how is the new stat wired in, can you have it parallel with the current one in...
can't test the boiler in full rate as when selected it doesn't respond, doesn't respond to anything in the p menu
board fault i presume. going back tomorrow, anyone had this before?
heat loss calculator doesn't take into account how many rads are currently in the house though, if there are 20 rads and the calculator tells me i need 20kw, there will be a few stone cold rads right?
unhappy customer...
I've been told that with new boilers they modulate down and will keep shutting down as it will keep circulating the closest rads
He said fit a low loss header or even zone off upstairs
My mate who is a Vaillant engineer said stick with a 430 as its upto the job
Looking to swap out an old potterton on Promax 30 kW wall hung boiler at a mates house
he wants a vaillant, I suggested we get a like for like 30kw if all is working fine but noticed all pipe work to the boiler is 28mm
vaillant connections are 22mm, would i go up a size to the 438 to counter...
hey guys, just been to quote for a job to replace the wiring center/programmer along with fitting a new greenstar ri.
just researching the wiring as i only really fit combis
ive noticed i need to wire the pump direct to the boiler for the pump overun - got that bit
in the boiler we have a...
i have a feeling its due to the system not being flushed i got the tennant to message me when the problem re occurs and tell me the s numbers while its giving the problem
s.31 central heating thermostat knob turned off or no heat demand from by the ebus control unit - its set to max
s.97 water...
so vaillant have no idea, one even suggested the dreaded thermal fuse, i cut my losses on the pcb (good customer) and got the landlord to call vaillant for a fixed price repair
i was thinking it had something to do with the diverter sticking. hmm il have to give them a call once im back there tomorrow, i spoke to two different people today and they both sounded a bit miffed and said swap the pcb, so not holding much hope for anything further than that..
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