wireless/ radio heating controls

[fletchflash]

evening all

got a job on at the moment, a flat, where theres a problem with a wireless/ radio control unit which controls 5x heaters, immersion heater and a towel warmer. the 5x heaters are spured off various ring circuit but activated by a radio signal from timer control unit, bit like this

http://www.hygienesuppliesdirect.com/products/prod151942

heaters

http://www.hygienesuppliesdirect.com/products/prod151930?tkt=fr&utm_source=google&utm_medium=products&utm_campaign=productfeed

anyone got any experiance with this kind of thing?

the original problem was the hot water wasnt hot enough, the control unti was activating the wireless reciever/relay in CU, but only staying on for 10 mins or so. Tried loads of different settings and zones but always same prob. couldnt work out whether was reciever or control unit.

i ended up taking the immersion off the system and putting a hard wired timer in. alls fine with that now

anyway few weeks later the heaters are now having same prob! these control units are a nightmare! expensive too, coz its for an estate agent reluctant to spend 300 quid on new control unit.

Anyone seen these before? would it be possible to bypass the reciever in each heater and just switch at wall? had a look in one but couldnt see anything simple, thought id do bit more research before butchering anything.

cheers for help!

 

[Doc Hudson]

Do you know what sort of transmission methods they use for the control signals? are they actual radio transmitter & receivers, or do they use encoded signals transmitted down the physical mains cables? Either method you would need somehow to eliminate any noise or interference that could be affecting the signals.

Doc H.

 

[fletchflash]

there wireless radio transmitters and recievers. would interfernce affect all five heaters at once though. One of the heaters had seemed to be okay, so i put the rest onto that zone- they all stayed on for slighlty longer than normal.

if you turn the mains switch on at each heater they seem to get hot, stay on for 3-4 mins then cut out. when all on the zone with the working heater they stayed on for 10 or so mins. whole thing seems over complicated. i have visited a flat in same block with problems with the same system, but cant remember what the problem/solution was!

thanks for reply doc

 

[batty]

How long have they been in maybe they need new batteries.

 

[fletchflash]

been in a few years now but pretty sure they dont use batt's. there all spurred off different ring circuits, including control unit

 

[Doc Hudson]

Without either some technical monitoring equipment, or a large selection of other transmitter and receiver modules, I think it is going to be very hard to prove exactly which elements are failing, or if external interference is overriding the system preventing it from working correctly. It a tricky one and I can offer no other practical suggestions. But please keep us informed if you work something out.

Doc H.

 

[fletchflash]

yeah thats what i kind of thought. would think its something to do with control unit as both heaters and immersion were playing up. Not really confident enough to spend