Evening all,
Im having a spot of bother getting 6 trv's to behave on my rsf82et combi system.
My tenants have had the trv's on full for ages and ive just learnt that theyve been taking the heads off, pushing the pins down then replacing, back on maximum. apparantly, the rads have only been working if the trvs are on full.
Boiler runs fine, then cycles (one minute on/one minute off) as though its reached temperature...but it hasnt...oh, by the way, theres no room stat, just basic stat on boiler panel. I dont think its flame rectification as it does fire up for a while from cold, i dont think its the thermistor as the boiler doesnt kettle and then shut down...it appears to run fine...just cycling too much.
I took heads off trvs myself and freed the pins off with a bit of silicone grease but this seems to have made it worse! Rads/water are in fairly good condition and its all 15mm pipework.
I dont think its a balancing problem as the system has worked fine for years.
Would all 6 trvs play up at the same time? hmmmm...although they dont exactly feel to be moving smoothly (almost as if they want to turn closed?)
My fear is that its the boiler stat caused by excessive use (by process of elimination), which would probably mean a new pcb...
Or could it be the thermistor going mad, thinking its too hot and knocking the boiler off?
or am i missing anything???
Im having a spot of bother getting 6 trv's to behave on my rsf82et combi system.
My tenants have had the trv's on full for ages and ive just learnt that theyve been taking the heads off, pushing the pins down then replacing, back on maximum. apparantly, the rads have only been working if the trvs are on full.
Boiler runs fine, then cycles (one minute on/one minute off) as though its reached temperature...but it hasnt...oh, by the way, theres no room stat, just basic stat on boiler panel. I dont think its flame rectification as it does fire up for a while from cold, i dont think its the thermistor as the boiler doesnt kettle and then shut down...it appears to run fine...just cycling too much.
I took heads off trvs myself and freed the pins off with a bit of silicone grease but this seems to have made it worse! Rads/water are in fairly good condition and its all 15mm pipework.
I dont think its a balancing problem as the system has worked fine for years.
Would all 6 trvs play up at the same time? hmmmm...although they dont exactly feel to be moving smoothly (almost as if they want to turn closed?)
My fear is that its the boiler stat caused by excessive use (by process of elimination), which would probably mean a new pcb...
Or could it be the thermistor going mad, thinking its too hot and knocking the boiler off?
or am i missing anything???