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Why wont my rads come on ?

I have plenty of hot water so boiler is working fine,thermostat is receiving signal but rads not coming on ? I replaced the 3 port valve but no change ?

Deano
September 2011
Heating, Home Heating SystemsPlenty Hot Boiler
3 port valve is mid position follow Y plan, wiring diagram

lal
September 2011

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Mend Heating, Home Heating Systems

Worcester boiler dripping water?

Worcester boiler dripping water, can I just tight the screw? The icon next to the valve looks like radiators... [Read more]
Mend Heating, Home Heating Systems

Vaillant ecotec 831 plus?

Following a F22 fault where we had no heating and only cold water from the hot water tap, I topped up the syst... [Read more]
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Siemens RDJ10RF thermostat problem?

My temp is showing on the reciever alot higher than it actually is & each time I turn the temp up to get the h... [Read more]
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Boiler cycle?

My boiler only fires up for about 90 seconds greenstar 4000
Mend Home Heating Systems
Mend Heating, Home Heating Systems
Free repair help for home heating systems