I have a problem with my central heating control box. The box is
located next to the hot water tank on the floor.Inside is a circuit
board with a relay fixed to it which is oscillating when the water
heats up.The wires also goto to the valve and pump.The control comes
from a Danfoss TP5 unit which is located down stairs.The only
identification is a circuit board number PMT-DP.I cannot identify it to
get a replacement board.Anybody with any ideas where I might locate it
or how I could replace it with an alternative.(I am told this is an
unusual configration)

In message , 
stevev  writes

>I have a problem with my central heating control box. The box is
>located next to the hot water tank on the floor.Inside is a circuit
>board with a relay fixed to it which is oscillating when the water
>heats up.The wires also goto to the valve and pump.The control comes
>from a Danfoss TP5 unit which is located down stairs.The only
>identification is a circuit board number PMT-DP.I cannot identify it to
>get a replacement board.Anybody with any ideas where I might locate it
>or how I could replace it with an alternative.(I am told this is an
>unusual configration)
>

I think if you put a photo up somewhere (not as an attachment here), it 
might help

-- 
geoff