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Hello I wonder if anyone can help. I have a Myson Apollo 30/50B with a Honeywell Y plan? , it was in the house when I moved in, in 2003. I assume it was fitted in the 80's. As a diy-er since moving in I have changed TRVs/lockshields and four rads (approx 10 years ago) added wall stat and changed the clock however recently I had to change the pump, wall stat, tank stat and as I had one spare the motor on the 3 port valve and programmable clock all like for like.
The water flow has always been noisy since moving in as in water whooshing when first switched on and the sound of water going through the pipes like a stream and I can also hear what sounds like water dripping into water in the airing cupboard. My boiler is in the garage and last week I could hear a odd noise when the heating came on so checked the system (bled rads etc) and I noticed it was constantly short cycling even when first switched on, the rads heat up and the water heats up no problem however it will fire up for say 7 seconds then shut off for 15 seconds and will do this as long as its on. I havent noticed it before but I havent looked for it so it could have been doing this for a long time? it does when cold on occasion fire up and stay on for a while then switch off and cycle as normal, only when its fully at temp will it constantly short cycle.
Since changing the stats and pump its a lot hotter than its ever been. I have sort of balanced the rads using touch as a guide as no thermometer, they all seem to be working fine.
Also when I first isolated the system many years ago so I could change the rads etc I shut off all taps including two that are near the tank, its only this week I have found they may be balancing gateway valves (I genuinely didnt know thats what they could be so shut them off) Since then they have always been fully open but since I have found out what they could be and because the boiler is short cycling I have opened both one full turn and adjusted each slightly (open) to see if it stops the short cycling, it doesnt. If you look at the photos the valve on the right (not the one on the return from the tank) when I turn that down the sound of the water gushing improves.
So any ideas why its short cycling, why a whooshing noise (sounds like a low jet noise lasts about 3 seconds but continuous), why does the water constantly sound like a stream (and dripping noise) and are they two gateway valves and are they used for balancing, should both be fully open or one be closed and one open. Oh the 3 port valve seems to be working as it should but the manual lever seems loose and sometimes doesn't stay on manual. It does however divert when needed.
I have included a video, you may have to turn your volume up to hear the water.
I am intending getting it replaced this year due to government restrictions on gas boilers. I don't fancy a heat pump.
Thanks in advance
The water flow has always been noisy since moving in as in water whooshing when first switched on and the sound of water going through the pipes like a stream and I can also hear what sounds like water dripping into water in the airing cupboard. My boiler is in the garage and last week I could hear a odd noise when the heating came on so checked the system (bled rads etc) and I noticed it was constantly short cycling even when first switched on, the rads heat up and the water heats up no problem however it will fire up for say 7 seconds then shut off for 15 seconds and will do this as long as its on. I havent noticed it before but I havent looked for it so it could have been doing this for a long time? it does when cold on occasion fire up and stay on for a while then switch off and cycle as normal, only when its fully at temp will it constantly short cycle.
Since changing the stats and pump its a lot hotter than its ever been. I have sort of balanced the rads using touch as a guide as no thermometer, they all seem to be working fine.
Also when I first isolated the system many years ago so I could change the rads etc I shut off all taps including two that are near the tank, its only this week I have found they may be balancing gateway valves (I genuinely didnt know thats what they could be so shut them off) Since then they have always been fully open but since I have found out what they could be and because the boiler is short cycling I have opened both one full turn and adjusted each slightly (open) to see if it stops the short cycling, it doesnt. If you look at the photos the valve on the right (not the one on the return from the tank) when I turn that down the sound of the water gushing improves.
So any ideas why its short cycling, why a whooshing noise (sounds like a low jet noise lasts about 3 seconds but continuous), why does the water constantly sound like a stream (and dripping noise) and are they two gateway valves and are they used for balancing, should both be fully open or one be closed and one open. Oh the 3 port valve seems to be working as it should but the manual lever seems loose and sometimes doesn't stay on manual. It does however divert when needed.
I have included a video, you may have to turn your volume up to hear the water.
I am intending getting it replaced this year due to government restrictions on gas boilers. I don't fancy a heat pump.
Thanks in advance
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