When my 'Maxi' boiler is running the central heating, it overflows
hot water into the expansion tank in the loft. (NOT causing it to
overflow)
When the thermostat turns the boiler off - the back boiler makes
a rumbling/gurgling noise.
Do I have a serious problem?
2006-11-19 04:12:11 · 5 answers · asked by Good Looking 2 in Home & Garden ➔ Maintenance & Repairs
Not a serious problem . I think that you pump setting is too high and pumping water into the expansion tank . The rumbling noise when you switch the boiler off, is the boiler refilling with water. Turn your pump down to the lowest setting and see if that cures the problem.
2006-11-19 04:20:25 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The first answer is your best bet so far!! The system is possibly 'pumping over', reducing the pump speed may help. The gurgling could also be the boiler 'kettling', as the static water boils with latent heat when the pump and boiler shut off, this could also be a wiring fault, in that the pump overrun wiring, if required may not have been completed, OR the overrun thermostat (IF fitted ) may be faulty.
2006-11-19 12:43:48 · answer #2 · answered by jayktee96 7 · 0⤊ 0⤋
Sounds like your overflow tank needs draining. This is normal every few years. Isolate the tank and drain the tank completely. Then open it up again. Also, you could have a leaking pressure reducing valve on the boiler, (PRV) but not as likely.
2006-11-19 13:28:01 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The thermostat in the tank needs to be adjusted/replaced. It is allowing the water to be heated to too high a temp. before shutting off the heat source. the overflow is a safety for this and other conditions like it.
2006-11-19 12:21:51 · answer #4 · answered by electrdave 1 · 0⤊ 0⤋
I think its a Baxi isnt it ??? As for the problem - maybe air is being dragged into the system or you've got a build up of sludge. You need to call out a corgi engineer for a diagnostic xx
2006-11-19 12:20:58 · answer #5 · answered by starlet108 7 · 0⤊ 0⤋