How to know if your central heating pump is not working?

1 The water flow pipe isn’t hot despite the pump running 2 A water leak coming from the pump 3 The pump is making unusual noises 4 The pump casing feels hot 5 Some or all of your radiators aren’t heating up 6 You have no hot water

Why does my circulator pump not turn on?

The problem could be a bad circulator motor or circulator relay, but more likely the problem is that someone in the house is running hot water and the hot water is made by a tankless coil in the boiler and the boiler temperature drops.

Can a circulator pump turn on an indirect water heater?

If you have an indirect water heater installed and a single circulator pump serving all of your heating (and water heater tank) zones, then a call for heat at any thermostat OR a drop in temperature in the indirect water heater will turn on the circulator.

How does a circulating pump work in a heating system?

A circulating pump is a water pump that moves hot water around your heating system. The water travels from your boiler through to the pipes that feed your radiators, towel rails, and hot water cylinder. The water then flows back to the boiler to maintain a constant flow of heated water around your home.

Why does my circulator run but my boiler is not hot?

If the circulator pump runs and the boiler is hot but the radiators or baseboards do not get hot the system may be air-bound: Photo: when the zone served by this circulator was ice cold we confirmed that the circultor relay had pulled-in, that electrical power was delivered to the circulator motor, and that the zone was (probably) not air-bound.