A Baxi Solo HE 15 in a rental in Great Barr had a no-flow fault. The pump was getting 240 V but its impeller wasn't turning, and the pump valves had failed too. We drained down, replaced the pump and both valves, refilled and bled the system, and had the heating and hot water working on the same visit.
Last week we attended a Baxi Solo HE 15 in a rented house in Great Barr with a no-flow fault. The pump, mounted beside the hot water cylinder, had failed: it was getting 240 V, but the impeller wasn't spinning. The pump valves had failed as well, so we had to drain the system down to change it. We fitted a new pump and new pump valves, refilled and bled the system, checked for leaks, and ran the new pump in its air-purge mode to clear the air. The heating and hot water were working again on the one visit, and the landlord and tenant were extremely happy.
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£99 in office hours (Mon–Fri, 8am–5.30pm) covers attendance, diagnosis and the first hour. Parts and any further work are quoted and agreed before we carry on. Out of hours, the price is quoted by phone before we set off.
No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked. Full price list
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Last week we attended a Baxi Solo HE 15 in a rented house in Great Barr. The boiler was showing a no-flow fault, and the tenant had no heating or hot water.
The heating pump is mounted beside the hot water cylinder, which you can see in the first photo. It was getting 240 V, but the impeller wasn't spinning: the pump had failed. The pump valves had failed as well, so they would not isolate the pump, and we had to drain the system down to change it.
We fitted a new pump and new pump valves, refilled and bled the system, and checked for leaks. We then ran the new pump in its air-purge mode to clear the air out of the system. Our Baxi boiler repair page covers other Baxi faults.
The heating and hot water were working again on the same visit, and the landlord and tenant were extremely happy.
In office hours (Mon–Fri 8am–5.30pm) a boiler repair is £99, covering attendance, diagnosis and the first hour, with parts quoted and agreed before we fit them. Details are on our price list.
The boiler cannot detect water moving through it, so it stops to protect itself. A failed pump is a common cause, as here; a blockage or a stuck valve can cause it too.
It was getting its 240 V supply, but the impeller inside was not spinning. Power in and no movement means the pump itself has failed.
The valves either side of the pump let it be changed without draining the system. On this job the pump valves had failed as well, so we drained down and replaced them with the pump.
After a refill there is air in the system. The new pump has a mode that helps clear air from the pump and the pipework, which we ran after bleeding the radiators.
In office hours (Mon–Fri 8am–5.30pm) a boiler repair is £99, covering attendance, diagnosis and the first hour, with parts quoted and agreed before we fit them.
Job attended and photographed by our engineers, November 2026. Written up by Saeed Iqbal, the engineer who leads Synergy Gas & Plumbing (Gas Safe registered 594385). More of our work in the area is on our Great Barr page, and every job we write up is on the case studies index.
£99 diagnosis + first hour
£99 in office hours (Mon–Fri, 8am–5.30pm) covers attendance, diagnosis and the first hour. Parts and any further work are quoted and agreed before we carry on. Out of hours, the price is quoted by phone before we set off.
No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked.
The pressure kept rising even with the boiler off. We found a pinholed plate heat exchanger and replaced it, with the pressure relief valve, from the van. No new boiler needed.
Read the case studyThe boiler was locking out on overheat because the system pump had burnt out. New pump from van stock, and a straight conversation with the landlord about the sludge that caused it and the flush that would stop it happening again.
Read the case studyBooked in for a service, the boiler was showing F.75. The original pump had failed after 18 years and its air vent was leaking. New high-efficiency pump fitted.
Read the case study£99 in office hours covers attendance, diagnosis and the first hour. Parts quoted before we fetch them.
