Job ticketWolverhampton, WV10

Biasi Advance 25C: no hot water and Er 14 in a rental property

The tenant had heating but no hot water, and the boiler showed Er 14, the Advance range's circulation code. With the case off, the diverter valve was jammed with black magnetite sludge and the plate heat exchanger behind it was choked with the same.

FaultSludged diverter valve, then a blocked plate heat exchanger

FixDiverter valve replaced from van stock on the first visit; plate heat exchanger ordered and fitted on the second

ResultHot water back on day one and reliable after the second visit; system clean and magnetic filter recommended to the landlord. Photos and full write-up

Job ticketWalsall

Worcester Greenstar Ri: repeated ignition lockout, told it needed a new boiler

The customer had been told by previous engineers that the boiler was finished. It kept locking out on ignition. With the burner out, the burner gasket had perished and the electrode was damaged.

FaultPerished burner gasket and damaged ignition electrode

FixBoth replaced from van stock on the first visit, then tested through several ignition cycles

ResultRunning reliably, no new boiler needed. Photos and full write-up

Job ticketQuinton, Birmingham

Worcester Greenstar Compact CDi: control panel held up with duct tape

Booked online as a repair. The control panel was hanging down, held with tape and a piece of copper pipe. A snapped hinge clip, a common failure on the Compact, and not a reason to replace the boiler.

FaultSnapped control panel hinge clip

FixBoth hinge clips replaced from van stock; condensate pipe insulation advised

ResultPanel secure, boiler inspected, customer reassured. Photos and full write-up

Job ticketStourbridge, DY8

Worcester CDi: no hot water and an EA fault on the display

A returning customer with no hot water and EA showing. After the safety checks the fault traced to the gas valve, which is not a van-stock part on this model.

FaultFaulty gas valve

FixCorrect valve ordered and fitted on a return visit, followed by tightness, leak and operation checks

ResultHot water restored and the boiler signed off safe. Photos and full write-up

Job ticketWalsall (rental)

Overheat lockout on a landlord's boiler: the pump had burnt out

The tenant reported a boiler locking out on overheat. The system pump was found burnt out, choked with the sludge that had been circulating for years.

FaultFailed pump, packed with magnetite sludge

FixNew pump fitted from van stock on the same visit; system flush recommended to the landlord

ResultHeating back the same day; the landlord told plainly the repair was avoidable with maintenance. Photos and full write-up

Job ticketSolihull

Worcester Greenstar 28i Junior: leaking inside the case

Water inside the boiler case. The right-hand hydraulic manifold had corroded and was weeping at the joints, and the part is not one we carry.

FaultCorroded right-hand manifold

FixManifold sourced locally the same day, collected and fitted, boiler refilled and tested dry

ResultFixed in one day with no return visit. Photos and full write-up

Job ticketStourbridge (rental)

Worcester CDi: leak flagged on a gas safety check, traced to the condensate collector

Another engineer had noted a leak on the landlord's safety check. On the follow-up we traced it to the condensate collector inside the combustion box, whose seals had perished.

FaultDeteriorated condensate collector seals

FixCombustion box stripped, collector and seals replaced, box rebuilt and combustion proved on the analyser

ResultCO 79 ppm and a clean ratio on the analyser after the rebuild. Photos and full write-up

Job ticketChelmsley Wood (rental)

Glow-worm found producing carbon monoxide on a landlord inspection

Rust at the back of the heat exchanger and a CO reading on the analyser, in a house with a young family. Made safe on the spot, then repaired with the landlord's go-ahead.

FaultCracked flue collector letting combustion products escape

FixBoiler capped off and made safe; flue collector and gaskets replaced, then retested on the analyser

ResultBack in service safely rather than condemned, tenant and landlord both informed throughout. Photos and full write-up

Job ticketStourbridge, DY8

Ariston Evo combi: no hot water and overheating, fixed in one visit

The customer's Ariston Evo combi boiler had stopped producing hot water — every time a hot tap was opened, the boiler overheated instead. A fault like this can look like several different things before it's properly diagnosed.

FaultBlocked plate heat exchanger

FixPlate heat exchanger replaced — part collected mid-visit rather than booking a return trip

ResultHot water fully restored, completed in a single appointment

Job ticketErdington, Birmingham

Gledhill Pulsacoil electric boiler: total loss of hot water

The customer had no hot water at all from their Gledhill Pulsacoil electric boiler — a less common system that a lot of general boiler repair companies aren't set up to work on.

FaultCorroded immersion heater

FixImmersion heater replaced, full system tested before leaving

ResultFull hot water flow restored the same day

Job ticketSutton Coldfield

Emergency boiler breakdown replaced with a new Worcester LPG combi

The customer's existing boiler broke down and needed replacing as an emergency, rather than a planned installation.

FaultEnd-of-life boiler failure

FixNew energy-efficient Worcester LPG combi installed, backed by a 10-year manufacturer guarantee

ResultReliable heating and hot water restored, lower running costs, long-term warranty cover

Job ticketDudley

Gas leak traced to a damaged copper line beneath the floorboards

The customer reported a suspected gas leak, with the source not visible or accessible from above the floor.

FaultDamaged section of copper gas pipe under the floor

FixDamaged pipe section safely repaired, system checked to confirm the leak was fully resolved

ResultLeak fully resolved, gas supply safe again

Case Studies