Façade coaxial
Whistle and lock-out — coaxial fall on the new façade.
Boiler repair at home in Sergeli-8
Home visitDiagnostics with repairWarranty on labor
Boiler repair in Sergeli-8: a coaxial on a new façade whistles or the board throws a fault — we check the exchanger and flue before quoting.
On Baxi and Navien in southern new builds the coaxial on a new façade pulls condensate when the fall is wrong.
Sergeli-8: the boiler sits in a new-kitchen niche or on a loggia — keep the cock, gauge and coaxial free.
from 200,000 sum
Free diagnosticsExact price after diagnostics. We agree on the estimate and parts needed before work starts.
Arrival in 1-2 hours
Warranty included
Home repair
10+ years experience
Sergeli-8
Service Area
Visit time
Confirmed by phone
How to arrange a visit
- Clear the boiler niche in a new build on the southern edge of the Sergeli-8 massiv
- Share the Baxi, Navien or Vaillant model and the display fault code
- Note a coaxial whistle, no DHW or a board error after start
How the visit works
Fault board
A code after start — sensors and module before a board swap.
DHW plate
No hot water with live heat — secondary exchanger.
Exchanger & gas
Issues We Fix
Heating and DHW
- Radiators stay cold
- No hot water
- Won't hold temperature
Ignition and gas
- Won't start / no ignition
- Soot / gas smell
Pressure and leaks
- Pressure dropping
- Heat exchanger leaking
Electronics
- Display error
- Noisy operation
- Short cycling
Brands We Service
- Baxi
- Vaillant
- Ariston
- Bosch
- Ferroli
- Navien
- Buderus
- Protherm
- Immergas
- Kiturami
- Rinnai
- Fondital
Topic 1 / 3
Gas boiler heat exchanger cleaning
If radiators stay lukewarm, the boiler is slow to heat, or it short-cycles — scale in the heat exchanger is a common cause. It cuts heat transfer, raises gas consumption, and can overheat the unit.
On diagnostics the technician flushes the primary and secondary exchangers, checks temperature sensors and the return filter. We agree the scope and price before cleaning starts.
Frequently Asked Questions
Boiler not heating or showing an error?
Tell us the model and fault code — we'll advise on a home visit and prepare for diagnostics.
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