Centurion · Same-day
Gas Boiler Not Igniting in Centurion
The boiler attempts to start, clicks or purges, then locks out without lighting. This page covers how we diagnose and repair it on boilers in Centurion.
This fault is normally treated as same-day work because the site has effectively lost hot water, steam or safe operation.
Extensive residential estates plus corporate and light industrial parks with modern heat pump plant. Gauteng municipal water is moderately hard, so scale on elements and heat exchangers is the single most common cause of falling performance.
- Area
- Centurion, Midrand & Centurion
- Equipment
- Boilers
- Call
- 069 268 0988
What we find here
Likely causes
- Failed ignition electrode or transformer
- No gas supply or closed valve
- Gas solenoid or valve failure
- Air pressure switch not proving
- Blocked flue or condensate trap
How it is confirmed
Diagnostic sequence
- Electrode gap and spark test
- Gas pressure measurement at the train
- Air proving switch continuity test
- Flue and condensate path inspection
Repair route
Repair services in Centurion
Boiler Repairs Centurion
Repairs to gas, diesel, electric and steam boilers across Gauteng.
Boiler Maintenance Centurion
Planned boiler servicing, combustion tuning and safety device testing.
Gas Boiler Repairs Centurion
Natural gas and LPG boiler repairs, ignition and flame failure faults.
Gas Boiler Maintenance Centurion
Annual gas boiler servicing, tightness testing and combustion tuning.
Industrial Boiler Repairs Centurion
Heavy-duty boiler plant repairs for factories and processing sites.
Coverage
Nearby areas
- Gas Boiler Not Igniting Waterfall Country Estate
- Gas Boiler Not Igniting Waterfall Estate
- Gas Boiler Not Igniting Waterfall Valley
- Gas Boiler Not Igniting Waterfall Hills
- Gas Boiler Not Igniting Waterfall Village
- Gas Boiler Not Igniting Waterfall Ridge
- Gas Boiler Not Igniting Carlswald
- Gas Boiler Not Igniting Carlswald North
- Gas Boiler Not Igniting Carlswald Estate
- Gas Boiler Not Igniting Kyalami Estate
FAQs
Frequently asked questions
What causes gas boiler not igniting?
The usual causes are failed ignition electrode or transformer, no gas supply or closed valve, gas solenoid or valve failure, air pressure switch not proving. Which one it is can only be confirmed by measurement, not by symptom alone.
How do you diagnose it?
Electrode gap and spark test; Gas pressure measurement at the train; Air proving switch continuity test; Flue and condensate path inspection. The readings are recorded so the repair decision is based on data.
Can I keep using the system in the meantime?
No — isolate the plant and call 069 268 0988. Running it in this condition risks further damage or an unsafe situation.
Do you attend this fault in Centurion?
Yes. Midrand and Centurion sit between the Johannesburg and Pretoria routes, so attendance windows are usually the shortest of any area. Modular heat pump banks and BMS integration are common here.
Gas Boiler Not Igniting — Centurion
Modular heat pump banks and BMS integration are common here.