Bryanston · Same-day
Gas Boiler Not Igniting in Bryanston
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 Bryanston.
This fault is normally treated as same-day work because the site has effectively lost hot water, steam or safe operation.
Larger homes with multiple geysers, heat pumps and pool heating, often on 400 kPa systems. Gauteng municipal water is moderately hard, so scale on elements and heat exchangers is the single most common cause of falling performance.
- Area
- Bryanston, Johannesburg
- 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 Bryanston
Boiler Repairs Bryanston
Repairs to gas, diesel, electric and steam boilers across Gauteng.
Boiler Maintenance Bryanston
Planned boiler servicing, combustion tuning and safety device testing.
Gas Boiler Repairs Bryanston
Natural gas and LPG boiler repairs, ignition and flame failure faults.
Industrial Boiler Repairs Bryanston
Heavy-duty boiler plant repairs for factories and processing sites.
Coverage
Nearby areas
- Gas Boiler Not Igniting Lenasia
- Gas Boiler Not Igniting Sandown
- Gas Boiler Not Igniting Illovo
- Gas Boiler Not Igniting Hyde Park
- Gas Boiler Not Igniting Douglasdale
- Gas Boiler Not Igniting Sebokeng
- Gas Boiler Not Igniting Alexandra
- Gas Boiler Not Igniting Bryanston East
- Gas Boiler Not Igniting Bryanston West
- Gas Boiler Not Igniting Bryanston Ext 3
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 Bryanston?
Yes. Technicians work out of the central Johannesburg base, which keeps travel time short for northern-suburb call-outs. Multi-geyser homes benefit from a single consolidated service visit.
Gas Boiler Not Igniting — Bryanston
Multi-geyser homes benefit from a single consolidated service visit.