Gas oven will not heat — bake ignitor glows but the gas valve never opens
Very common issue — here is how we diagnose it, which parts are usually involved, and when to call a pro.
- Very common
- Professional repair only
- Pro Range
Symptoms
What you will notice
- Oven does not heat
- Ignitor glows but no flame
- Long delay before ignition
- Burner lights eventually then stops
Likely causes
What is usually behind it
- Weak bake ignitor — still glows but no longer draws enough current to open the gas safety valvemost common by a wide margin
- Gas safety valve failedless common
- Open circuit ignitorcommon
Diagnostics
How a technician diagnoses it
Our technicians follow the factory diagnostic path for this fault.
- 1A glowing ignitor is NOT proof of a good ignitor. Measure the current draw in series with a clamp meter.
- 2Where the bake and broil ignitors are the same part number, swapping them is a fast confirmation test.
- 3A defective ignitor cannot be repaired — replacement is the only option.
Safety & DIY disclaimer
Guides on this site are for information only. Appliance repair involves 240V electricity, gas connections, refrigerant and heavy cast-iron parts — anything you do yourself is at your own risk and can damage the appliance or cause injury. The safe option is to book a qualified technician.
Parts
Parts usually needed
We confirm the failing part with diagnostics before replacing anything.
Coverage
Appliances affected
Keep reading
Related AGA problems
Frequently asked questions
Can I fix this myself?
Professional repair only. This fault involves gas or 240V electrical components — diagnosis and repair should be done by a licensed technician.
How much does it cost to fix this issue?
Every visit starts with diagnostics and a written estimate — the diagnostic fee applies toward your repair when you proceed. We never start work without your approval.
Not sure? We diagnose first.
Book a diagnostic visit — you get a written estimate before any work, and the diagnostic fee applies toward your repair.
Mon–Sun 8:00AM–8:00PM
Independent service company — not affiliated with or authorized by AGA / AGA Rangemaster (Middleby). We repair out-of-warranty AGA appliances.