Ideal Flame Detection Electrode 173529 Replacement
The ideal flame detection electrode 173529 detects the burner flame and confirms safe combustion so the boiler can keep running. If the electrode is dirty, worn, or damaged, it may fail to sense the flame and cause lockouts, the boiler firing then stopping, or intermittent heating and hot water. Replacing it with the correct electrode is a reliable fix that restores stable flame detection and helps reduce nuisance shutdowns.
Compatibility :
- Elise H: H15, H24
- Esprit 2: 24, 30, 35
- HE: 24, 30, 35
- Evo HE C22: 24, 30, 35
- Evo HE H: H12, H16, H19, H22
- Icos HE: 12, 15, 18, 24, 30, 36
- Icos System HE: 15, 24
- Isar HE: 24, 30, 35
- Istor HE: 260, 325
- Mexico HE: 15, 18, 24, 30, 36
Important fitting advice
We recommend that all parts are fitted by a fully qualified Gas Safe registered engineer. If you need help confirming the right part, contact us our team has 10+ years of boiler spares knowledge and friendly chat support to help you quickly.
Delivery
At Boiler Spares Hub, we dispatch orders within 1 working day (Monday-Friday). Orders placed outside working days will be dispatched on the next working day. For delivery options available for this product, please add it to your basket or check our delivery options page.
Returns
We accept 30-day returns. Returns must be in an unopened, sealed box. If we find the item has been used or installation was attempted, we may refuse the return.
Frequently Asked Questions (FAQ’s)
1. What is ideal flame detection electrode 173529?
ideal flame detection electrode 173529 is a flame sensing electrode kit used in compatible Ideal boilers to confirm the burner flame is present.
2. What does ideal flame detection electrode 173529 do?
ideal flame detection electrode 173529 detects the flame during operation and “proves” safe combustion so the boiler can continue running.
3. What symptoms suggest ideal flame detection electrode 173529 is faulty?
Repeated lockouts, boiler ignites then shuts down, intermittent heating/hot water, or flame not detected type faults.
4. Is ideal flame detection electrode 173529 the same as an ignition electrode?
No. An ignition electrode creates the spark; ideal flame detection electrode 173529 detects the flame. Some boilers use separate parts.
5. How do I confirm compatibility for ideal flame detection electrode 173529?
Match part number 173529 and your boiler model (and GC number) with the compatibility list in the description.











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