Ideal Spark Generator Replacement Part

The Ideal Spark Generator 173538 replacement part to fix common ignition problems such as the boiler failing to light, repeated clicking with no flame, intermittent ignition, or frequent lockouts/reset cycles. A weak or faulty Ideal spark generator can cause delayed starts and unreliable burner ignition when the boiler tries multiple times to fire up. Replacing it helps restore a strong, consistent spark for smoother start-ups and more dependable heating and hot water. Compatible with selected Ideal boilers.

Compatibility :

• • Ideal Elise: Elise H15, Elise H24
  • Ideal Esprit 2: Esprit 2 24, Esprit 2 30, Esprit 2 35
  • Ideal HE: HE 24, HE 30, HE 35
  • Ideal Evo HE Combi: Evo HE C22/24, Evo HE C22/30, Evo HE C22/35
  • Ideal Evo HE Heat / System: Evo HE H12, Evo HE H16, Evo HE H19, Evo HE H22
  • Ideal Icos HE Combi / Heat: Icos HE12, Icos HE15, Icos HE18, Icos HE24
  • Ideal Icos System HE: Icos System HE15, Icos System HE24
  • Ideal Isar HE: Isar HE24, Isar HE30, Isar HE35
  • Ideal Istor HE: Istor HE260, Istor HE325

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 (FAQs)

1. What is Ideal 173538?
Ideal 173538 is a spark generator used in compatible Ideal boilers to create the ignition spark that lights the burner.

2. What does a spark generator do in a boiler?
It sends a high-voltage pulse to the ignition electrode to produce a spark, helping the boiler ignite safely and start heating.

3. What problems can a faulty spark generator cause?
Boiler not igniting, repeated clicking but no flame, intermittent ignition, frequent lockouts, or needing multiple resets to start.

4. How do I know if my boiler spark generator is failing?
Common signs include delayed ignition, the boiler trying to fire several times, random lockouts, or ignition working sometimes but not always.

5. How do I confirm Ideal 173538 is the correct part?
Match the part number 173538 with the old part and confirm your boiler model against the compatibility list in the description.