Ariston
Ariston Main Heat Exchanger 999486
Main heat exchanger for Ariston Microsystem RFFI gas boilers, transferring combustion heat to the heating and hot water circuit.
At a glance
- Also known as 1577640
£265.99
£221.66 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The main heat exchanger is the primary component that transfers heat from the burner into the boiler's water circuit. This unit is manufactured by Ariston for the Microsystem RFFI range of gas boilers. It forms the core of the appliance's heating and domestic hot water performance.
Signs this part needs replacing
- Water leaking from the heat exchanger body or its connections
- Repeated loss of system pressure with no visible external leak
- Overheating or lockout faults traced to restricted flow through the exchanger
- Kettling, banging or rumbling noises during firing
- Discoloured or contaminated system water indicating internal corrosion
Before you order
- Confirm the boiler model is an Ariston Microsystem RFFI variant
- Check the appliance serial number against the ranges listed above
- Verify the fault has been traced to the heat exchanger before ordering
- Compare the existing part number against 999486
Compliance
| Barcode / EAN | 5411692337940 |
|---|---|
| Alternative numbers | 1577640 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ARISTON MICROSYSTEM 10 RFFI - FROM SERIAL No 2320021100001 TO SERIAL No 2320024900001 | — | — | — | |
| ARISTON ARISTON MICROSYSTEM 15 RFFI - FROM SERIAL No 2320021100001 TO SERIAL No 2320024900001 | — | — | — | |
| ARISTON ARISTON MICROSYSTEM 15 RFFI - FROM SERIAL No 2320101600001 TO SERIAL No 2320106400001 | — | — | — | |
| ARISTON MICROSYSTEM 15 RFFI LPG EDITION 1 (AUG 2000) | 41-116-05 | 41-116-05 | — | — |
| ARISTON MICROSYSTEM 15 RFFI LPG EDITION 2 (FEB 2001) | 41-116-05 | 41-116-05 | — | — |
| ARISTON MICROSYSTEM 15 RFFI LPG EDITION 3 (FEB 2004) | 41-116-05 | 41-116-05 | — | — |
| ARISTON MICROSYSTEM 15 RFFI LPG EDITION 4 (SEPT 2004) | 41-116-05 | 41-116-05 | — | — |
| ARISTON MICROSYSTEM 15 RFFI NG EDITION 1 (AUG 2000) | 41-116-05 | 41-116-05 | — | — |
| ARISTON MICROSYSTEM 15 RFFI NG EDITION 2 (FEB 2001) | 41-116-05 | 41-116-05 | — | — |
| ARISTON MICROSYSTEM 15 RFFI NG EDITION 3 (FEB 2004) | 41-116-05 | 41-116-05 | — | — |
Showing 10 of 11 compatible appliances.
Documents & drawings
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