Ariston
Ariston Printed Circuit Board CT1 999501
Printed circuit board CT1, part 999501, for Ariston Microsystem RFFI gas boilers.
At a glance
- Part type: Printed circuit board (CT1)
- Appliance family: Ariston Microsystem RFFI
- Also known as PRINTED-CIRCUIT-BOARD-CT1, 1577658
Showing prices
£76.22
£63.52 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Ariston 999501 is a printed circuit board (CT1) used in Ariston Microsystem RFFI gas boilers. It controls the boiler's operating sequence and electrical functions. The board is identified by part number 999501 and type CT1.
Signs this part needs replacing
- Boiler fails to respond to heating or hot water demand
- No display or indicator lights on the boiler
- Repeated lockouts or fault codes
- Erratic boiler operation or unexpected shutdowns
- No ignition sequence when the boiler is called to run
Before you order
- Check the boiler model is an Ariston Microsystem RFFI
- Confirm the serial number falls within the listed range where applicable
- Check the GC number against the listed models
- Confirm the existing board is marked 999501 and CT1
Compliance
| Barcode / EAN | 5411692338091 |
|---|---|
| Alternative numbers | PRINTED-CIRCUIT-BOARD-CT1, 1577658 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ARISTON MICROSYSTEM 10 RFFI - FROM SERIAL No 2320021100001 TO SERIAL No 2320024900001 | — | — | — | |
| ARISTON ARISTON MICROSYSTEM 10 RFFI - FROM SERIAL No 2320101600001 TO SERIAL No 2320106400001 | — | — | — | |
| 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 ARISTON MICROSYSTEM 21 RFFI - FROM SERIAL No 2320021100001 TO SERIAL No 2320030800001 | — | — | — | |
| ARISTON ARISTON MICROSYSTEM 28 RFFI - FROM SERIAL No 2320021100001 TO SERIAL No 2320030800001 | — | — | — | |
| ARISTON MICROSYSTEM 10 RFFI LPG EDITION 1 (AUG 2000) | 41-116-04 | 41-116-04 | — | — |
| ARISTON MICROSYSTEM 10 RFFI LPG EDITION 2 (FEB 2001) | 41-116-04 | 41-116-04 | — | — |
| ARISTON MICROSYSTEM 10 RFFI LPG EDITION 3 (FEB 2004) | 41-116-04 | 41-116-04 | — | — |
| ARISTON MICROSYSTEM 10 RFFI LPG EDITION 4 (SEPT 2004) | 41-116-04 | 41-116-04 | — | — |
Showing 10 of 34 compatible appliances.
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
manual
ARISTON appliance manual — MICROSYSTEM 10 RFFI LPG EDITION 1 (AUG 2000) (GC 41-116-04), MICROSYSTEM 10 RFFI LPG EDITION 2 (FEB 2001) (GC 41-116-04), MICROSYSTEM 10 RFFI LPG EDITION 3 (FEB 2004) (GC 41-116-04), MICROSYSTEM 10 RFFI LPG EDITION 4 (SEPT 2004) (GC 41-116-04), MICROSYSTEM 10 RFFI NG EDITION 1 (AUG 2000) (GC 41-116-04), MICROSYSTEM 10 RFFI NG EDITION 2 (FEB 2001) (GC 41-116-04), MICROSYSTEM 10 RFFI NG EDITION 3 (FEB 2004) (GC 41-116-04), MICROSYSTEM 10 RFFI NG EDITION 4 (SEPT 2004) (GC 41-116-04)
manualmanualARISTON appliance manual — MICROSYSTEM 15 RFFI LPG EDITION 1 (AUG 2000) (GC 41-116-05), MICROSYSTEM 15 RFFI LPG EDITION 2 (FEB 2001) (GC 41-116-05), MICROSYSTEM 15 RFFI LPG EDITION 3 (FEB 2004) (GC 41-116-05), MICROSYSTEM 15 RFFI LPG EDITION 4 (SEPT 2004) (GC 41-116-05), MICROSYSTEM 15 RFFI NG EDITION 1 (AUG 2000) (GC 41-116-05), MICROSYSTEM 15 RFFI NG EDITION 2 (FEB 2001) (GC 41-116-05), MICROSYSTEM 15 RFFI NG EDITION 3 (FEB 2004) (GC 41-116-05), MICROSYSTEM 15 RFFI NG EDITION 4 (SEPT 2004) (GC 41-116-05)
manualmanualARISTON appliance manual — MICROSYSTEM 21 RFFI LPG EDITION 1 (AUG 2000) (GC 41-116-06), MICROSYSTEM 21 RFFI LPG EDITION 2 (JAN 2004) (GC 41-116-06), MICROSYSTEM 21 RFFI LPG EDITION 3 (SEPT 2004) (GC 41-116-06), MICROSYSTEM 21 RFFI NG EDITION 1 (AUG 2000) (GC 41-116-06), MICROSYSTEM 21 RFFI NG EDITION 2 (JAN 2004) (GC 41-116-06), MICROSYSTEM 21 RFFI NG EDITION 3 (SEPT 2004) (GC 41-116-06), MICROSYSTEM 28 RFFI LPG EDITION 1 (AUG 2000) (GC 41-116-07), MICROSYSTEM 28 RFFI LPG EDITION 2 (JAN 2004) (GC 41-116-07), MICROSYSTEM 28 RFFI LPG EDITION 3 (SEPT 2004) (GC 41-116-07), MICROSYSTEM 28 RFFI NG EDITION 1 (AUG 2000) (GC 41-116-07), MICROSYSTEM 28 RFFI NG EDITION 2 (JAN 2004) (GC 41-116-07), MICROSYSTEM 28 RFFI NG EDITION 3 (SEPT 2004) (GC 41-116-07)
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