Baxi
Baxi Printed Circuit Board LMU 34 7690353
Printed circuit board LMU 34 for Baxi and Potterton 40 kW combi boilers, controlling ignition, modulation and safety functions.
At a glance
- Also known as 1119363
£273.78
£228.15 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 Baxi 7690353 is a printed circuit board, designated LMU 34, used in Baxi and Potterton 40 kW combi boilers. It controls ignition, flame supervision, fan and pump operation, and burner modulation. The board is supplied on its own.
Signs this part needs replacing
- Boiler has no power or display and does not respond to the controls
- Repeated lockouts or fault codes that clear only temporarily
- Burner fails to ignite or fires erratically after gas and ignition checks
- Fan, pump or modulation behaviour that does not follow demand
- Visible damage, corrosion or burning on the board
Before you order
- Confirm the boiler model and, where listed, the serial number suffix
- Check the GC number against the appliance data badge
- Compare the part number on the existing board with 7690353
- Isolate the electrical supply before fitting
Compliance
| GC number | H53-960 |
|---|---|
| Barcode / EAN | 5039177841821 |
| Alternative numbers | 1119363 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI DUO-TEC 40 COMBI ErP FROM SERIAL No. PST16 - ENDING BC | 47-077-03 | 47-077-03 | — | — |
| BAXI DUO-TEC 40 COMBI ErP SERIAL No. ENDING AC | 47-077-03 | 47-077-03 | — | — |
| BAXI DUO-TEC 40 HE | 47-075-26 | 47-075-26 | — | — |
| BAXI DUO-TEC COMBI 40 HE A | 47-075-38 | 47-075-38 | — | — |
| BAXI PLATINUM + 40 COMBI | 47-077-41 | 47-077-41 | — | — |
| BAXI PLATINUM 40 COMBI ErP SERIAL No. ENDING AC | 47-077-07 | 47-077-07 | — | — |
| BAXI PLATINUM 40 COMBI ErP SERIAL No. ENDING BC | 47-077-07 | 47-077-07 | — | — |
| BAXI PLATINUM 40 COMBI ErP SERIAL No. ENDING CC | 47-077-07 | 47-077-07 | — | — |
| BAXI PLATINUM 40 COMBI ErP SERIAL No. ENDING DC | 47-077-07 | 47-077-07 | — | — |
| BAXI PLATINUM 40 COMBI ErP SERIAL No. ENDING EC | 47-077-07 | 47-077-07 | — | — |
Showing 10 of 17 compatible appliances.
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.
BAXI appliance manual — DUO-TEC 40 COMBI ErP FROM SERIAL No. PST16 - ENDING BC (GC 47-077-03)
manualmanualBAXI appliance manual — DUO-TEC 40 COMBI ErP SERIAL No. ENDING AC (GC 47-077-03)
manualmanualBAXI appliance manual — DUO-TEC 40 HE (GC 47-075-26)
manualmanualBAXI appliance manual — DUO-TEC COMBI 40 HE A (GC 47-075-38)
manualmanualBAXI appliance manual — PLATINUM + 40 COMBI (GC 47-077-41)
manualmanualBAXI appliance manual — PLATINUM 40 COMBI ErP SERIAL No. ENDING AC (GC 47-077-07), PLATINUM 40 COMBI ErP SERIAL No. ENDING BC (GC 47-077-07), PLATINUM 40 COMBI ErP SERIAL No. ENDING CC (GC 47-077-07), PLATINUM 40 COMBI ErP SERIAL No. ENDING DC (GC 47-077-07), PLATINUM 40 COMBI ErP SERIAL No. ENDING EC (GC 47-077-07)
manualmanualBAXI appliance manual — PLATINUM 40HE COMBI (GC 47-075-30)
manualmanualBAXI appliance manual — PLATINUM COMBI 40 HE A (GC 47-075-34)
manualmanualPOTTERTON appliance manual — TITANIUM 40 (GC 47-393-42)
manualmanualPOTTERTON appliance manual — TITANIUM COMBI 40 ErP - SERIAL No. ENDING AC (GC 47-393-53), TITANIUM COMBI 40 ErP - SERIAL No. ENDING BC & CC (GC 47-393-53), TITANIUM COMBI 40 ErP - SERIAL No. ENDING DC (GC 47-393-53), TITANIUM COMBI 40 ErP - SERIAL No. ENDING EC (GC 47-393-53)
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