Vaillant
Vaillant Wiring Harness 0020231117
Vaillant wiring harness 0020231117 for HOME Combi, Regular and System -A series boilers.
At a glance
- Also known as 1388160
£9.42
£7.85 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 Vaillant 0020231117 wiring harness is a pre-assembled loom used to connect electrical components within the boiler. It is fitted across the Vaillant HOME Combi, HOME Regular and HOME System -A appliance families. The harness carries control and power wiring between the boiler's electrical parts, so continuity and correct routing matter for fault-free operation.
Signs this part needs replacing
- Boiler fails to power up or intermittently loses power with no other obvious cause
- Fault codes relating to communication or sensor signal loss that persist after sensor checks
- Visible damage to the loom: chafed, scorched, brittle or exposed conductors
- Loose, corroded or heat-damaged connector terminals that will not seat securely
- Intermittent faults that change when the wiring is moved or the connectors are disturbed
Before you order
- Confirm the boiler model and variant against the fitment list above
- Check the existing harness connectors and pin count match the part being ordered
- Inspect the fault thoroughly first, as intermittent electrical faults can originate at sensors, the PCB or the supply rather than the loom
- Isolate the appliance from the electrical supply before any inspection or replacement work
Compliance
| Alternative numbers | 1388160 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT HOME COMBI 25 -A | 47-044-62 | 47-044-62 | — | — |
| VAILLANT HOME COMBI 30 -A | 47-044-63 | 47-044-63 | — | — |
| VAILLANT HOME COMBI 35 -A | 47-044-64 | 47-044-64 | — | — |
| VAILLANT HOME REGULAR 12 -A | 41-044-88 | 41-044-88 | — | — |
| VAILLANT HOME REGULAR 15 -A | 41-044-89 | 41-044-89 | — | — |
| VAILLANT HOME REGULAR 18 -A | 41-044-90 | 41-044-90 | — | — |
| VAILLANT HOME REGULAR 25 -A | 41-044-92 | 41-044-92 | — | — |
| VAILLANT HOME REGULAR 30 -A | 41-044-93 | 41-044-93 | — | — |
| VAILLANT HOME SYSTEM 12 -A | 41-044-94 | 41-044-94 | — | — |
| VAILLANT HOME SYSTEM 15 -A | 41-044-95 | 41-044-95 | — | — |
Showing 10 of 12 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.
VAILLANT appliance manual — HOME COMBI 25 -A (GC 47-044-62), HOME COMBI 30 -A (GC 47-044-63), HOME COMBI 35 -A (GC 47-044-64)
manualmanualVAILLANT appliance manual — HOME REGULAR 12 -A (GC 41-044-88), HOME REGULAR 15 -A (GC 41-044-89), HOME REGULAR 18 -A (GC 41-044-90), HOME REGULAR 25 -A (GC 41-044-92), HOME REGULAR 30 -A (GC 41-044-93)
manualmanualVAILLANT appliance manual — HOME SYSTEM 12 -A (GC 41-044-94), HOME SYSTEM 15 -A (GC 41-044-95), HOME SYSTEM 18 -A (GC 41-044-96), HOME SYSTEM 25 -A (GC 41-044-97)
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