Vaillant
Vaillant Control Box 0020237674
Control box 0020237674 for Vaillant Ecofit Pure, Ecofit Sustain and Ecotec Plus boilers.
At a glance
- Also known as 1388368
Showing prices
£39.67
£33.06 ex. VAT · VAT at 20%
Available to order · 7 working days
Available to order · 7 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
This is the CONTROL BOX, part number 0020237674, manufactured by Vaillant. It is the printed circuit board assembly that governs boiler sequence and operation on the Ecofit Pure, Ecofit Sustain and Ecotec Plus appliance families. It is supplied as a control box component for service replacement.
Signs this part needs replacing
- The boiler fails to power up or the display and controls remain blank
- Persistent fault codes that cannot be cleared through the normal reset procedure
- The boiler locks out intermittently or fails to run through a full sequence
- Visible damage to the board, such as scorching, discoloured tracks or bulging components
- Controls respond erratically, or settings are lost between cycles
Before you order
- Confirm the appliance model and GC number against the fit list above
- Check the existing control box part number before ordering
- Isolate the electrical supply and verify the wiring and plug connections before condemning the board
Compliance
| Alternative numbers | 1388368 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VU 126/6-5 OVZ | 41-694-13 | 41-694-13 | — | — |
| VAILLANT VU 156/6-5 OVZ | 41-694-14 | 41-694-14 | — | — |
| VAILLANT VU 186/6-5 OVZ | 41-694-15 | 41-694-15 | — | — |
| VAILLANT VU 246/6-5 OVZ | 41-694-16 | 41-694-16 | — | — |
| VAILLANT VU 306/6-5 OVZ | 41-694-17 | 41-694-17 | — | — |
| VAILLANT VU 356/6-5 OVZ | 41-044-76 | 41-044-76 | — | — |
| VAILLANT ecoFIT PURE 412 - VU 126/6-3 OV (2016) | 41-694-08 | 41-694-08 | — | — |
| VAILLANT ecoFIT PURE 415 - VU 156/6-3 OV (2016) | 41-694-09 | 41-694-09 | — | — |
| VAILLANT ecoFIT PURE 418 - VU 186/6-3 OV (2016) | 41-694-10 | 41-694-10 | — | — |
| VAILLANT ecoFIT PURE 425 - VU 256/6-3 OV (2016) | 41-694-11 | 41-694-11 | — | — |
Showing 10 of 35 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
VAILLANT appliance manual — VU 126/6-5 OVZ (GC 41-694-13), VU 156/6-5 OVZ (GC 41-694-14), VU 186/6-5 OVZ (GC 41-694-15), VU 246/6-5 OVZ (GC 41-694-16), VU 306/6-5 OVZ (GC 41-694-17), VU 356/6-5 OVZ (GC 41-044-76), ecoTEC PLUS 412 VU 126/6-5 OVZ (2016) (GC 41-694-13), ecoTEC PLUS 415 VU 156/6-5 OVZ (2016) (GC 41-694-14), ecoTEC PLUS 418 VU 186/6-5 OVZ (2016) (GC 41-694-15), ecoTEC PLUS 424 VU 246/6-5 OVZ (2016) (GC 41-694-16), ecoTEC PLUS 430 VU 306/6-5 OVZ (2016) (GC 41-694-17), ecoTEC PLUS 435 VU 356/6-5 OVZ (2016) (GC 41-044-76)
manualmanualVAILLANT appliance manual — ecoFIT PURE 412 - VU 126/6-3 OV (2016) (GC 41-694-08), ecoFIT PURE 415 - VU 156/6-3 OV (2016) (GC 41-694-09), ecoFIT PURE 418 - VU 186/6-3 OV (2016) (GC 41-694-10), ecoFIT PURE 425 - VU 256/6-3 OV (2016) (GC 41-694-11), ecoFIT PURE 430 - VU 306/6-3 OV (2016) (GC 41-694-12), ecoFIT PURE 435 - VU 356/6-3 OV (2016) (GC 41-694-19)
manualmanualVAILLANT appliance manual — ecoFIT PURE 612 - VU 126/6-3 (2016) (GC 41-694-03), ecoFIT PURE 615 - VU 156/6-3 (2016) (GC 41-694-04), ecoFIT PURE 618 - VU 186/6-3 (2016) (GC 41-694-05), ecoFIT PURE 625 - VU 256/6-3 (2016) (GC 41-694-06), ecoFIT PURE 630 - VU 306/6-3 (2016) (GC 41-694-07)
manualmanualVAILLANT appliance manual — ecoFIT PURE 825 - VUW 256/6-3 (2016) (GC 47-044-68), ecoFIT PURE 830 - VUW 306/6-3 (2016) (GC 47-044-74), ecoFIT PURE 835 - VUW 356/6-3 (2016) (GC 47-044-70)
manualmanualVAILLANT appliance manual — ecoFIT SUSTAIN 415 - VU 156/6-3 OV (2018) (GC 41-694-33), ecoFIT SUSTAIN 418 - VU 186/6-3 OV (2018) (GC 41-694-34), ecoFIT SUSTAIN 430 - VU 306/6-3 OV (2018) (GC 41-694-35)
manualmanualVAILLANT appliance manual — ecoFIT SUSTAIN 615 - VU 156/6-3 (2018) (GC 41-694-30), ecoFIT SUSTAIN 618 - VU 186/6-3 (2018) (GC 41-694-31), ecoFIT SUSTAIN 630 - VU 306/6-3 (2018) (GC 41-694-32)
manualmanualVAILLANT appliance manual — ecoFIT SUSTAIN 825 - VUW 256/6-3 (2016) (GC 47-044-71), ecoFIT SUSTAIN 830 - VUW 306/6-3 (2016) (GC 47-044-72), ecoFIT SUSTAIN 835 - VUW 356/6-3 (2016) (GC 47-044-73)
manualNo technical questions yet for this part.
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