Vaillant
Vaillant Relay 0020166930
Relay for Vaillant aroTHERM heat pumps manufactured before 2016, part number 0020166930.
At a glance
- Also known as 1386142
Showing prices
£238.49
£198.74 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
This is a relay manufactured by Vaillant for aroTHERM heat pump systems. It is the version used in units produced before 2016. The relay switches electrical loads within the appliance's control circuit.
Signs this part needs replacing
- The appliance fails to power on or specific functions do not operate.
- Intermittent operation or unexpected shutdowns.
- A clicking sound from the relay but no corresponding action.
- Visible burn marks or discolouration on the relay.
- Error codes relating to control circuit faults.
Before you order
- Check the appliance model number against the fits list.
- Confirm the manufacturing date is before 2016.
- Verify the part number 0020166930 matches the existing component.
- Consult a qualified heating engineer if unsure.
Compliance
| Alternative numbers | 1386142 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VWZ MEH 60 | — | — | — | |
| VAILLANT VWZ MEH 61 | — | — | — | |
| VAILLANT VWZ MWT 150 | — | — | — | |
| VAILLANT aroTHERM VWZ MEH 60 (2013-2021) | — | — | — | |
| VAILLANT aroTHERM VWZ MEH 61 (2013-2021) | — | — | — | |
| VAILLANT aroTHERM VWZ MWT 150 | — | — | — | |
| VAILLANT aroTHERM VWZ MWT 150 (2013-2021) | — | — | — |
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.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.