Can the Webasto 7-Day Timer Heatmiser NeoStat replace a 1530 Controller on a Webasto Thermo Top Narrowboat Heater?

Question

Can the Webasto 7-Day Timer Heatmiser NeoStat replace a 1530 Controller on a Webasto Thermo Top Narrowboat Heater?

This question is related to Webasto 7 Day Marine Timer Programmer Thermo Top 12v Heater | 4110551A.

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Answers (1)

Answered by Butler Technik's Matthew Varlow
Posted 6th November, 2025 at 12:08 by Matthew Varlow

The Webasto 7-Day Timer Controller 4110551A Can be used in replacement of the Webasto 1530 timer when using the included adapter harness. The new controller version connects to the same 4-pin plug on the Webasto Thermo Top C Water Heater wiring harness. 

Please see attached PDF page from the Webasto timer book.

Full operating and installation instructions canbe found here - https://www.butlertechnik.com/downloads/cms/7676/heatmiser-tm1-webasto-timer-upgrade-installation-manual.pdf

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