Siemens RDE20.1 Underfloor Heating Controller – Faults, Issues & Same-Day Replacement
Is your Siemens RDE20.1 underfloor heating controller giving you trouble? Many homeowners experience recurring issues with older Siemens RDE20.1 units, especially as they age or develop internal faults. If your underfloor heating is not behaving as it should, we can help.
Common Problems Customers Search For
Siemens RDE20.1 not turning off– underfloor heating stays on continuously
Underfloor heating overheating the floor
RDE20.1 display not working / unresponsive
Siemens thermostat shorting out
Underfloor heating not turning on at all
Burnt-out Siemens RDE20.1 controller
Old Siemens RDE20.1 stopped functioning
These symptoms usually point to internal relay failure, water ingress, age-related component damage, or short-circuiting inside the controller. When this happens, the heating may either never start or never shut off, creating comfort issues and potential safety concerns.
Our Solution – Instant Same-Day Replacement
Sparky G provides same-day replacement for faulty Siemens RDE20.1 units across Auckland.
Our certified electricians can quickly diagnose the fault and install a modern, reliable thermostatic controller that restores safe, accurate temperature control to your underfloor heating system.
Why Choose Sparky G for Your Replacement
Fast same-day service - subject to availability
Experienced electricians specialising in underfloor heating controllers
Wide range of compatible replacement thermostats in stock
Clean, efficient installation with minimal disruption
Compliance-focused workmanship and professional advice
Get a Quote or Book a Service
If your Siemens RDE20.1 has stopped working, is overheating the floor, or the display has gone unresponsive, contact Sparky G today.
We’ll recommend the best replacement option and organise a prompt installation.
Get in touch now for a quote or to book service with our expert team.
