Vaillant Boiler Time Switch 150 Analogue Timer

This analogue Time Switch 150 timer controls when your Vaillant boiler turns heating on and off. Over time, worn contacts, stuck pins, or internal faults can cause missed schedules, heating running constantly, or not switching on at all. Replacing the correct timer helps restore reliable programmed heating times and easier day-to-day control. Installation should be carried out by a qualified engineer.

Compatibility :

• Timeswitch 150 Plug In 24 Hour Analogue Timer

Important fitting advice

We recommend that all parts are fitted by a fully qualified Gas Safe registered engineer. If you need help confirming the right part, contact us our team has 10+ years of boiler spares knowledge and friendly chat support to help you quickly.

Delivery

At Boiler Spares Hub, we dispatch orders within 1 working day (Monday-Friday). Orders placed outside working days will be dispatched on the next working day. For delivery options available for this product, please add it to your basket or check our delivery options page.

Returns

We accept 30-day returns. Returns must be in an unopened, sealed box. If we find the item has been used or installation was attempted, we may refuse the return.

Frequently Asked Questions (FAQ’s)

1. What is the timer switch 150 on a Vaillant boiler?
The simple analogue heating control for your home. Using timeSWITCH 150 couldn’t be more simple: a 24-hour mechanical timer with an analogue dial control. The device is flexible and easy to control. Set the time you’d like your heating to switch on and off each day, with up to 48 on/off times.

2. Why isn’t my mechanical timer switch working?
Mechanical timers often stop working due to wrong settings, power supply issues, or loose wiring. Also, worn gears/stuck parts or a misaligned yellow clock wheel can prevent the dial from switching ON/OFF properly.

3. Why is my boiler not responding to the timer?
If your boiler timer isn’t working, the first thing you should do is check if there is a power supply issue causing the problem. Ensure that the electrical connection to your boiler timer is secure and that there hasn’t been a power cut or any other electrical problem in your area recently.

4. How to reset Vaillant boiler timer?
The reset button is located on the boiler’s display and will likely show a flame with a line crossed through it. You will only need to press the reset button for three seconds before the boiler resets and the display screen should change.

5. What are common boiler problems?
Common boiler problems include inconsistent heating, where some rooms remain cold, and pressure drops, indicating potential leaks or system issues. Noisy operation, such as banging or whistling, can signal trapped air or internal malfunctions.