Welcome visitor you can login or create an account.

Express delivery for Tuesday Available Until 3pm Tomorrow


Express delivery for Tuesday Available Until 3pm Tomorrow

Enter your email to be informed when this product arrives:

Send Close

Enter your email to be informed when this product arrives:
Send Close

Danfoss Randall 103

Brand: Danfoss Randall
HCO Code: 07A01
Price: £52.04
Ex VAT: £43.37
Stock: In Stock
   - OR -   
Q: I have a mechanical Randall 103 that just controls my central heating,the clock has stopped going round.Can I replace this with a digital one that just fits on the same backplate has it is all tiled around.

A: Yes, you need the 103E7: https://www.heatingcontrolsonline.co.uk/danfoss-randall-103e7-p-154.html
Q: Hello, Will the Randall 103 replace the 103E Electronic Timeswitch - fitted to a 2004 combi boiler - without any wiring alterations?

A: Yes it will.
Q: Hi what is the switchable current rating please

A: It is 3 amps resistive 1 amp inductive.
Q: What are the dimensions of the product? I am replacing existing 103. Thank you.

A: Overall Dimensions : 106mm wide, 135mm high, 63mm deep
Q: Hi Will the randall 103 replace the 102 please without requiring new back plate. Thanks Pete

A: No, you will need another 102. Please see the link below. http://www.heatingcontrolsonline.co.uk/danfoss-randall-102-p-149.html

Ask a question about Danfoss Randall 103

Your Name:
Your Email:

Your Question: Note: HTML is not translated!

Enter the code in the box below:

A range of general-purpose timeswitches which provide a single output circuit. The range includes a simple 24-hour electro-mechanical model plus an electronic model which offers 7-day or 5/2 day operation.

All three units fit the GP wallplate and have an identical wiring configuration allowing systems to be upgraded without the need for rewiring. Please note this unit is for replacement purposes only (no backplate included)

The electro-mechanical 103 has a Timed Off Constant switch and a thumbwheel which allows early selection of future switching operations.All models show clearly the current state of the output.


Compatible alternatives with same backplate & wiring:
Danfoss Randall 103E (obsolete)
Danfoss Randall 103E5 (obsolete)
Danfoss Randall 103E7 - 7 day digital version of 103

Write a review

Your Name:

Your Review: Note: HTML is not translated!

Rating: Bad            Good

Enter the code in the box below:


Heating Controls Online is rated 4.90 stars by Reviews.co.uk based on 1898 merchant reviews

4.90 / 5 Rating
1898 Reviews
Item exactly as described and delivered promptly.
Excellent service
The staff are helpful....the delivery is quick...I will use them again