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Express delivery for Tuesday Available Until 4pm Monday
UK Mainland Only,
3pm cut-off for Highlands and Islands


Express delivery for Tuesday Available Until 4pm Monday
UK Mainland Only,
3pm cut-off for Highlands and Islands

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Danfoss Randall 103

Brand: Danfoss Randall
HCO Code: 07A01
Price: £55.16
Ex VAT: £45.97
Stock: In Stock
   - OR -   
Q: hi will the 103 work on a immersion heater.

A: I'm afraid it is not suitable for an immersion heater.
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

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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

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2217 Reviews
Very pleased quick response and delivery
I ordered four TRV's and required a next day delivery, which I paid for and had qualified to get. They should have been delivered before 6.30pm next day. I had hoped not to be the last delivery of the day but waited patiently. The tracking system said it was on board, so I waited at the job hoping it was just late. It did not turn up till the day after that and It was only luck that someone was in to receive them. I reported the incident to you and was told I would be refunded "the difference" (Which has not happened yet). I am disgusted that I paid for a delivery service that I did not get I.E. "Next day service" and have to pay at all for it. To be offered "The difference" is an insult and unjust. Don't advertise "Next day service" if you can't deliver it. I appreciate this is contracted out. I hope they are suitably dealt with, but as it is you who has been paid, you get the complaint. The products (TRV's) are fine and I have no complaint with them at all. Shame about the delivery service.
Great service, fast delivery (to Ireland!) and keen prices.