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Dual Safety Thermostat 18" (89445)

£ 11.79INC VAT

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Dual Safety Thermostat 18" (89445)

Dual safety system prevents overheating problems. Not for use with Ariston immersion heaters.

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View all: Unbranded Immersion Heaters

£11.79INC VAT

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Dual Safety Thermostat 18" is rated 4.0 out of 5 by 89.
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Rated 5 out of 5 by from well pleased This Product was very good value, well packaged and readily available. The click and collect worked like a charm and took less than 5 minutes to complete. What's not to like?
Date published: 2020-10-31
Rated 5 out of 5 by from Excellent Replacement Part I needed a replacement immersion heater thermostat in a hurry. I went on line and my local Screwfix depot had the correct length one in stock. I ordered it and collected it within the hour. The thermostat fitted perfectly when i installed it and checked it through the temperature range. Highly recommended.
Date published: 2020-09-11
Rated 4 out of 5 by from Vicky Best item I recommend ‘‘tis item very helpful Like this
Date published: 2020-09-05
Rated 5 out of 5 by from Spot on Really pleased with how quick and easy it was to collect this part last minute on a Sunday afternoon. Easy replacement part which was causing an immersion heater to fail. Only took about 10 minutes to fit.
Date published: 2020-09-01
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Will this replace a Sunvic VKL2401

Asked by: Jerz
Hello Jerz, Yes, this should be a suitable replacement Thank you for using Q&A AS
Answered by: ProductSupport1
Date published: 2020-07-21

Will this replace a TIH 550

Asked by: Guscom
Hello Guscom, This will replace the thermostat in a TIH 550. Thank you for using Q&A (CW)
Answered by: Cwalm
Date published: 2020-07-13

Will this replace BMST 18 Thermostat

Asked by: StevieGil
Hello StevieGil, Yes, this should be a suitable replacement. Thank you for using Q&A (CW)
Answered by: Cwalm
Date published: 2020-07-13

Why does this thermostat trip out?

I bought one on 1 April as the old one was tripping out and needed constantly resetting. This one has worked for about 10 days or so and has now tripped out - our water is lukewarm so has not overheated.
Asked by: plmc
The thermal cut out can operate on these if your immersion heater is too long for the cylinder (top entry style). In my experience it was/is quite common for the installer to use the longest element they can fit in the cylinder in an attempt to speed up heating time/maximise hot water volume but manufacturers have a specified clearance from bottom of cylinder to end of element. Not an issue on old style thermostats before the cut out was built in but replace with a modern version and you can get this nuisance operation.
Answered by: Ddasparky
Date published: 2020-11-14

Which inputs are positive or neutral?

There is not a indication for wires to be connected. No sigh mark as + or - How do I connect the wires, which side etc? I am sure it does matter so I don't want to mess up and blow the unit.
Asked by: Remiii
Hello Remiii, The polarity is not important on the Dual Safety Thermostat. Thank you for using Q&A (CW)
Answered by: Cwalm
Date published: 2020-01-22
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Specification
Manufacturer Guarantee 1 Year Guarantee
Pack Size 1
Pieces in Pack/Case 1
Product Length 18 "
Product Type Dual Safety Thermostat
Temperature Range 20 to 70 °C