This part is fitted to the older standard efficiency boilers that have a permanent pilot light, they work in a way by making a small electrical charge which activates an electromagnet to open a valve to allow gas or water to go through the system. they are an early way of detecting if there is a flame present. They are made from 2 dissimilar metals that when heated generates a small electrical current that is then sent down to the gas valve to hold in the pilot solenoid on the gas valve allowing the user to let go of the knob.

If the pilot light goes out for any reason the thermocouple cools down, the electrical current decreases allowing the pilot solenoid to drop out. Once the pilot solenoid has dropped out the gas to the burner is extinguished and the boiler is switched off for safety.

Potterton Thermocouple 243215

Part: 243215

Price: £23.95
Potterton Kingfisher Thermocouple 402905

Part: 402905

Price: £8.95
Baxi Q309A2788 Thermocouple

Part: Q309A2788

Price: £8.37
Chaffoteaux 60081394 Flame Supervision Kit

Part: 60081394

Price: £39.92
Chaffoteaux 60035083 Corvec Thermocouple

Part: 60035083

Price: £23.60
Main Thermocouple 786/9641

Part: 786/9641

Price: £7.85
Potterton Thermocouple 225496BAX

Part: 225496BAX

Price: £6.95
Baxi 225496BAX Solo Wm Rs Thermocouple

Part: 225496BAX

Price: £6.95
Glowworm S900001 Hideaway Thermocouple

Part: S900001

Price: £12.75
Potterton Thermocouple 2500M120

Part: 2500M120

Price: £4.79
Baxi 102005 Bermuda Thermocouple

Part: 102005

Price: £8.95
Potterton Thermocouple 10/13848

Part: 10/13848

Price: £10.75
Potterton Thermocouple 230677

Part: 230677

Price: £7.45
Potterton Thermocouple 243644

Part: 243644

Price: £10.45
Saunier Duval S202432 Thermocouple

Part: S202432

Price: £14.88
Saunier Duval S202435 Thermocouple

Part: S202435

Price: £10.50
Main Thermocouple 5110886

Part: 5110886

Price: £52.09
Ideal 111880 Classic Thermocouple

Part: 111880

Price: £8.95
Baxi 243215 Brazillia Thermocouple

Part: 243215

Price: £23.95
Ravenheat 5012076 Thermocouple

Part: 5012076

Price: £24.59
Main Thermocouple 2500M120

Part: 2500M120

Price: £4.79
Glowworm S202432 Spacesaver Thermocouple

Part: S202432

Price: £14.88
Ideal 002700 Concord & Elan Thermocouple

Part: 002700

Price: £8.95
Ideal 004058 Elan & Mexico Thermocouple

Part: 004058

Price: £16.49
Potterton Thermocouple Nut 092136

Part: 092136

Price: £6.35
Worcester Bosch 87072020180 Thermocouple

Part: 87072020180

Price: £21.05
Ferroli 36702070 Optima Thermocouple

Part: 36702070

Price: £9.00
Ferroli 39801490 Optima 900 Thermocouple

Part: 39801490

Price: £18.38
Potterton Thermocouple 786/9641

Part: 786/9641

Price: £7.85
Chaffoteaux 60065964 Challenger Thermocouple

Part: 60065964

Price: £21.84
Baxi 226262 Ebony & Gasflame Thermocouple

Part: 226262

Price: £14.25
Saunier Duval S202445 Thermocouple

Part: S202445

Price: £10.95
Main Thermocouple 402918

Part: 402918

Price: £8.95
Glowworm S900004 Fireblaze Thermocouple

Part: S900004

Price: £7.98
Ideal 056249 Concord Thermocouple

Part: 056249

Price: £27.30
Ariston 60031243 Maxiflame Thermocouple

Part: 60031243

Price: £28.39
Baxi 786/9641 Thermocouple

Part: 786/9641

Price: £7.85
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