Immersion Heater faulty - testing..?

[stevedarby]

I have an immersion heater, and use it to heat my hot water in the cylinder. It has stoppe dheating the water up, so I tested the thermostat for co ntinuity with the stat turned up and there was no BEEP. So I now want to test the immersion heater itself, but cannot remember the Ohms I should be looking for, it is a 3KW heater, top entry. The fuse to the heater is good by the way. Also, when replacing (if the heater is at fault after testing) - is PTFE tape good to use round the heater threads or just the fibre washer and any compound? I don't want a leak if I can helpt it.

Thanks for your help.

 

[griggs]

Element resistance should be approx 19.2ohms. (assuming 3kW element)

Just use the fibre washer

 

[stevedarby]

ok, thanks. So more than that and faulty, or less than that and faulty??

hawk white any god around the fibre washer ?

 

[Nige F]

No jointing compound It`ll make it hard to get out next time . Ptfe is ok . and what I always used

 

[stevedarby]

how much ptfe is sufficient, would you recommend?