Pilot Light lits but not stay

ourmoney

hi
we have a Honeywell v4600c boiler.
from yesterday we found its stoped to working when we try to on manually then just pilot light lits but once i leave gas valve its gone down. its not stay.
please can anybody help me please.
thanks.

mikemy6

Are you holding the pilot button down till the flame heats the sensor, this may take a full minute or more. If that doesn't work send a message that I can read with all the key words included.

ourmoney

thanks for your reply.
yes i hold it for more then minutes some time two minutes but as soon as i released the pilot button flame gone down. i tried few other things aswell. just holding button and swith high thermostate and switch on water and heater and continusely holding but as i realeased the button same thing happed. what i did today open it and clear the pilot pin and clean the other bit which next to that.

ourmoney

hi and if you can explain me, what is thermocouple? because i was reading some other thread which has got same problem and the mentioned about it so what do you think about

mikemy6

is the other bit a small piece of metal w/a small copper tube going to the pilot /gas control? If so you may be able to replace it if it has a nut holding it to the control valve.Shut the elec. and gas before you do anything! This is the thermocouple and must be replaced W/the same one it keeps the gas valve from opening with no pilot

mikemy6

real qwick its a sealed tube builds pressure as its heated this is what is sensed in the control if you loss the seal it wont work

ourmoney

is it the next to flame? when the pilot lit its become to red. are you talking about that bit? are you thinking is that solve this problem?
thanks.

ourmoney

yes now i understand. where can i get this bit?

ourmoney

have you got idea baout price?

mikemy6

try home depot or a local plumming supply place but this Im not sure of try the computer or phone I gotta run but could make a call when I get back within the hour
good luck

mikemy6

cheap

mikemy6

called both and they both said they carry them just be careful on the install so you dont kink the new one

ourmoney

thanks mate
if you could make a call then it will be much appriciated. i opened again and i checked thermocouple, will i have to detatch the whole parts which looks like a copper pipe or just a that bit? if its just the bit then how?
thanks again.

mikemy6

it should be a very small copper tube looks like a coiled up wire where it goes into the control it should go thru the center of a nut about 1/4 to 3/8 inch the bit (bulb) side should only be held next to the pilot W/ a screw just note the position of the bulb upon removal cause you want it to go back in the same spot.dont rip out the metal hanger at the pilot

ourmoney

thanks mate. i have replaced today and its working now.