boiler not turning on
#1
02-02-09, 06:33 PM
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boiler not turning on
Hi guy i have a boiler that is about 2 years old. its a forced hot water direct vent. Im not sure if or how to bleed the system. This is my issue. heat was working 3 days ago fine. now the boiler is not firing. and i have no heat. i can hear the curculator pump. The ciculator pump is hot and feels like its pumping hot water but the line coming out of the pump is not hot. any ideas 
#2
02-02-09, 07:15 PM
now the boiler is not firing.
When you say it is not firing, do you mean that the burner does not light? no fire?
What boiler? gas or oil? etc... need more info.
Can you find the pressure and temperature gauge on the boiler and tell us what the readings are?
#3
02-02-09, 09:26 PM
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its a gas boiler. when i say it dosent firer what i mean is its not turning on for when the thermostat calls. I tried jumping the connection on boiler to rule out thermostat. The circulator pump is hot like its pumping hot water but the pipe that comes out of the circulator pump is not hot. i also open the drain on the boiler and that water was also not hot. ill go down and check the gauge in the morning. ill also get model number ect.
#4
02-03-09, 02:23 PM
i mean is its not turning on for when the thermostat calls
I tried jumping the connection on boiler to rule out thermostat.
From what you are telling us, it sounds as though the circulator is running (it's hot), but the burner is not firing because you said the water in the boiler is cool...
Yes, let us know the model of the boiler.
#5
02-03-09, 04:30 PM
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when i jumped the thermostat at the boiler nothing happened.
wen i say it dosent fire is that the boiler isnot getting the call to turn on.
update:
i shut off emergency switch for a few hours. then turned back on. it turned on and sent heat worked like this for a few hours now pipes are cold and thermostat wires are jumped so its at a cnstant call for heat. ill get model number sorry for the delay.
wen i say it dosent fire is that the boiler isnot getting the call to turn on.
update:
i shut off emergency switch for a few hours. then turned back on. it turned on and sent heat worked like this for a few hours now pipes are cold and thermostat wires are jumped so its at a cnstant call for heat. ill get model number sorry for the delay.
#6
02-03-09, 05:12 PM
I'm tending to think that perhaps for one reason or another your system has 'locked out' on safety. There are several safety controls... 'blocked vent', 'flame roll out', etc...
I believe the reason that nothing happened when you jumped the contacts is because there was ALREADY a call for heat. The circulator was running, but the burner was not firing.
If you did the same jumping AFTER you turned the thermostats all the way down, you might see a different result, but if the burner is locking out, you have a different issue.
Also, do you only have one thermostat that is wired to the boiler? or do you have zone valves and multiple thermostats?
I believe the reason that nothing happened when you jumped the contacts is because there was ALREADY a call for heat. The circulator was running, but the burner was not firing.
If you did the same jumping AFTER you turned the thermostats all the way down, you might see a different result, but if the burner is locking out, you have a different issue.
Also, do you only have one thermostat that is wired to the boiler? or do you have zone valves and multiple thermostats?
#8
02-03-09, 05:57 PM
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Sounds like....
Sounds like the union that connects his circ pump to the circ pump motor may be loose or disconnected, causing the boiler to be off because of no flow thru the flow switch.
#9
02-03-09, 06:08 PM
It does sound like a safety kicking out. Dont keep resetting it by doin that main power switch trick though.. could end up burning the place down !
Might as well remove that T-T jumper also, so as you dont forget about it later.. you've proven its not the tstat or wiring there.
Is there any kind of pressure gauge on the system ? Could it have a safety lock-out for low pressure ?
Might as well remove that T-T jumper also, so as you dont forget about it later.. you've proven its not the tstat or wiring there.
Is there any kind of pressure gauge on the system ? Could it have a safety lock-out for low pressure ?
#10
02-04-09, 03:45 PM
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the model is burnham model number pvg/scg p/n 8140701r1
the gauge i see has red and blue on it red 71 blue 11
Also when i went down there to get the numbers off the boiler it was on and starting to pump hot water again.
thanks for all the replies guys.
the gauge i see has red and blue on it red 71 blue 11
Also when i went down there to get the numbers off the boiler it was on and starting to pump hot water again.
thanks for all the replies guys.
#11
02-04-09, 04:02 PM
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Could be at the high limit and not pumping.
What is the system pressure and boiler temperature? (on the gauge on the boiler.)
What is the system pressure and boiler temperature? (on the gauge on the boiler.)
#12
02-04-09, 06:03 PM
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Originally Posted by radioconnection
Could be at the high limit and not pumping.
What is the system pressure and boiler temperature? (on the gauge on the boiler.)
What is the system pressure and boiler temperature? (on the gauge on the boiler.)
the gauge i see has red and blue on it red reads 71 blue reads 11
#14
02-04-09, 08:15 PM
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#15
02-04-09, 09:29 PM
Seems confusing.. if that gauge is in celsius, and the boiler is actually at 160f.. yet earlier you said that you drained some from the boiler drain and it wasnt hot. Maybe that 71 isnt the temperature ? Is it an actual gauge movement, and not an index pointer etc ?
#16
02-05-09, 05:01 AM
The more I think about it, the more I think my assumption of the "71" being the temperature in C.. just doesnt make sense. Why would they sell a boiler in the Boston area that uses C values ? Heck, mine in the land of C here uses F.
#17
02-05-09, 09:44 AM
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Originally Posted by DaveC72
The more I think about it, the more I think my assumption of the "71" being the temperature in C.. just doesnt make sense. Why would they sell a boiler in the Boston area that uses C values ? Heck, mine in the land of C here uses F.
are you guys ready for the answer as to what happen..
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Turns out that the roll out safety switch was bad. i had a licensed plumber come out and look at it as i was stumped. he tested voltage on conectors and all was well. then he went and tested the roll out sensor and it had no connection to complete the loop. so then he reset things as i did before and it turned on. and he did this a few times and there was nothing wrong with the way that the flame ignited and was not doing anything like a roll out he said. He said he has seen it were the sensors just go bad and after inspecting things thats what it looks like. i went and bought the new sensor and installed it. then i watched the flame my self and it did not roll out i watched it for about an hour and it turned on a few times and no signs of any flames rolling out.
Thank you guys for all your help on this its very much appreciated.
Paul
#18
02-05-09, 03:57 PM
are you guys ready for the answer as to what happen..
Glad he got ya fixed up and yer all warm and toasty again...
Good Luck!
#19
02-06-09, 11:48 AM
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you were all in the green on post 6 i should of read it clearer. thanks again for all the help guys
