Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 01-18-2011, 11:57 AM   #1
Newbie
 
Join Date: Jan 2011
Posts: 11
Rewards Points: 10
Default

Burner always stops at LOW setting on L8124L


My oil boiler used the Honeywell L8124L control.
The setting are HI=180 LOW=130 DIFF=10. Some how the burner just stops when boiler temp reaches 130. If I change the LOW to 140/150, again the burner just stops when boiler temp reaches 140/150. I change the HI to 190,200 and even at 240, nothing changed at all, it can never go pass the LOW setting. Basically it just works off the LOW setting ONLY.
When thermostat is ON, the circulator is ON and the the cycle is
much much shorter because the boiler temp drops much quicker than when thermostat is OFF but again the burner stops when boiler temp reaches the LOW setting.
How many sensing bulbs does this control have? I was thinking about the
HIGH sensing bulb goes bad but it's not right if the control has only
one sensing bulb because the LOW temp seems to work fine.
PLEASE HELP.

I should add these to clarify the problem
This burner had been working fine with these settings 180HI 130LOW 10DIFF for the last 6 years which is when thermostat is off, the burner just stops at low setting and when thermostat is on( calls for heat ), the burner will stop at hi setting.
For the last few days I do not know why it does not go pass the low setting anymore when the thermostat calls for heat. I know the thermostat is working because the circulator is on and I still do have heat.
My question is why doesn't it get to the hi setting as it used to be anymore when thermostat calls for heat?
How many sensing bulbs does this L8124L control have? Can I buy just the sensing bulb itself or it comes as the set with the L8124L control only?
Any help is greatly appreciated. Thanks.


Last edited by pleasehelpmike; 01-19-2011 at 10:24 AM.
pleasehelpmike is offline   Reply With Quote
Old 01-18-2011, 07:24 PM   #2
Member
 
Join Date: Oct 2009
Location: Nebraska
Posts: 2,362
Rewards Points: 1,000
Default

Burner always stops at LOW setting on L8124L


High is the limit, don't turn it up unless you want water all over when the pressure relief valve pops open. With low set on 130 with a 10 degree diff then the burner should come on when the water temp hits 120 and shut off when it hits 130.

Marty S. is offline   Reply With Quote
Old 01-19-2011, 08:22 AM   #3
Newbie
 
Join Date: Jan 2011
Posts: 11
Rewards Points: 10
Default

Burner always stops at LOW setting on L8124L


I should add these to clarify the problem
This burner had been working fine with these settings 180HI 130LOW 10DIFF for the last 6 years which is when thermostat is off, the burner just stops at low setting and when thermostat is on( calls for heat ), the burner will stop at hi setting.
For the last few days I do not know why it does not go pass the low setting anymore when the thermostat calls for heat. I know the thermostat is working because the circulator is on and I still do have heat.
My question is why doesn't it get to the hi setting as it used to be anymore when thermostat calls for heat?
How many sensing bulbs does this L8124L control have? Can I buy just the sensing bulb itself or it comes as the set with the L8124L control only?
Any help is greatly appreciated. Thanks.

Last edited by pleasehelpmike; 01-19-2011 at 10:22 AM.
pleasehelpmike is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
monitor heater repair help speakers3 HVAC 14 08-18-2013 02:52 PM
Older Carrier Pilot Burner Problem cliffkot HVAC 23 04-29-2011 05:58 PM
furnace burner problem brent h HVAC 2 01-11-2010 07:50 PM
Broken Burner Fix mikelbeck HVAC 2 01-16-2009 09:05 PM
Question about gas burner design darsunt HVAC 4 12-14-2008 01:37 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.