Ask Experts Questions for FREE Help !
Ask
    RuthieMck's Avatar
    RuthieMck Posts: 1, Reputation: 1
    New Member
     
    #1

    Oct 27, 2008, 07:10 PM
    Furnace Cycles Too Often
    We recently replaced our old thermostat with a new Noma 5+1+1 thermostat. The furnace used to come on and run for a while, bringing the temperature to 1 degree higher than it was set for. Now it is set for 20.0 C and it comes on at 19.2 and goes off at 19.6. it doesn't even bring the temperature to what we have it set for. It runs for 2-3 minutes, shuts off and then comes back on again in 3-5 minutes and does the same thing over and over. What can we do to remedy this situation, if anything. Thank you for any input you may have

    Ruthiemck
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Oct 27, 2008, 11:50 PM
    A new Honeywell or White Rodgers would have been a much better thermostat choice but since you have the Noma read the install papers that came with the thermostat and in the setup section there should be a selection for what type of a system you have. Change selection or increase the anticipator circuit and the problem should go away.
    ksdallas's Avatar
    ksdallas Posts: 4, Reputation: 1
    New Member
     
    #3

    Jan 22, 2011, 10:21 PM
    I had the same problem with my new Honeywell. I adjusted the Cycles Per Hour from a 9 (default setting for my furnace) to a 4 (optional setting) and it solved the problem instantly. Your manual should tell you how to easily make the adjustment. Some thermostats also have Temp Lag, which can be adjusted to come on/off based on the temperature actually dropping how many ever degrees you set it to. My thermostat does not offer that, though.

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Furnace Gives Heat but Cycles Frequently [ 16 Answers ]

OK, Labman and others proved very helpful in the past with my ignitor problem so now I have another question: How long should a proper furnace run between cycles? I have read about the flame sensors and "limit switches" but I'm not sure if this is related to either. My heater seems to go...

Intertherm Furnace Cycles Off and On [ 8 Answers ]

Have a Intertherm furnace in my mobile home that is about 10 years old and has worked fine until last year. It will cycle the blower off and on a couple times during the warming cycle until it reaches a certain temp in the house. If it is above a certain temp in the house it runs fine and works...

Short Furnace Running Cycles [ 7 Answers ]

My furnace only runs for 15-30 seconds at a time. It will kick off and then fire up 2 minutes later for about another 30-40 seconds. The desired temperature is maintained but the very short on and off cycles are very annoying. We were told it may be our thermostat so we installed a new one and we...

Furnace heat cycles on/off [ 1 Answers ]

We have an old furnace,not quite sure how old.It is a Bryant Quietair.I noticed tonight the burners would light,stay lit for a few seconds(30-40secs.),then go out,and then relight a few seconds later.The fan is running throughout the whole process like it should.This goes on constantly.What is...

Furnace cycles evry two minutes [ 5 Answers ]

I have a 15 year old 70000 BTU high efficiency gas furnace, and it is cycling every 2-3 min and the house is COLD (about 10 degrees lower than comfortable) The small exhaust fan comes on, the igniter turns on, the pilot turns on, the pilot sensor heats up and then the main gas goes on and burns,...


View more questions Search