Ask Experts Questions for FREE Help !
Ask
    Lynn57mi's Avatar
    Lynn57mi Posts: 6, Reputation: 1
    New Member
    		  
    #1

    Feb 22, 2009, 01:46 PM
    Blower cycle
    HELP, I just had the modulator replaced on my furnace and don't know if it is working right. The heat blows through the register for one min. Shuts off for one min. It has been doing this for about an hour to heat the house 3 degrees! That does not seem right to me.:mad:
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #2

    Feb 22, 2009, 02:06 PM
    Modulator? Ignition module? Blower speed-control module? Post brand & model #, if replaced by a pro, give details of work performed from service invoice.
    Lynn57mi's Avatar
    Lynn57mi Posts: 6, Reputation: 1
    New Member
    		  
    #3

    Feb 22, 2009, 02:24 PM
    He called it a modulator... It is a sears furnace. About 15 yrs. Old. Its Honeywell
    Lynn57mi's Avatar
    Lynn57mi Posts: 6, Reputation: 1
    New Member
    		  
    #4

    Feb 22, 2009, 02:26 PM

    We did not get the service invoice yet.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #5

    Feb 22, 2009, 02:30 PM
    Is the air filter clean? If clogged, the unit may be overheating and short-cycling.
    Lynn57mi's Avatar
    Lynn57mi Posts: 6, Reputation: 1
    New Member
    		  
    #6

    Feb 22, 2009, 02:34 PM
    Yes, it is dirty
    Don't have a filter here to replace it. Will have to get one. If I take it out, should it not short cycle? Then go get a new filter if this works?
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #7

    Feb 22, 2009, 02:43 PM
    Yes. Running the system without a filter is better than with a clogged filter. Take it out, but replace it ASAP.
    Lynn57mi's Avatar
    Lynn57mi Posts: 6, Reputation: 1
    New Member
    		  
    #8

    Feb 22, 2009, 02:51 PM
    <<<Lynn DUH, lol
    We took the dirty filter out :) Turned heat up, to see how long the blower runs. Hmmm still short cycling... I really thought this would do the trick. :mad: I am not sure that the modulator(as he called it) was the correct part for our funace. As he had to call the boss to come put it in. I hope they come back and fix the problem. Thanks for helping though. Appreciate your time.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #9

    Feb 22, 2009, 02:53 PM
    Good luck, and share the sequel...
    tk03's Avatar
    tk03 Posts: 33, Reputation: 2
    Junior Member
    		  
    #10

    Feb 22, 2009, 08:13 PM
    I hear many people call the ignition module a modulator. The only way that could cause this is if the thermostat heat anticipator does not match the new control. If he meant something else something must be out of adjustment.
    Lynn57mi's Avatar
    Lynn57mi Posts: 6, Reputation: 1
    New Member
    		  
    #11

    Feb 23, 2009, 08:11 AM
    >Today, the furnace man called it the board... and it was replaced because the furnace was not coming on. It started rapid cycling after he replaced it (or maybe before, and we just did not notice it). Now, he is getting a fan control switch. And maybe another part...
    Like many homeowners I would imagine, this furnace has never had regular maint. So I asked him to clean things up. You would think, that would be the first thing to do, to correct any problems. Wondering how many parts will have to be replaced, as this is a Honeywell with a serial number indicating it is from 1992. Thanks for your input ;)
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 Blower Stops During Heating Cycle [ 1 Answers ]

Hi! You all are my last hope. I have a 13 year old Nordyne furnace. Last week the fan stopped blowing during the heating cycle. It would wait about 15 seconds and then come back on and a slight hot smell would be blown from the registers. I called a repairman and he put on a new fan limit...

No Heat Cycle, Purge blower motor on continuosly [ 1 Answers ]

Hi. I hope someone could help me. I have a York Stellar furnace and I am having a strange problem. The air conditioning has worked well all summer. However, when I turned on the heat the draft inducing purge motor comes on and stays on. The heating cycle does not continue beyond that. ...

Furnace stuck in the BLOWER CYCLE? [ 2 Answers ]

I have an older Reclaimer 80 furnace, it is stuck with the blower on, and the burners or not igniting, is there a way to reset the system? - I have shut power off for a couple hours and it starts back up right were it left off. Also I can't shut it down at the thermostat, that has no effect on the...

Heat pump blower does not cycle off. [ 4 Answers ]

My problem I believe is with the blower control on a heat pump. With the thermostat in COOL or AUTO, the outdoor unit stops as expected when the temperature setpoint is reached. But the blower does not stop running. It continues to run as if it's in a manual run control. If the breaker to...

Craftsman 2 cycle 230 mph leaf blower [ 4 Answers ]

I accidentally used regular Castrol 2 cycle motor oil (instead of craftsman synthetic) and now the engine is seized. What do I have to do to repair the engine? The manual states to only use synthetic so I assume Sears will not repair this unit as it is only 4 months old.

View more questions Search