Question about Honeywell L4064B2236 Fan/Limit Control Heater

2 Answers

Blower will not turn on when a/c compressor comes on - tstat ok fuses ok

Furnace and ac use same blower. Turned furnace off a couple weeks ago as weather permitted. went to turn on a.c, and compressor outside comes on - blower doesn't. When I manually turn limit fan switch, blower comes on, and air is cold, but doesn't stay on. WHen I let off, it turns off.

Posted by p2pcoach on

Ad

2 Answers

Anonymous

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 2 Answers

You should have a fan relay on your furnace that would control your fan in air conditioning and that sounds like you are needing

Posted on Nov 12, 2009

Ad

Anonymous

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 70 Answers

Probaly low on freon will not turn on when low

Posted on Oct 05, 2009

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

If I shut off the blower on my gas furnace do I have to shut down the whole furnace


Turn of the system at the thermostat. If you turn off the blower, assuming you mean at the tstat, there's no need to turn off the pilot. If blower is running and won't stop, even if turned off at tstat, turn off power by any means necessary, and pilot does not need to be turned off. A "standing pilot" is made to stay lit at all times, running or not.

Mar 07, 2017 | Heating & Cooling

1 Answer

2003 Toyota Corolla AC Blower/Fan will not turn on, I replaced the Blower/Fan a few weeks ago,


A/c compressor works fine and the blower motor works and shutdown right? it is the problem with the blower resistor or with blower motor relay. try to direct the resistor irrespective of the speed. hope the problem may be solved.

Jun 05, 2014 | 2003 Toyota Corolla

1 Answer

Honeywell RTH2300 says Heat On, but furnace isn't running.


Your tstat is not the problem. I've not yet worked on an oil furnace. I'm way down south. But either way, if your tstat was calling for heat(heat on), and you pushed a reset at the furnace, more than likely that reset is a safety. OK to reset, but now what ever that safety is preventing from happening, has failed and can not be reset until repaired. The reset should be an automatically opening switch upon unsafe operation. And manually closed to "reset" the safety. That safety is connected to something that is not working properly. Hope this helps!

Mar 02, 2017 | Honeywell prgrammable thermostat RTH2300B

1 Answer

Goodman furnace GMT115-5B Turn fan to on on


Bypass the tstat first but that's where I'd be leaning.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Aug 14, 2017 | Goodman GMS90703BXA Heater

1 Answer

A/c stopped cooling a couple of weeks ago and now the blowers have stopped working too What could be the problem,all fuses are ok.


For the ac to stop working either the compressor clutch is not getting power or the gas is too low so the low pressure switch has switched the compressor off to stop sucking in air through the leak. The blower is controlled by the fan switch which is a 3 positional switch that has a resistor for each position. These resistors have a habit of burning out so the fan will not work. The resistors are in a block located in the blower housing. So you have two faults to fix.

Aug 31, 2013 | Mitsubishi Colt Cars & Trucks

1 Answer

Tempstar DC90 willnot shut off


I can't stand the tempstar smart valve! Now I'm not sure what a dc90, but if you have a gas fire residential furnace I know what it is. The smart valve controls gas and flame proving only. The blower issue is probably one of the high temp safeties that has stuck. During a call for heat, your system verifies that all safeties are closed. If this sequence is not correct, then the unit assumes that the unit has overheated due to a high temperature safety issue, and brings the blower on to cool it down, normally for 90secs. Also if the unit is calling for heat when the power is turned off, still calling for heat when power is turned back on(like you said by throwing the switch), this will also bring the blower on for 90sec, then blower will/should turn off, and the heat cycle will start. So if your tstat is calling for heat(heat on and set temp higher than accrual temp), and you turn off power then turn power(main voltage) back on, this will bring blower on for 90secs. Now, the burners staying on is a different issue. I've not seen that in 15 yrs of service on a smart valve. There is probably 24volts feeding the "W" circuit, for some reason. On the control board there is a terminal block with R W G Y C. The W is your heat. This W receives a 24v signal from your tstat. Turn off power, remove W from the board, then turn power back on. If no heat then you've isolated your problem to the control wire coming from your tstat, or the tstat itself. If it continues to heat with W disconnected then its something in the furnace, circuit board? Hope this helps!

Mar 04, 2017 | Null Heating & Cooling

1 Answer

If I turn the ac off the blower shuts off. The compressor and the motor continues to run. I have 24v on the contactor. I disconnected one of the wires and the contactor was not welded shut, because the...


Sounds like a bad tstat. Not likely anything inside the furnace. If you have a digital tstat try just removing the screen and see if units shut down. If both do you know a relay in the tstat is bad.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Sep 15, 2017 | Carrier 38CKC024 Air Conditioner

1 Answer

I have a Carrier 58SX060 Furnace with air. I turned the thermostat to heat and the exhaust comes on and runs and the pilot comes on but the burner never light s and the blower never comes on. If I turn the...


carrier gas furnaces will try to light three times then will usually go on a lockout for one hour you can bypass the lock out by resetting the power, turn furnace on, remove wires from gas valve, you will need a multi meter to check for voltage to valve, if control board sends a call to the gas valve the valve is bad, if voltage is never present during the lighting cycle your control board is bad

Sep 30, 2009 | Heating & Cooling

1 Answer

Inside blower not starting every time


You have a voltage bleed somewhere or a short, whatever you want to call it. Do you have a control board on this unit where the relays are integrated into it or do you have the old type where the relay is separate? Anyway, you need to take a meter and take voltage readings to the motor when it's acting up and when it's running right. I have had the same problem with a Goodman unit before and it turned out to be the tstat! What I would do is remove the cover off the tstat and take a small jumper wire and touch the r terminal to the y terminal. If the motor starts right up, you know it's the tstat. If you have the same problem, then the only thing it can be is a low voltage short to the unit from the tstat, bad control board if you have one, or a bad relay. But if the unit is working fine in heat, it's probably not the relay. I hope this helps.

Apr 08, 2009 | Goodman Heating & Cooling

Not finding what you are looking for?
Honeywell L4064B2236 Fan/Limit Control Heater Logo

1,079 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heating & Cooling Experts

Paul Carew

Level 3 Expert

3534 Answers

Cindy Wells

Level 3 Expert

6238 Answers

Marvin
Marvin

Level 3 Expert

85239 Answers

Are you a Honeywell Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...