Question about Heating & Cooling

22 Answers

14 years old Vulcan gas ducted heating, always have a problem of gas pressure switch, I had to replace(by myself)every 10-12 months, last one only lasted for only 45 days, what is the problem and how can be rectified.

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  • sales237 Jul 07, 2010

    14 years old Vulcan gas ducted heating, always have a problem of gas pressure switch, I had to replace(by myself)every 10-12 months, last one only lasted for only 45 days, what is the problem and how can be rectified.

    The power is steady & stable

  • sales237 Jul 15, 2010

    Thank you very much

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22 Answers

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How often have you serviced the gas burners in the unit during the 14 years?

I am assuming the problem you are having is the pressure switch cuts in and turns off the heater.

How do you know the pressure switch is the problem and not the heater itself? The switch can also cut in if the temperature of the furnace is more than safe levels. This can happen if either there is not enough air moving through the system (fan is sluggish or return air duct is choked) or the burner is not effective and causes carbon to collect.

If the unit is being serviced regularly then it could be the quality of the pressure switch that is the problem especially in case you may not be using genuine parts.

Posted on Jul 12, 2010

  • sales237 Jul 12, 2010

    You may be right, The unit have not been serviced for a long time, But howI know it is from the pressre switch, the lock out system on the control board indicates it the Gas Pressure Switch and once replaced the unit works perfectly. Thank you

  • Sam Jul 13, 2010

    I had already responded on this to you. Not sure what feedback you got from other fixya consultants as I cannot see those responses on my views of this problem. The heater working ok temporarily after you replace pressure switch could be that you might be cleaning parts of the heater when you open it etc.



    So my suggestion would be to service the whole unit including the burners, ducts and the fan and see how long the pressure switch takes to cut in again.

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If normally the pressure switch goes of every 10 to 12 months and a new switch goes of in 45 days the probability of the new switch being substandard is very likely. If the source of the switch is trusted then it is advicable for you to get a proffessional to check the wiring to the switch as there might be a short circuit along the line. Hope this is helpful.

Posted on Jul 13, 2010

  • Rockme
    Rockme Jul 13, 2010

    If normally the pressure switch goes of every 10 to 12 months and a new
    switch goes of in 45 days the probability of the new switch being
    substandard is very likely.
    If the source of the switch is trusted then it is advicable for you
    to get a proffessional to check the wiring to the switch as there might
    be a short circuit along the line.
    Hope this is helpful.


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  • 825 Answers

Definitely other brand spares will not work properly with this brand... Better buy a branded spare if available...

Posted on Jul 13, 2010

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If possible,purchase a filter screen ,the gas lines may have contaminates in the pipes,like rust,this is getting into the pressure valve,and destroying it.The valve may be available with a screen,talk to the parts man and find out,I had replaced 4 myself for my mother at her house about 5 years ago,after the third one,I purchased one with a screen in it,and did not have to go back in it for a while,and all I had to do is empty it,the screen that is,then had no more problems.

Posted on Jul 13, 2010

  • 1 more comment 
  • sales237 Jul 13, 2010

    Where did you buy the one with the screen? Thank you

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 13, 2010

    A little hardwear store in Booneville ms,,

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 13, 2010

    I bought the pressure regulator with a screen already in it,any appliance store can get the part,just explain to the clerk,that you need a regulator with a screen in it to catch the debris,or you need a filter screen to go in line .

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I ran across this is a web blog:

I believe its not uncommon across all models for the gas valve to fail. Found this a few years ago after turning it off for the summer (no point running the pilot all summer) only to find it couldn't be turned back on.

Looks like it's just an underdeveloped part. Unless your gas pressure is too high, or some anomaly like that, the part is probably just going bad because of faulty design. Not sure if there is a solution to this, aside from just biting the bullet and replacing it when it fails.

Here's the site the quote came from:
http://forums.whirlpool.net.au/forum-replies-archive.cfm/1181999.html
Will look for more info and get back to this problem.

Posted on Jul 12, 2010

  • sales237 Jul 13, 2010

    Thank you

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14 years old is costing you money for sure. I can tell you - the internal workings of the unit are causing problems with the regulator but you already guessed that much. Right now you can get a government sponsored partial refund and many save 100 a month just on a newer unit that is made to save.
I am not sure of this - try - shutting the gas off if this is all you use it for -0 - shut it off in the summer. Install a new unit -this antique is killing you on price and parts and will never get better.
Thanks
Gary @ Fix Ya

Posted on Jul 12, 2010

  • 2 more comments 
  • sales237 Jul 12, 2010

    I believe you are joking, but thank you any way

  • Gary Rice
    Gary Rice Jul 12, 2010

    All I ask is for this task - you keep me informed via comment as to the eventual solution. I learn new things every day so please don't be mad just keep me in the loop. I have one old unit here and I am going to get it updated before it dies so this will help my too just to read how someone else sees this problems solution.

    Thanks
    Gary @ Fix Ya


  • Gary Rice
    Gary Rice Jul 15, 2010

    Please share what answer satisfied you as I was so far off to make you think I was joking. This is somewhat embarrassing. I do not see what other answers you see from others on here so please just share with me the answer that got 'er done for you.

    Thanks,
    Gary @ Fix Ya


  • Gary Rice
    Gary Rice Jul 29, 2010

    I am so glad you got this sorted out..

    Thanks for choosing Fix Ya

    Gary @ Fix Ya


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Hi,

To be frank, your problem is very unique and uncommon too. Any technician will be able to solve your problem only after personal examination of the gadget. Therfore I advised you to call the technitian and get your gadget serviced or examined...

Thanks...

Posted on Jul 12, 2010

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Pressure switches protect the furnace from firing in case of a plugged flue or inducer motor not working. It your furnace has plastic vent pipes make sure nothing is plugging up the outlet of the pipe. Its kinda rare for a pressure switch to go bad. One way to check it is to remove the vent pipe from the outlet from the furnace. Usually a clamp clamps it to the outlet of the inducer motor. Take it off and try the furnace. If the furnace lights, then its a vent problem. It it still doesn't, check the inducer fan or rubber hose from the inducer fan to the pressure switch. Cobwebs, water, or birds can block a plastic vent. Take a small brush or such and run it down the vent pipes to clean out the vent.

Posted on Jul 12, 2010

  • sales237 Jul 12, 2010

    Sounds good, I will try. Thank you very much

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One problem of gas pressure switch is that when you put in in the air-condition duct, does it leak? Normally if that happens, the pressure is too much to handle for that pressure switch. Another thing is that your equipment is 14 years old. That means wear and tear comes in although the pressure switch is brand new but the other materials worn out easily. You may double check all the parts of it if it still in top condition. Otherwise, you may replace it or purchase a new one..

Posted on Jul 11, 2010

  • sales237 Jul 12, 2010

    It is a gas ducted heating not air conditioning, there is no leak and the problem started when the the system was 2 years old and continuing, the last pressure switch lasted for only 45 days, this when i turned the gas valve 1/3 off. once replaced the system is perfect . Thank you

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In my experience only 3 could cause that:
1 - the gas comes with too much pressure - install a pressure regulator on the pipe that feeds the burner.
2 - the gas itself is dirty - that implies that the pipes carrying it to the burner are severely corroded; highly unlikely, in 10 years the corrosion would have ruptured them by now.
3 - there's something wrong it the electric circuit : here the most likely problem is a failed capacitor, its absence is causing excessive sparking at the contacts that will eventually burn them. Check the entire system, maybe the problem is in the blower.

Posted on Jul 11, 2010

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Hi,
This can be due to a fault with a damaged & corroded low voltage (12V) line shorting out which led to intermittent operation.
As for the gas pressures or low heat output, do the gas nozzles a clean & tightened some loose screws that secure the combustion chambers. I think these could be the possible steps we can take or it may need a tech to come home.

Posted on Jul 11, 2010

  • 4 more comments 
  • sales237 Jul 11, 2010

    Everything work very well for 14 years except the pressure switch. It gets faulty, once replaced, the heater is back to normal again

  • Balakrishnan Computers (A Computer Repair Shop)

    You can visit the below mentioned website:

    http://www.arnoldservice.com/Troubleshoo...

  • Balakrishnan Computers (A Computer Repair Shop)

    Hi,
    This can be due to a fault with a damaged & corroded low voltage (12V) line shorting out which led to intermittent operation.
    As for the gas pressures or low heat output, do the gas nozzles a clean & tightened some loose screws that secure the combustion chambers. I think these could be the possible steps we can take or it may need a tech to come home.

  • Balakrishnan Computers (A Computer Repair Shop)

    Hi,



    The above steps is the only possible steps that I found, if those are not working then I would advise a technician to come to your home and check it.

  • Balakrishnan Computers (A Computer Repair Shop)

    Hi,
    This can be due to a fault with a damaged & corroded low voltage (12V) line shorting out which led to intermittent operation.
    As for the gas pressures or low heat output, do the gas nozzles a clean & tightened some loose screws that secure the combustion chambers. I think these could be the possible steps we can take or it may need a tech to come home.

  • Balakrishnan Computers (A Computer Repair Shop)

    You can visit the below mentioned website:
    http://www.arnoldservice.com/Troubleshoo...

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The regulator may need to be reset for it is putting out too much pressure leading to a short life to the pressure switch

Posted on Jul 10, 2010

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If you could explain the nature of the problem as to what prompted yu to go for a pressure switch replacement it would be of immense help to diagnose the problem.

Posted on Jul 10, 2010

  • sales237 Jul 10, 2010

    The gas ducted heating, does not work & diagnostic test indicates a faulty gas
    pressure switch & I had to replace to get it going. Thank you.

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Hello my name is Heath it will be my pleasure to assist you. The problem is dirt or debris getting to the pressure switch through the gas line rust or anything getting in the pressure switch will cause the switch to fail. What you can and should do is put a drip led in the gas line before the switch its a "T" place in the line with the lower portion of the "T" facing down and a small nipple 4-6 inches long with a cap put on it. That way any rust or dirt will fall into the lower section where the cap is and get trapped there.

Posted on Jul 09, 2010

  • sales237 Jul 10, 2010

    Thank you very much Heath it is a good idea but the pipe diameter is only 3 mm and no space under to get the length for nipple & cap. I believe it is hard to do it in my case

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Please confirm whether the pressure switch is not operating or the contact points gets worn out. Also you may check for gas contamination.

Posted on Jul 09, 2010

  • sales237 Jul 09, 2010

    The pressure switches become faulty in a short period, nothing wrong with contact points. when I change the it with a new switch works OK. How can I check for gas contamination?


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Hi,

The gas pressure switch sold in the store nowadays are substandard one which are not durable. i advice you go for one of the brand listed below.

KOBOLD

UE, est. in 1931

Mamco precision switches.

Also, if this switch are not handled properly it will get damage quickly.

Thanks for contacting Fixya.

Posted on Jul 09, 2010

  • sales237 Jul 09, 2010

    The switches I buy are from Climate Technologies, mane in China, where can I buy the brands you referred to. thank you

  • Rahman Rufai Jul 12, 2010

    Hello,

    This what to do. Remove the pressure switch from the furnace, remove all
    moisture from the switch using a hair dryer and blow into the switch to
    free it from it's contact.

    Test the switch with a multi-meter
    to make sure it proves when you apply a very small amount of vacuum on
    it. It's ok to such on the switch to free it. Reinstall it when you are
    able to free it. Check your air filter while you are in front of the
    unit and clean out all the drain hoses going from the furnace to the
    condensate drain.

    Make sure there is no obstruction in the fresh air and
    exhaust venting pipes.

    Thanks.






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Hello,

The reason your switch did not last is simply because it either was not fixed properly, or the switch is not strong enough to last like others that were installed before it.

Try to replace the switch with a new one and this time ensure it is a stronger one that can last as long as others that was used before it.

Also you can change the pressure gas and the switch.

Take care

Posted on Jul 09, 2010

  • ladipo sarumi
    ladipo sarumi Jul 12, 2010

    Run a check on the whole connection of the pressure gas and the switch.

    The best solution is for you to replace the pressure gas cylinder and the switch and secure it is properly fixed.

    Take care


  • sales237 Jul 12, 2010

    We don't use gas cylinder, it is the natural gas running in pipes to the house. the switch used all the same as the original, I don,t understand what do yu mean by stronger. Thank you

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Get the gas pressure checked the pressure of gas is bit high making the switch go faulty.Adjust the pressure of gas by adjusting the gas valve.If the valve is making more gas release then required the switch will get worn out and it will get faulty.
The gas pressure and the gas valve has to be checked.
thanks.

Posted on Jul 09, 2010

  • sales237 Jul 09, 2010

    The last time I changed the pressure switch, I turned the gas valve down by nearly 1/3 and the switch only lasted for 45 days. any other ideas. Thank you

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A pressure switch should not go bad that fast, you're right. 45 days is not long for a part that should be permanently working.

Even changing it 10 to 12 months at a time tells me there is something wrong.

I would get a multimeter and measure the voltage at the pressure switch with it removed.

I do not know the specification on this, but if you call the manufacturer, I would be sure they would be interested as to why you're blowing the part so frequently.

good luck on this one.

Posted on Jul 08, 2010

  • Duane Wong
    Duane Wong Jul 09, 2010

    If the amps and voltage is stable then maybe the current surges and what not are not the problem.

  • sales237 Jul 09, 2010

    Thank you

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Welcome to FixYa
Sir,
Pressure switches protect the furnace from firing in case of a plugged flue or inducer motor not working. It your furnace has plastic vent pipes make sure nothing is plugging up the outlet of the pipe. Its kinda rare for a pressure switch to go bad. One way to check it is to remove the vent pipe from the outlet from the furnace. Usually a clamp clamps it to the outlet of the inducer motor. Take it off and try the furnace. If the furnace lights, then its a vent problem. It it still doesn't, check the inducer fan or rubber hose from the inducer fan to the pressure switch. Cobwebs, water, or birds can block a plastic vent. Take a small brush or such and run it down the vent pipes to clean out the vent.
Thanks for Contacting FixYa....

Posted on Jul 08, 2010

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Hello,
The problem could be from the control board or the pressure switch, you can follow the below instruction to make your air conditioner to work...
Step 1 – Inspect the Control BoardThe first step is to examine the control board and check if the switch is stuck due to an obstacle in its path. The switch is connected to hoses and the water in these can sometimes cause a little bit of a problem. Check the switch for any kind of a mechanical jam. It is also possible for the switch to get jammed because the switch itself is faulty. While you are inspecting the control board, also check for faulty wiring.
Step 2 – Inspect the Pressure SwitchUse an ohmmeter to check if the pressure switch is opening or closing properly when heat is called for. First, turn the power of the furnace off. Next, take off one of the power hoses and blow on it. Now use the ohmmeter to check whether the pressure switch is functioning properly. **** on the power hose and then check the switch again, using the ohmmeter. Check the secondary exchanger and the inducer and see if the exhaust ports are blocked. Also check for garbage in the condensate trap. Next, check if you can see the plunger between the switch, check if the plunger pulls in when you **** on the vacuum tube.
Step 3 – Repair the Pressure SwitchIf your pressure switch is stuck, it is most likely a problem in the running of the furnace. The plunger may not be pulling in completely and may only bob around when the pressure builds up inside the furnace. Using a cloth, and a wire brush, remove any blockages and dirt from the secondary exchanger and the inducer. Remove the drain tubing and clean it properly by blowing out on it. However, when you are blowing out on the drain tubing, also blow into the secondary exchanger to maintain the pressure. Also adjust the condensation trap so that the water can reach the drain and furnace gases can be trapped.

Hope this helpout....

Posted on Jul 07, 2010

  • Sanyade Akinwale
    Sanyade Akinwale Jul 09, 2010

    Hello,
    having read the solution given, you have to call a skilled personnel to handle it and make it effective.
    Thanks for posting your questions. Good luck.....


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Hello,


The problem could could be a bad power supply or epileptic power supply because when the current is not stable, some device easily cut off or worn out or perhaps, bad.

I would suggest you get a stabilizer or a voltage regulator, plug the unit to the voltage regulator and plug the voltage regulator to the power outlet, this way, if there is any epileptic power supply, the voltage regulator will help stabilize and correct it, with this, your device can last longer.

Take care.

Posted on Jul 07, 2010

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1 Answer

Pilot lights but won't stay on in my older style vulcan space heater. thermo couple was replaced last year.any ideas that i could try thanks


Most common cause of pilot light problems is air movement. If your space heater exhausts gas through the roof, ensure the cap is on and level. If not, outside air movement will blow out the pilot. If you do not have an exhaust gas duct, check that the unit is positioned so that it does not blow air back onto itself from walls, furniture, etc, and ensure no other devices that move air are aimed towards the unit. The unit also needs to be placed away from central ducting, including return vents.

Hope this helps!

Aug 09, 2010 | Vulcan AUW230A Heater

3 Answers

We have a Vulcan Ultra high efficiency gas ducted heating


Gas ducted central heater won't switch on all of a sudden

Nov 04, 2009 | Vulcan AUW230A Heater

1 Answer

Dryer not hot


Tht means that the element is not heating on.

You need to call a technician to test the element, the thermic sensor, and the control assembly.

The most likely is a defective heating element, that must be replaced.

Jan 31, 2009 | Kenmore 73952 Gas Dryer

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