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We have a two pipe low pressure steam heat system. one of our radiators is not working.

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You probably have an airlock condition and need to release the vent to let trapped air escape but be careful when doing this steam can cause severe burns.

Posted on Nov 15, 2008

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2000 GMC Sierra SLE 5.3L overheating replaced the water pump, thermostat, fan clutch, & flushed radiator and its still overheating


here are 8 reasons a vehicle over heats. coolant level is low, you have a leak in cooling system, the cooling system may have trapped air inside, the radiator cooling fan is not working, radiator core has become plugged, bad thermostat, or bad water pump, or Your radiator cap needs to be replaced. Good-Day! this is mostly all problems with over heating. if it is a bad head gasket, you will see white smoke from tail pipe. thats because coolant is entering cylinders. as for the radiator cap have a parts store pressure test the cooling system, if they do it.

May 11, 2014 | GMC 2000 Sierra 1500 SLE

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Make : Weil-McLain Model : CG-5-SPDN Series 12 I have the above mentioned boiler which is located on the 1st level of a three story one family house, the area where the boiler is located is insulated.


You don't have an optimum distribution of steam in your house. Try closing a little bit the valves supplying the heaters in the lower floors. Close a little bit more until you get the desired balance.

Nov 06, 2012 | Air Conditioners

1 Answer

We have a Carrier Infinity 96 furnace in our home, which was installed brand new in our house we built 5 years ago and this thing is a nightmare. We've had the code blinking away and and the technician in...


EACH OF THE FOLLOWING STATUS CODES IS A TWO DIGIT NUMBER WITH THE FIRST DIGIT DETERMINED BY THE
NUMBER OF SHORT FLASHES AND THE SECOND DIGIT BY THE NUMBER OF LONG FLASHES.

43 LOW-HEAT PRESSURE SWITCH OPEN WHILE MEDIUM-HEAT PRESSURE SWITCH IS CLOSED - Check for:

- Low inlet gas pressure (if LGPS used).

- Plugged condensate drain.

- Improper pressure switch wiring.

- Water in vent piping, possible sagging pipe.

- Stuck open low-heat pressure switch.
- Disconnected or obstructed pressure tubing.

Mar 28, 2011 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

My furnace is telling me that i have an open pressure switch via the trouble code on the circut board. its a weatherking furnace jmercadante01@hotmail.com


Hi,
If the pressure switch is open, that means that the inducer is not moving enough air to close it, the pressure switch is bad, or the heat exchanger may be cracked.

Check for air flow...go outside and see if air is coming out the vent pipe....make sure there is no water built up inside the vent pipe.
Make sure the air intake pipe is ope and not clogged if you have a two pipe system...

Check the small hoses by the furnace for cracks or water in the hoses...
Check for condensate buildup inside the heat exchanger...

A cracked heat exchanger can also cause a lack of pressure and or pressure differential....

If everything else checks out then you may have a bad pressure switch... they DO go bad...

Here is a tip that will help you try to figure out why yourfurnace is not working.

BasicFurnace or Heating System Troubleshooting

heatman101

Mar 24, 2011 | Air Conditioners

1 Answer

Fan doesnt work on heat cool ok


Often the fan will cycle on and off on the heat mode. A cold air prevention mode is often built into modern Ac units whereby the indoor fan wont turn on until the internal system pressure is up to a certain point and heat is available to pump into the room. If the system cant come up to pressure or temperature then possibly the system is low on gas. Place your hand on the large pipe leaving the outdoor unit, it should be HOT when the system is on heating mode and running. If not Hot, then it is low on gas.

Feb 24, 2011 | Pace 18HPEWHEC Split System Air...

2 Answers

I have a lot of noise coming from the pipes i have bleed the air valves from the registers and still have the noise


you can not bleed air from a air con system like you can a radiator in your home its against the law the system will need to have the gas removed checked for leaks put on a vacum then recharged bleeding will not work

Jan 21, 2011 | Air Conditioners

1 Answer

The plumbers have installed radiators with the hot pipe on the top right side of the radiator and the return pipe at the bottom right side of the same radiator does this sound correct?


Not normal but should work fine.Since heat rises this will allow the radiator to heat up a little quicker than if introducing the heat at the bottom. If the system ran long enough it would not effect the outcome of heating your home.

Jan 18, 2011 | Air Conditioners

1 Answer

I have steam heat when i turn my heat on i get black dust all over my homeon child toys


Steam heat-- I can appreciate that-- I have done Maintenance work on Steam systems for years-
Most of my systems have big cast iron radiators, and a valve on one end, and a steam trap on the other end of the radiator.
The radiator has to be painted with a silver paint-- or it will rust easily--

Tell me about your radiator, and is there rust?
Is there any leakage at the radiator valve-- like at the stem packing?
Sometimes the water that leaks out of the packing can be black-- (It is iron oxide, too..)

Do any of these comments help your trouble shooting?

Tell me more, so I might be able to help you further.

Mack B

Jan 17, 2011 | Air Conditioners

1 Answer

Old copper with paint, cleaned end, fluxed it, tried to tin it and solder will not stick. Tried three times. I was using my plumbers torch so I don't think heat was a problem. I have only run across this...


Are you trying to solder on a closed piping system? If so one thing that will cause many problems is any moisture in line. It does not take but a drop or so to vaporize to steam and cause oxidation on pipe or fitting which will cause solder not to stick.If you are working on closed piping try to find valve or faucet somewhere to vent steam. I would clean again and make sure you are using good flux and right solder & try again. Hope this helps. Thanks

Nov 09, 2010 | Air Conditioners

1 Answer

Hhow to set the pressuretrol??


Hi,
I assume you are talking about a steam heating system...
There are two screws on the top of the pressuretrol...


turn the pressure screw down to the lowest pressure at which you still get heat to the farthermost radiator...make sure the vents are working...or steam does not flow to displace the air...
Then just give the differential screw enough difference so the boiler cycles on and of a bout three times and hour...when making steam...
That's all there is too it...

heatman101

Oct 08, 2010 | Air Conditioners

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