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Hope you still have your ebrows there Karl. How are things these days at the big E

I have inherited an old set of Books from Carrier "Fundamentals of Refrigeration" it appears to be a home study course that came with slides ,(yes slides for you youngsters google it,it was our power...

Centrifugal switch on the ventor motor ,roll out switch ,or high limit could be the reason for no power to the module. As to not lighting sometimes the spark generated by the module is incorrect and...

The fan control is not run throught the Honeywell w 973 panel. It is a seperate 24 volt circuit.

If it has a switching subbase the contacts will be # 9-10 on the subbase it will be connected to C...

Usually small evaporators use fractional horsepower psc motors. When you reduce the HP by changing the taps you are not reducing the input voltage.
Get out your ohm meter and ohm out a PSC motor...

As mrhavacmechanic stated look into the ICM control , make sure it is set for the type of bearings you have in the motor.
All that will happen ,is a sleeve bearing will go to full speed for a brief...

THe simulator is the best option for servicing the w-973 panel.

http://www.handsdownsoftware.com/Downloads.htm


By taking the entering conditions and the leaving conditions ,using the psychrometric chart you should be able to graph the ADP ,which is just your...

Try running 2nd stage as first stage and see what your readings are . It may point you towards an an airflow issue.

They used to have this on their website ,but now I am unable to find it ,If I google it it takes me to US motors and they say it will be up and running soon.
Is it still available ? I find it very...

Corner ground !!!
That is the first explanation of this voltage reading that make some sense.
Have had some older buildings that you read your meter and have to take a second look because you do...

What kind of system is it on? Is there dampers that open or close causing a reduction in static pressure ?

http://www.journalofcommerce.com/article/id33548

This article may be of interest to ,instead of using the well water you may be able to extract the heat from the sewage pond. Trane has developed...

That is the reason why DRIP legs are installed to trap any dirt or oil in the piping. As Rieck-Tech2 said somebody got carried away with the cutting oil when he was threading pipe.

In some older parts of the city used to see the same issue with water in gas lines. This was due to the line pressure being below below 7" w.c. and piping buried below ground to meet code. If you...

There was a link for piping for ice rinks posted a while ago. I have lost the link and was wondering if anybody remembers what it was. Any help would be appreciated.

In Canada the rules regarding purging with HCFC are very clear you can not. As what was also pointed out the cost of r-22 and if you are brazing you should be purging with nitrogen. You should have...

1,1-Difluoroethane is an organofluorine compound with the chemical formula C2H4F2. This colorless gas is used as a refrigerant, where it is often listed as R-152a or HFC-152a. As an alternative to...

152-A main component is Ethane and I would be more concerned with an contacting an open flame than ODP(which is zero). Google it and read the warnings

These valves are non adjustable,be carefull because if you remove the cap you will lose your charge. Unfortunately they do not warn you anywhere in the units

Do not rule out the reversing valve just because of age of unit.
When unit was running did you measure the temperatures of the suction line entering and exiting the reversing valve? If you have a...

Have seen a condensor that the water froze inside.The end result was that the water froze expanded and the condensor required replacing as it had zero water flow.

Have you been able to varify airflow across the burner?
You may have a air pressure switch that is not set correctly and causing you problems.

With DSI controls there is a lock -out if flame is not sensed after a very short time( 2.5 seconds ) period. I can not be changed as it is a safety control.
Think about what would happen if the gas...

Canadian gas code requires combustion air for the appliance.That is the purpose of the duct.There should a grill in the supply air that supplies air into the room that the furnace is in. There is...