HEAT PUMP

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12-20-00, 11:33 AM

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HELLO,

I HAVE A YORK HEAT PUMP , MY PROBLEM IS THIS: WHEN THE HEAT PUMP IS RUNNING IN THE HEAT MODE AND THE OUTSIDE TEMPERATURE IS BELOW 40 DEGREES ( F )IT RUNS FOR A SHORT PERIOD OF TIME THEN TURNS OFF PRIOR TO THE THERMOSATAT SETTING BEING SATISFIED, THE AIR HANDLER CONTINUES TO RUN .
IF AT THAT POINT THE HEAT PUMP IS TURNED OFF AND BACK ON AT THE THERMOSTAT THE HEAT PUMP WILL AGAIN RESTART BUT WILL NOT RUN UNTIL THE THERMOSTAT SETTING IS REACH . MY HEATING CONTRACTOR HAS INVESTIGATED THIS PROBLEM AND CAN NOT FIND A MALFUNCTION . WHAT IS THE PROBLEM ?

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12-20-00, 02:40 PM

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How old is your unit??

York units in the late 80's had a board in the outdoor unit.There were three settings if I remember right.These were used to bring on the AUX heat at different out side temps.A thermister in the outdoor controlled it's operation.Don't quote me on this.I believe the temps were set at 37,34 and and 31.By moving that single wire to that certain terminal you could bring on the electrical heat at a higher temp or lower temp...Are you still getting heat from your unit when the temp is below 40?If so the terminal should be switched to the lowest outside ambient temp..If memory serves me that thermister also kept AUX heat,emergency heat from coming on if outside temp was above this setting if the compresor went into a "LOCKED OUT" condition.At that time it would relay a signal to your tstat.The light would come on,indicate such at which time you could switch to AUX heat.PDF.When you turn your tstat off then on the board in your out door unit is going thru a check out,it senses your complete system,decides what you want and cycles the outdoor unit accordingly.PDF

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12-20-00, 02:47 PM

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THE UNIT IS EIGHT YEARS OLD . YES, HEAT IS BEING DELIVERED WITH THE TEMP. BELOW 40 DEGREES. THE HEAT STRIPS HAVE BEEN DISCONNECTED . I WILL CHECK THE BOARD AS YOU SUGGEST.
THANKS

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Gas and Oil Home Heating Furnaces
Comparing Costs for Gas v. Electric

on Dec 20, 2000

I am planning to renovate an old bungalow, and I need to consider the question of heating, both house heat and water heat. The question I have goes something like this: Which is the most efficient source of energy to heat my home--natural gas, lp gas, or electric? Please don't supply the answers wind- or solar-generated electric. These are not viable options for us. I guess the answer to that question is tough, because the unit costs for each make a comparison apples to oranges. So electric is supplied in kW/h and lp gas is supplied in gallons. so here is how I would restate my question: Given that the formula for determining heating efficiency is based on how much it would cost to heat an equivalent amount of water to an equivalent temp for an equivalent amount of time (say 50 gal to 120 deg F for 24 hours), assuming you use the currently most efficient models of boilers for each energy source, what is currently the cheapest supply of energy for water heating? I am focusing on water heating because I plan to install a water-based radiant floor heating system. I realize these numbers vary depending on the unit costs for energy in my area, so a formula would probably be the most useful form of answer. If you don't know the answer, but you can direct me to a place where I might get one, that would be great. Thanks, boojieboy
Gas and Oil Home Heating Furnaces
HEAT PUMP

on Dec 20, 2000

HELLO I HAVE A BRYAN HEAT PUMP AND OUR THERMOSTAT IS CONSTANTLY ON 65 DEGREES WE TURN UP THE HEAT TO AROUND 80 DEGREES AND IT STAYS THERE.IT IS BLOWING COOL AIR FROM THE VENTS AND IT IS FREEZING IN MY HOME. I CLEANED WHERE THE HEATING COILS ARE WITH THE VACUUM AND NOTHING HAPPENED. YOU CAN HEAR THE FAN BLOWING BUT THE AIR IS COLD WHAT ELSE CAN WE DO?