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Tempstar 5 Ton Gas Pack will not run when outside temp is below 32 degrees

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4 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 340 Answers

SOURCE: Have Rheem 5 ton heat pump with stacked coils poor cool.

If your sure on the psi your low on freon or your evaporator is restricted discharge psi would realy help.you will get best performance with a clean unit or pay expensive utility bill . Tom

Posted on Jun 18, 2009

james3751
  • 614 Answers

SOURCE: Hello, I have a 1.5 ton rudd ac/heat pump

Your outside unit is not defrosting. You need to call a service tech to check it out. Defrost board sensor or low on gas. Also you amy have an outside tstat that is not working correctly. Rus

Posted on Dec 06, 2009

Testimonial: "thanks for th info before I called service I appreciate your time .sam"

kingbrizzle
  • 407 Answers

SOURCE: air is blowing cold but wont keep up temp

If the system is actually doing everything it can, which I do occasionally run into, then it's time to start looking at other factors like the heat loads. Number one problem I run into is either attic insulation or attic ventilation. One thing that really sticks out in your post though is the square footage and tonnage. Now, to be honest, what the square footage is from the home owner to actual living space always varies. Home owners always get the square footage like a realtor, but includes the garage and other unconditioned rooms. What your looking for is the square footage of only the rooms that have a vent. It is 400cfm per ton, 1 cfm per square foot. So if you have a 2.5 ton system, it is capable of doing 1000 square feet of living space. You said 1500 square feet, which would need a 3.5 to 4 ton system. Hope this helps and gets you to cooler days!

Posted on Jul 02, 2012

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2 Answers

Heater will not activate until outside temp. is above 40 degrees


If you have a heat pump the compressor is locked out below that temp. If you have a dual fuel - hp/gas, the gas burners should come on as would the electric heaters if you have electric heat as backup.

Jan 19, 2016 | Heating & Cooling

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Heat pump not keeping up to set temperature on thermostat but never drops below 63 degrees whens its 20 degrees outside.


It may be getting low on refrigerant due to a small leak. I'd have it serviced soon. When running at less than peak efficiency it will much more often switch on the heat strips and they are not cheap to operate.

Jan 06, 2015 | Heating & Cooling

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Why is my unit unable to cool my house more than 15 degrees below outside temp?


probably a tonnage issue. unless you have 12 inches of insulation in the attic i like to go with 400 sq. ft. per ton in the houston area. our humidity is so high it will not keep a cold enough coil to wring moisture out of air. all a/c systems are designed to operate at 95 degree ambient. when you get to 102 and more the effienecy drops off quick.

Jul 03, 2014 | Amana Heating & Cooling

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Nov 24, 2013 | 2005 Chevrolet Cobalt

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My Goodman CK361D unit blows cold air from the vents and it is cold when you stand there. But it doesnt seem to push it throughout the house. we can run it for hours and it will still be over 70 degrees in...


There are alot of factors when dealing with this problem. Heat Load ( Typical A/C unit is designed with a split of 20 degrees farenheit.) If you measure the temperature leaving the discharge registers, the temperature should be around 20 degrees colder than the air entering the return air grille (Filter Location). Also your unit seems to be a 3 ton; In which this system is designed for roughly 450 sq. ft. per ton and can go as high as 550 sq. ft. on newer homes with more than adequate insulation values. On older homes with minimual insulation the 400- to 450 sq.ft. rule per ton should be observed. Another reason could be that the units needs servicing like a dirty condenser coil or evaporator coil, improper refrigerant charge, etc can all be issues that can result in your problem.
Finally, most typical units or designed to maintain a home 20-25 degrees below outside temperature. Example 95 degrees outside, inside should not be set lower than 70 to 75 degrees, and the 5 degree range depends on the SEER (Seasonal Energy Efficiency Rating/Ratio ) of your unit. Hope I was helpful in giving you some direction in things to look for to resolve your problem.

Jul 05, 2011 | Heating & Cooling

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HEAT PUMP OPERATION FOR TEMPSTAR SMART COMFORT 2400, MODEL THC436AKC1. LOWEST OUTSIDE TEMPERATURE FOR OPERATION?


I have installed many heat pumps and if it is installed without and ouside temperature sensor I would not recommend running it below freezing 32 degrees farenheheit. Running a heat pump at low outside ambient temps. can hurt your compressor and that is the most expensive part of the outside unit.

Dec 20, 2009 | Heating & Cooling

1 Answer

Hello, I have a 1.5 ton rudd ac/heat pump


Your outside unit is not defrosting. You need to call a service tech to check it out. Defrost board sensor or low on gas. Also you amy have an outside tstat that is not working correctly. Rus

Dec 06, 2009 | Ruud UAMB042 Air Conditioner

1 Answer

Problem started all of a sudden on a hot day


have car scanned look at tps minnum should be around .50 at key on or running
also look at ect sensor if possible when ehgine is cold temp on engine should be within 5 degrees of outside temp
hope this helps.

Sep 13, 2009 | 2002 Buick Park Avenue

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