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Posted by Jim Dandy on February 27, 2009, 4:47 pm
>I am wondering if my heat pump's second-stage heat is not turning on
> during its defrost cycle.
> Tempstar XL 5300 Heat Pump, installed new 5-07. Installation
> instructions 331823-701 (Oct 2005)
> Trane Air Handler, installed new in attic about 1999.
> I know that during very cold weather the second-stage heat works
> because I can feel the hotter air at the registers and see the Em.
> Heat icon on the thermostat.
> As I read the Installation Instructions, it says:
> "Defrost cycle is pre-set for 90 minutes." [but can be 30/60/90].
> and
> "Defrost Mode is identical to Cooling Mode except that outdoor-fan
> motor stops and second-stage heat is turned on to continue warming
> conditioned space."
> The defrost cycle seems to have a 'normal' setting of 10 minutes,
> which seems kind of long to blow cold air when you need warm.
> I'm not sure if this occurred during its first winter or not, but its
> definitely happening now in its 2nd winter.
> Could this be an improper setting which can be changed..or something
> else? I'd like to troubleshoot this as much as possible before I call
> the installer because he's kind of a jerk and tries to talk his way
> out of having to come out for anything.
> Thanks
> Brian
Call a Tempstar dealer and have their service persons come out and check it
over. They can make sure it is operating as designed and make any needed
repairs or adjustments.
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> during its defrost cycle.
> Tempstar XL 5300 Heat Pump, installed new 5-07. Installation
> instructions 331823-701 (Oct 2005)
> Trane Air Handler, installed new in attic about 1999.
> I know that during very cold weather the second-stage heat works
> because I can feel the hotter air at the registers and see the Em.
> Heat icon on the thermostat.
> As I read the Installation Instructions, it says:
> "Defrost cycle is pre-set for 90 minutes." [but can be 30/60/90].
> and
> "Defrost Mode is identical to Cooling Mode except that outdoor-fan
> motor stops and second-stage heat is turned on to continue warming
> conditioned space."
> The defrost cycle seems to have a 'normal' setting of 10 minutes,
> which seems kind of long to blow cold air when you need warm.
> I'm not sure if this occurred during its first winter or not, but its
> definitely happening now in its 2nd winter.
> Could this be an improper setting which can be changed..or something
> else? I'd like to troubleshoot this as much as possible before I call
> the installer because he's kind of a jerk and tries to talk his way
> out of having to come out for anything.
> Thanks
> Brian