Question about Heating & Cooling
Why would my heat pump central air blow cold then just start blowing warm on later afternoons when temps around 90 degrees f? I should add, that when we turn on the heat, it doesn't turn off when the set temp is reached. We have to turn it off manually. This is a used unit (not too old), recently installed by our landlord's friends, who install ac, but don't work on them.
Lennox Elite Series
outside unit M/N 10HPB30-9P
inside unit M/N CB29M-31-1P
The unit not turning off in heating mode sounds like a problem with the thermostat or the wiring to it. The other part really needs more information. Does the unit just stop cooling, or does it go into heating mode? If you turn it off for awhile, does it start cooling again when you turn it back on? Are you able to see the condensate water that comes off of it? If so does a lot come out after it has been turned off for a while? Is your filter clean? There are various things that could be wrong. If it is an old Lennox, they were full of problems, but the newer ones are much better. The biggest problem may be that it was installed by someone who can't work on it.
Posted on Jun 09, 2017
Sounds to me like you have wiring issues. Need to make sure all your connections are tight, wires are clean and free of bare spots (possibly from rodents chewing them)and your settings on your tstat are correct. Heat pump with back up electric heat.
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Posted on Jun 09, 2017
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Posted on Jan 02, 2017
Sounds like you have dirty condenser coils. Remove the upper shroud and check the condenser for clean. Take a water hose and gently spray out the coils paying special attention not to bend the coils over with too much pressure. This will allow more air movement through the coils and give you better cooling efficiency.
Hope this helps,
Posted on Jun 29, 2009
SOURCE: unit not blowing cold air
you have a slow leak in your refrigerant and need to find the leak. you will have to get an AC repairman to come to your house and check it for leaks and fix the problem.
Posted on Jul 28, 2009
Check your indoor unit. your problem is there. you will be able to see where the leak is coming from then I would be able to help you more
Posted on May 22, 2010
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