Long run times with HP
I have a Lennox XP16 matched to a CBX27UH A/H. House has three zones. Two downstairs set to 75. Upstairs set to 79. Outside temp is around 90 with high humidity. The settemps are being maintained, however, during most of the day, the system is constantly running. It is very rare that the entire system shuts off during the day.
Question: Is this normal operation for a HP with multiple zones? Is it their function to just maintain the set temp?, or should the system cycle on/off?
Thanks for your assistance.
Can't anyone here provide me with any feedback? Come on guys. I'm looking to you as the experts, please.
Guessing you have a 2 stage system.
Guessing its 2 tons.
You didn't give any size info of your house.
A 2 stage should have long run times in the hotter times of the season.
Have you had it check by your installing contractor.
Alot depends on what type of zone board you have and how it is set up. It could be that you are running in low stage only as each zone calls for cooling and it maintaining the temperature that way. Running on first stage is more for comfort and long run times will remove more humidity.
Its a good Life!
Unit is four tons. Zone board is a Lennox LZP-4. The board is set up to initiate stage 2 based on timed length of call. House is 2245 conditioned space. The X-16 is a two stage compressor.
Its possible that the timer is set too high, and by the time it brings on second stage, one of the zones has gained enough heat, that it can't satisfy all the zones at once, real quick.
Its also possible, that its going to second stage when a zone is calling and the DATS sensor is shutting the OD unit down to prevent liquid flood back to the compressor.
Its also possible, its not going to second stage.
You should call your contractor to check it.