Had a Ultra-Aire 98h installed last spring (2021) for shoulder season dehumidification. Worked great through spring, fall, winter, and this last spring. It has sat off most of/all of the summer, but as things are finally starting to cool a little it’s starting to run some.
It doesn’t seem to be dehumidifying much/at all. Here’s some info:
-dedicated return for dehu, supply goes into air handler supply plenum
-run by ecobee thermostat, set to keep at 50% (house is set at 78 during day and 72 at night, AC handles humidity just fine when it runs)
-unit fan and compressor kick on and off when thermostat tells them to
-clean/new air filter
-condenser and coils are definitely working,visual and infrared thermometer checked
-three distinct lines of Ice build-up at top, middle, and bottom of coils, defrost cycle maybe working? Heard compressor kick off, good amount of water through drain line, ice was definitely less, then compressor kicked back on
*I’ve got a calibrated temp/humidity sensor on one of the supply registers - used that sensor to track info for the last 1+ year. Would routinely see it pumping out dry warm air on sensor, now it’s slightly warm air with humidity not much below room/house humidity
Not sure how to troubleshoot this. Can call company who installed it, but I don’t now that they have much experience with these units other than installing them. Don’t want to do any DIY just not sure where to start. Any help would be appreciated.
It doesn’t seem to be dehumidifying much/at all. Here’s some info:
-dedicated return for dehu, supply goes into air handler supply plenum
-run by ecobee thermostat, set to keep at 50% (house is set at 78 during day and 72 at night, AC handles humidity just fine when it runs)
-unit fan and compressor kick on and off when thermostat tells them to
-clean/new air filter
-condenser and coils are definitely working,visual and infrared thermometer checked
-three distinct lines of Ice build-up at top, middle, and bottom of coils, defrost cycle maybe working? Heard compressor kick off, good amount of water through drain line, ice was definitely less, then compressor kicked back on
*I’ve got a calibrated temp/humidity sensor on one of the supply registers - used that sensor to track info for the last 1+ year. Would routinely see it pumping out dry warm air on sensor, now it’s slightly warm air with humidity not much below room/house humidity
Not sure how to troubleshoot this. Can call company who installed it, but I don’t now that they have much experience with these units other than installing them. Don’t want to do any DIY just not sure where to start. Any help would be appreciated.
source https://hvac-talk.com/vbb/threads/2242301-Ultra-Aire-98h-Dehumidifier-Not-Dehumidifying?goto=newpost
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