this is the continuing saga of trying to get my new HVAC system (Lennox G61V, 5-ton XC21, 3 zone Arzel, 3 Lennox signature stats) working properly.
The latest tweak by the contractor was to designed to enable the signature stats to control the dehumidification mode on the furnace (this mode enables slower fan speeds to better dehumidy the house). Based on wiring diagrams sent by Arzel, the plan was to use the stat on the first floor to control dehumification.
doing this caused a problem--the condenser unit no longer runs in first stage--it is always on second stage, even when only a single zone is calling for first stage cooling. as can be expected, this has increased short cycling on the system (already a problem) and has had, if anything, a negative effect on RH.
any idea why first stage cooling no longer works???
configuring this system has been a nerverending story...
thanks in advance!