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Hi All, My first post. Thanks much to the admins for making this site possible. I live in a remote area where service is difficult. Thanks again. I have an FHP(Bosch) Aquarius II Geo thermal System, Model # AP071-1HZC, S/N 3540-103-TW0001-T111M40287. Controlled by a 4 zone Honeywell HZ432. My question is this. Can the 432 fail by commanding the damper to open when it should be closing? Or would this be a damper failure? Can it be wired incorrectly?
The zone in question has a wire inserted in M4, which apparently is not correct?
Any help appreciated. Just starting on this journey.