I have a Prestige 2.0 IAQ THX9421R5005 (2 Years old) and I find that it "losses its mind" from time to time. First sign is that it shuts completely down unexpectedly. Only fix provided by Honeywell is to reset to defaults and then reprogram. Just had to do it again today - UGH! Has anyone having similar troubles? Suggested fixes?
Other than the issue above it is a great unit! I just wish Honeywell would be more forthcoming as to how the control algorithms actually work, particularly when it comes to cycle per hour. Has anyone got a good reference?
Other than the issue above it is a great unit! I just wish Honeywell would be more forthcoming as to how the control algorithms actually work, particularly when it comes to cycle per hour. Has anyone got a good reference?