For my NTI Ti200, original controller went blank with full fan throttle.
120v was available and if you peel each corner to reveal the 4 black #1 Phillips screws, remove the cover and test the fuse. If good, the controller has failed. If blown, the primary circulator may be the cause. You may need to drill 4 additional holes for mounting.
Zach
NY
7 months ago
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