Join Date: Mar 2017
Location: Ojibwe Gichigami
Liked: 2775 times
Ya, monitoring the fan motor operation itself might be impractical since there is no tachometer built into those.
So if we can make it so the fan relay energizes by default (and turns the light on to warn ya that there's an error?) if the sensor wire gets unplugged, we probably solve one of the more important faults that Honda failed to account for. I think we can do that pretty easily right now... Do you want it to do anything else?
So far we have a very basic but far superior fan control unit design that is very inexpensive, very sensitive and fully adjustable for:
1) Operating oil temp range extremes. We control both the ceiling and the floor, fan kick-on/kick-off temp points, independently of each other using trimpots.
2) We control the overall width of the operating temp range. AND we can shift that width up/down. As the oil sensor ages and decays, we can follow that decay with a trimpot, extending the life of the system while retaining sensitivity. All Hondas can benefit from that feature, especially the really old ones.
Nuther question for ya on how to mount the fan motor relay(s)... should we use external relay(s) (Bosch type, 12v automotive?) to allow for easier replacement, or should we mount relay(s) inside the enclosure permanently?