chuck_pietro
- Aug 8, 2017
- 3
- Joined
- Aug 8, 2017
- Messages
- 3
Hi,
I have a GE Zoneline PTAC HVAC unit Model AZ61H09DACW1. I was told unit did not produce the normal amount of heat. I found a fuse blown on one of three heating elements. I replaced the heating element and the fuse and it works fine now. My question is: I measured the resistance of the new heating elements and they are all within nominal range 100-200 ohms (depending on the element). The defective element had a resistance of 4700 ohms and I understand that these types of elements will increase their resistance over time due to corrosion or cracking. But why would it blow the fuse? I was taught a higher resistance would draw less current, not more.
Before replacing the element, I tried replacing just the fuse and, BAM, the fuse blew again. What am I missing?
Thanks.
I have a GE Zoneline PTAC HVAC unit Model AZ61H09DACW1. I was told unit did not produce the normal amount of heat. I found a fuse blown on one of three heating elements. I replaced the heating element and the fuse and it works fine now. My question is: I measured the resistance of the new heating elements and they are all within nominal range 100-200 ohms (depending on the element). The defective element had a resistance of 4700 ohms and I understand that these types of elements will increase their resistance over time due to corrosion or cracking. But why would it blow the fuse? I was taught a higher resistance would draw less current, not more.
Before replacing the element, I tried replacing just the fuse and, BAM, the fuse blew again. What am I missing?
Thanks.