I came across this site on my continuing saga with a Fujitsu heat pump (ASU15RLQ). It began with a storm, power outage, surge that blew the fuse in the outside unit. After replacing that, further investigation showed a blown fuse and varistor on the inside control board. Since the unit was still under warranty, I contacted the installer for repair. I was more than stunned to find out it would cost $1,000 to repair the unit. Labor isn't covered.
I searched google looking for a replacement tnr10v271K varistor and could only find it available in lots of 1,000 from China. I contacted a local distributor who would not deal with me as I wasn't a licensed HVAC person. I contacted Fujitsu service asking if I could get the part from them. They replied it was covered under warranty but they could not send it to me. Some warranty.
With my very limited electronics background, I looked at the data sheet for the tnr 10v271k and plugged the info into a online parts finder. It came up with a littlefuse v175la5p. So I order a few of those from arrow electronics.
After installing the new varistor and fuse I put it all back together. When I turned on the circuit breaker I heard a pop. Taking it apart again, I see that the replacement varistor burned up.
This leaves me wondering if my ignorance led me to choose a unacceptable replacement part. I would greatly appreciate someone looking at the following data sheets and let me know what they think.
http://www.datasheetdir.com/TNR10V271K+download original part
http://www.alldatasheet.com/datasheet-pdf/pdf/122789/LITTELFUSE/V175LA5P.html
The great resources listed in the faq led me to this potential replacement.
http://www.bourns.com/data/global/pdfs/MOV10D.pdf
Thanks for the help.
I searched google looking for a replacement tnr10v271K varistor and could only find it available in lots of 1,000 from China. I contacted a local distributor who would not deal with me as I wasn't a licensed HVAC person. I contacted Fujitsu service asking if I could get the part from them. They replied it was covered under warranty but they could not send it to me. Some warranty.
With my very limited electronics background, I looked at the data sheet for the tnr 10v271k and plugged the info into a online parts finder. It came up with a littlefuse v175la5p. So I order a few of those from arrow electronics.
After installing the new varistor and fuse I put it all back together. When I turned on the circuit breaker I heard a pop. Taking it apart again, I see that the replacement varistor burned up.
This leaves me wondering if my ignorance led me to choose a unacceptable replacement part. I would greatly appreciate someone looking at the following data sheets and let me know what they think.
http://www.datasheetdir.com/TNR10V271K+download original part
http://www.alldatasheet.com/datasheet-pdf/pdf/122789/LITTELFUSE/V175LA5P.html
The great resources listed in the faq led me to this potential replacement.
http://www.bourns.com/data/global/pdfs/MOV10D.pdf
Thanks for the help.