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700/900 MCC relay replacement 900

posted by  bcg on  Thu Aug 25 09:00 CST 2022
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last visit: Sun Jul 27 08:12 CST 2014
[RELATED]

All,
i had a bad relay in my mcc-ac 94 940. resoldering the joints didn't fix the problem.

in the faq 900 series mcc-ac-malfunctioning writeup by randy duke, he mentions a relay replacement if the joint resoldering doesn't work.

he references a replacement relay, z2570-nd, from digikey. it is obsolete, nla. https://www.brickboard.com/FAQ/700-900/HeatingAirConditioning.htm#MCCClimateControlACNotWorking

after matching the specs, i found an equivalent replacement relay for z2570-nd and replaced the original, bad relay.

i purchased a replacement relay from alibaba, china:
model qyt73-009dc-hs
"relay 9V SPST Rating Load 10AMP 250 VAC 10A 30VDC DIP-4 0.36W Alternative To SRD Household Appliances PCB Board T73 Relay"

https://www.alibaba.com/product-detail/relay-9V-SPST-Rating-Load-10AMP_1600186189206.html?spm=a2756.order-detail-ta-bn-b.0.0.ef522fc2crubSX#

i'm not inclined to purchase things from china or alibaba, but sometimes they are the only source and always cheap. 12ยข each, plus a few dollars shipping, with about 3 weeks delivery.

i bought 2, with one as a spare. the ac is working normally, now.

regards,
byron golden





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