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H3 Cargo Compartment A/C inop in Auto Cool


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We have a plane that has the H3 a/c pack and it goes full hot in auto. I can control it in manual. I ahve changed the Anti-ice vlv, the Water Seperator Sock, the Anticipator Stat, The Temp control box and followed the FI. All the wiring is ohming good, but I still have the problem. I was wondering if anybody here could help. The plane is an 85 model.

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It started working with the APU. But when we ran engines it drove full hot. So we started to close the bleeds with only two bleeds open it would maintain warm not balls to the wall hot. So we changed the flow control and SOV and it fixed it, but only after we changed the turbine, Temp control vlv C/P and the anticaptor stat anti-ice vlv. So what it boils down to is the flow control vlv fixed it it was weird but a learning experience. Thanks to all who replied it helped.

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