ReplyWe found the NSB zone alarm sensor. Its located on top of the chiller unit. As soon as we bypassed the sensor the machine ran fine. Just answering myself to document for future use.
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NSB Zone Temp Alarm Trane Chiller
Trane Model # SXHFC7540700A58D6011 SERIAL # C05H07896
Need help troubleshooting a NSB Zone Temp Alarm. Chiller will run for short time then shuts down on this fault. Does anyone know where the sensor is actually located. 3 techs looked for it for several hours and we were unable to locate the sensor. The diagrams says it remotely located. It is a two wire sensor.
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We found the NSB zone alarm sensor. Its located on top of the chiller unit. As soon as we bypassed the sensor the machine ran fine. Just answering myself to document for future use.
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