P00169
Carrier Transicold
Warning

Check Economizer Circuit

A problem was detected in the operation of the economizer circuit.

Possible causes

  • Failed electronic expansion valve (EXV)
  • Leak in the heat exchanger
  • Coil resistance out of range

Recommended actions

  • Perform EXV stepper motor test
  • Check economizer inlet/outlet pressures
  • Inspect economizer valve harness

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