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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