P00181
Carrier Transicold
Warning

Check SV4 Valve

Failure in the circuit of solenoid valve SV4 (Hot Gas/Bypass Valve).

Possible causes

  • Defective SV4 coil
  • Open circuit in harness
  • Power supply issue from controller

Recommended actions

  • Verify SV4 coil ohms
  • Check for 12V when activated
  • Replace solenoid as necessary

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