30 Bypass (Warm Gas) Valve Error (Check Alarm)

Thermo King Alarm Code

Description	Corrective Action
Bypass (Warm Gas) Valve Error (Pretrip) (Check Alarm) Occurs during Function or Pretrip (PTI) test only. Indicates: ~Faulty bypass valve or circuit	Energize and de-energize the bypass valve using “Bypass Valve” in the Controller Manual Function Test submenu. Confirm by sound that the valve energizes and de-energizes. If the valve does not operate, check the valve coil for continuity using a high quality multimeter. Check circuit wiring in plug J11 for continuity using a high quality multimeter and a wiring diagram.