29 Liquid Injection Valve Error (Pretrip) (Check Alarm)

Thermo King Alarm Code

Description	Corrective Action
Liquid Injection 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 “Injection 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 the circuit wiring in plug J11 for continuity using a high quality multimeter and a wiring diagram.