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How to Maintain and Troubleshoot Electronic Expansion Valves in Thermotec Inverter Units

Guidance on maintaining and troubleshooting electronic expansion valves in Thermotec Inverter heat pump systems.

Electronic expansion valves (DPF(TS1)3.0C-01 and DPF(TS1)3.2C-01) regulate refrigerant flow in Thermotec Inverter TRI 34kw systems. If you experience irregular cooling or heating performance, inspect the valve for blockages, electrical faults, or mechanical wear. Verify the valve's electrical connections and control signals from the PC1004 controller or fan speed regulation module. Clean or replace filters (Φ12.9-Φ12.9(Φ28) T2Y2) to prevent debris from affecting valve operation. Proper valve function ensures efficient heat exchange and system stability.