Abnormally High Discharge Temperature / Refrigerant or THOD Sensor Fault

What does E36 mean?

The compressor discharge temperature is abnormally high, possibly due to insufficient refrigerant charge or a defective compressor discharge temperature sensor (THOD). High discharge temperatures can lead to compressor damage.

• Compressor discharge temperature sensor (THOD) fault.
• Abnormally high temperature detected at the compressor discharge.
• Low refrigerant charge or liquid slugging.
• Sensor wiring integrity issue.

Click steps to track your progress.

1. 1

   Measure the resistance of the THOD sensor at its leads — compare to a resistance-temperature chart if available.

2. 2

   Measure discharge pressure and temperature at the compressor outlet using manifold gauges and a temperature probe.

3. 3

   Perform a leak detection test and verify refrigerant charge level — recover, evacuate, and recharge if low.

4. 4

   Inspect the THOD sensor's connector on the outdoor unit PCB for secure seating and damage.