Back to HVAC HeroManual Database

Rheem Renaissance Error A48

Discharge Temp Sensor Fault

What it means

Discharge thermistor input is open, shorted, or implausible.

Diagnostic Step 1

Measure thermistor resistance and compare reading to ambient/discharge conditions.

⚠️ Always disconnect power before servicing.

Need the full wiring diagram?

Step 1 is just the start. HVAC Hero reads the full Rheem manual for you.

Free 7-day trial. No credit card required for demo.