Rheem · Heat pump

L6 Open start circuit lockout

High severity Rheem/Ruud PRL-JEC heat pump (Comfort Control2 ICC)

What the control is telling you

Active protection: start-circuit fault (06) repeated, compressor locked out. Display flashes L then 06 (or 6). Manual reset required.

Applies to: (-)PRL-JEC 2-stage 16 SEER heat pumps: RPRL/UPRL-024JEC, -036JEC, -048JEC, -060JEC

Likely causes

Damaged, wrong or miswired run capacitor
Broken wire or loose connector in the start circuit
Open start winding

Test and repair steps

Check the run capacitor for damage, wrong value or miswiring.
Check for broken wires, loose connectors or a miswired compressor.
Check compressor windings for continuity.
Reset the ICC after the cause is fixed press TEST for 1 second with an insulated probe (preferred), or cycle 24VAC (pull R or C) or cycle line power.

Settings for these units

Outdoor unit clearances · Rheem/Ruud PRL-JEC heat pump (Comfort Control2 ICC)

Save it for the next call

Star this code in the HVACopedia app and keep the whole library on your phone for jobs with no signal.

Open the app

Source: Rheem (-)PRL-JEC Heat Pump Installation Instructions, 12.4 Active Compressor Protection Mode, p.25. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.