HVACopediaRheem heat pump error codes
37 codes with causes and test steps, plus 1 settings tables.
| Code | Meaning | Severity |
|---|---|---|
| 01 | Long run time (compressor) | Medium |
| 1 flash (L terminal) | L-terminal fault output: Long run cycle or low pressure | Medium |
| 02 | High side fault (compressor limit opened 4 times) | High |
| 2 flashes (L terminal) | L-terminal fault output: High pressure control trip | High |
| 03 | Short cycling | Medium |
| 3 flashes (L terminal) | L-terminal fault output: Unit short cycling | Medium |
| 4 flashes (L terminal) | L-terminal fault output: Locked rotor | High |
| 05 | Open circuit - compressor will not run | High |
| 5 flashes (L terminal) | L-terminal fault output: Compressor will not run, open circuit | High |
| 06 | Compressor open start circuit | High |
| 6 flashes (L terminal) | L-terminal fault output: Open start circuit | High |
| 07 | Compressor open run circuit | High |
| 7 flashes (L terminal) | L-terminal fault output: Open run circuit | High |
| 8 flashes (L terminal) | L-terminal fault output: Control mis-operation | High |
| 09 | Low secondary (control) voltage | Medium |
| 9 flashes (L terminal) | L-terminal fault output: Low control voltage | Medium |
| 21 | Low pressure control (LPC) open | Medium |
| 27 | Low line voltage or no line voltage | Medium |
| 28 | High line voltage | Medium |
| 29 | High pressure control (HPC) open | High |
| 30 | ICC fuse open | Medium |
| 80 | Low airflow | Medium |
| 83 | Condenser coil temperature sensor fault | Medium |
| 84 | Outdoor ambient temperature sensor fault | Low |
| 90 | Communication fault | Medium |
| 93 | Internal control fault | High |
| d1 | No shared data | Medium |
| d3 | Airflow CFM mismatch | Medium |
| d4 | Memory card invalid for device | Medium |
| d8 | Old shared data | Low |
| L4 | Locked rotor lockout | High |
| L6 | Open start circuit lockout | High |
| L7 | Open run circuit lockout | High |
| L21 | Low pressure control lockout | High |
| L29 | High pressure control lockout | High |
| Flashing c / C / h / H | Anti-short-cycle (3 min) or minimum-run (30 s) timer active | Low |
| P | Compressor protector trip | High |
Settings and specs
Outdoor unit clearances
Clearances · Rheem/Ruud PRL-JEC heat pump (Comfort Control2 ICC)
| Location | Minimum |
|---|---|
| Above unit (fan discharge) | 60 in. [1524 mm] |
| Coil air inlets (3 sides) | 6 in. [152 mm] |
| Service access side | 24 in. [610 mm] |
| Between two units (grille sides aligned) | 12 in. total (6 in. per unit) |
- Do not reduce the 60 in. discharge or 24 in. service clearances.
- Inlet clearances under 6 in. reduce capacity and efficiency.
- Cabinet: 33 in. high, 44-3/4 in. long, 31-1/2 in. wide (all sizes).
Source: Rheem/Ruud (-)PRL-JEC Installation Instructions 92-20522-63-06, Figure 1 and 3.3-3.4, PDF p.9 (printed p.6); PDF p.11 (printed p.8)
Models covered
RPRL-024JECRPRL-036JECRPRL-048JECRPRL-060JEC
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.