HVACopediaRheem · Furnace
HP Heat-pump heat running (dual fuel)
What the display is showing
In a dual-fuel setup (communicating condenser with reversing valve) the furnace display shows HP while the heat pump is providing the heat. Normal. Gas heat takes over below the balance point set at the thermostat.
Applies to: Rheem/Ruud RGPE / RGLE modulating furnaces
Settings for these units
Filter sizes as shipped, upflow (Table 19) · RGPE/RGLE
| Cabinet width | Input | Bottom filter | Side filter | Quantity |
|---|---|---|---|---|
| 17-1/2 in. | 50, 75 (000 Btu/h) | 15-3/4 x 25 in. | 15-3/4 x 25 in. | 1 |
| 21 in. | 75, 100 (000 Btu/h) | 19-1/4 x 25 in. | 15-3/4 x 25 in. | 1 |
| 24-1/2 in. | 125 (000 Btu/h) | 22-3/4 x 25 in. | 15-3/4 x 25 in. | 1 |
Use one filter location only - do not double-filter or filter the supply side.
21 in./100K: cut 3-1/2 in. off filter and frame for a side filter; 24-1/2 in./125K: cut 7 in.
Reduced clearance to combustibles (Fig. 3 and 4) · RGPE/RGLE
| Model size | Cabinet width (A) | Left side | Right side | Back | Top | Front | Vent |
|---|---|---|---|---|---|---|---|
| RGPE upflow/horizontal 05 | 17-1/2 in. | 0 in. | 3 in. (note 2) | 0 in. | 1 in. | 3 in. | 6 in. (note 3) |
| RGPE upflow/horizontal 07(A) | 17-1/2 in. | 0 in. | 3 in. (note 2) | 0 in. | 1 in. | 3 in. | 6 in. (note 3) |
| RGPE upflow/horizontal 07(B), 10 | 21 in. | 0 in. | 0 | 0 in. | 1 in. | 3 in. | 6 in. (note 3) |
| RGPE upflow/horizontal 12 | 24-1/2 in. | 0 in. | 0 | 0 in. | 1 in. | 3 in. | 6 in. (note 3) |
| RGLE downflow 07(A) | 17-1/2 in. | 0 in. | 3 in. (note 2) | 0 in. | 1 in. | 3 in. | 6 in. (note 3) |
| RGLE downflow 07(B), 10 | 21 in. | 0 in. | 0 | 0 in. | 1 in. | 3 in. | 6 in. (note 3) |
| RGLE downflow 12 | 24-1/2 in. | 0 in. | 0 | 0 in. | 1 in. | 3 in. | 6 in. (note 3) |
Note 2: right side may be 0 in. with type B vent.
Note 3: vent clearance may be 1 in. with type B vent.
Models that show this code
22 models in RGPE/RGLE, R96V/96MDV
Other codes on the same units
- Fault recall - last 5 Power-up replay of the last five faults
- Fr Fire rate readout (pushbutton status menu)
- H Gas heat on
- Learn button Learn button - RX LED rapid blink test
- RX LED blinking Green RX LED - network traffic present
- SEARCHING Thermostat start-up message - searching
- SETUP menu Furnace user menu - SETUP
- STAT LED double blink Red STAT LED - two slow blinks at power-up
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Source: RGPE Dual-fuel operation in communicating mode, p.56. Summarized in our own words; check the original manual for your model.
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.