HVACopediaHTP · Boiler · Heating
Outdoor reset and warm weather shutoff
What happens, in order
- Outdoor sensor reads outside temperature
- Control sets the heating set point from the curve between min and max outdoor/supply points
- Lowering the CH set point shifts the curve down
- If the outdoor temperature exceeds the warm weather setting the boiler is disabled
- If the outdoor sensor fails (and function 21 is on) the control ignores reset and uses the programmed temperature
Timings and thresholds
| Item | Value |
|---|---|
| Warm weather shutoff | 68 F default |
| Min outdoor / max supply | 5 F / 190 F default |
| Max outdoor / min supply | 68 F / 95 F default |
Codes you may see during this
Applies to: EL-80, EL-110, EL-150, EL-220, EL-299, EL-399 (N/LP)
More HTP boiler sequences
- Ignition retries and lockout · Ignition
- Central heat call · Heating
- Indirect water heater call · Domestic hot water
- Pump service mode · Pump/purge
- Standby and over-temperature protection · Standby/shutdown
- Cascade operation · Other
Related
Take it to the job
Sequences of operation, error codes and tips work offline in the HVACopedia app.
Source: Elite EL-80 N Installation Manual (LP-293), p. 55, p. 56, p. 60, p. 67. Written in our own words; timings can differ by model and software version, so check the manual for your exact unit.
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.