HTP · Boiler

CASCADE MASTER READY Cascade master ready

Normal status Elite EL

What the display is showing

Boiler is the cascade master and the system can accept a heat call. Second line shows system pump state.

Applies to: EL-80, EL-110, EL-150, EL-220, EL-299, EL-399 (N/LP)

Models that show this code

12 models in Elite EL

EL-110 LPEL-110 NEL-150 LPEL-150 NEL-220 LPEL-220 NEL-299 LPEL-299 NEL-399 LPEL-399 NEL-80 LPEL-80 N

Other codes on the same units

F11 False flame signal
F13 Fan speed error
F20 Condensate full
F31 Program error
CASCADE NO FOLLOWER Cascade - no follower
CASCADE NO SENSOR Cascade - no system sensor
DHW Temperature blocking - DHW demand
FL Low water flow

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Source: Elite EL-80 N Installation Manual (LP-293), p. 63. 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.