Rheem GHE80ES/THE80ES GHE100ES/THE100ES Error 24: Blocked flue switch during Pre purge

Gas water heater · taken from the manufacturer’s manual, pages cited

Error code24

The flue switch is blocked during pre-purge. The manual's first action is: “A24 Pressure Switch Check wiring To pressure switch”

Model
Rheem GHE80ES/THE80ES GHE100ES/THE100ES
Display shows
Blocked flue switch during Pre purge (24)
Type
Error code
Source
Manual p. 32

What 24 means

Blocked flue switch during Pre purge p. 32

Common causes

  • Blocked flue switch during Pre purge p. 32

What to do

  1. A24 Pressure Switch Check wiring To pressure switch p. 32

Before you service the product, read the safety instructions in the manual p. 4.

If 24 is still not resolved

  • A24 Pressure Switch Check wiring To pressure switch p. 32
    “A24 Pressure Switch Check wiring To pressure switch”
Open the manual at page 32 All GHE80ES/THE80ES GHE100ES/THE100ES error codes Manual details & download

This page summarises what the manufacturer’s manual says about 24; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Rheem. Found a mistake? Report an error.