Rheem GHE80ES/THE80ES GHE100ES/THE100ES Error 8

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

Error code8

Fan pressure switch tripped three times during burn state with 15-second intervals between retries. The manual's first action is: “A08 Proof of Fan err Check air flow for obstructions PRESS HELP”

Model
Rheem GHE80ES/THE80ES GHE100ES/THE100ES
Display shows
8
Type
Error code
Source
Manual p. 32

What 8 means

Proof of fan pressure switch tripped 3+3+3 times in burn state in a single heat call. There is 15 seconds between each 3 retries. For PoF errors in other states please refer to A25,A26 p. 32

Common causes

  • Proof of fan pressure switch tripped 3+3+3 times in burn state in a single heat call. There is 15 seconds between each 3 retries. For PoF errors in other states please refer to A25,A26 p. 32

What to do

  1. A08 Proof of Fan err Check air flow for obstructions PRESS HELP p. 32

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

If 8 is still not resolved

  • A08 Proof of Fan err Check air flow for obstructions PRESS HELP p. 32
    “A08 Proof of Fan err Check air flow for obstructions PRESS HELP”

This page summarises what the manufacturer’s manual says about 8; 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.