Rheem GHE80ES/THE80ES GHE100ES/THE100ES Error Codes

13 codes from page 32 of the manual

This is the list of error codes the Rheem manual gives for the GHE80ES/THE80ES GHE100ES/THE100ES gas water heater. Find your code below and open it for what the manual says about its causes and what to do.

Error codes from p. 32

CodeWhat it meansPage
1 Three unsuccessful ignition attempts in a row then 1 hour lockout, three more unsuccessful ignition attempts and then 1 hour lockout, three more ignition attempts and then hard lockout. p. 32
2 Three times flame lost during one demand p. 32
3 Overheat stat is open p. 32
6 No pressure in burn state for 3 times. Caused by either intake or exhaust pressure switch trip 3+3+3 times in the same call for heat. There is 15 seconds between each 3 retries. For intake/exhaust pressures switch errors in other states please refer to A23, A24 p. 32
7 3 times reset at 90 volts p. 32
8 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
19 Flame still present 10 sec. after closing the gas valve p. 32
20 Flame detected just before gas valve opened p. 32
23 Blocked flue switch during Post purge p. 32
24 Blocked flue switch during Pre purge p. 32
25 Air flow switch error pre purge p. 32
26 Air flow switch error post purge p. 32
33 Fan deviation more than 300 rpm longer than 1 minute (when fan speed > 4200 rpm this error is ignored) p. 32

Codes and descriptions are taken from the manufacturer’s manual; page numbers link to the PDF. ManualLib is not affiliated with Rheem. Found a mistake? Report an error.