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Rheem Furnace Error Codes

Rheem Error Code What this means
Error Code 10 There's a one-hour lockout in place.
Error Code 11 The ignition failed.
Error Code 12 Low flame detected.
Error Code 13 The flame was lost.
Error Code 14 There was an unexpected flame.
Error Code 20 There was a twinning fault.
Error Code 22 Problem with high limit.
Error Code 26 Reversal of line and neutral.
Error Code 33 Roll-out switch problem.
Error Codes 55 & 57 Pressure switch issue.
Error Codes 58 & 59 Water or condensation problem.
Error Code 61 Problem with the blower.
Error Code 93 Problem with the control.
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