Rheem 96P series Installation Instructions Manual page 89

TABLE 20
90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS
STATUS: This is a critical fault. The furnace will not operate in gas heat modes but all other modes (e.g. cooling) should
function.
DESCRIPTION: This fault is displayed under the following conditions:
1. When a failed ignition has occurred four times in a row, the control enters one-hour lockout and fault codes "10" and "11" will
be displayed alternately at the seven-segment display. See fault code 11 for a description on expected operation, causes and
solutions for this fault code.
2. after declaring a Water Sensed condition (heating operation is shut down due to this fault) several times consecutively. When
the control enters lockout the fault codes "59" (Water Sensed) and "10" (soft lockout) will be displayed alternately at the seven-
segment display. See fault code 59 for a description on expected operation, causes and solutions for this fault code.
3. While the control has entered a one-hour lockout after declaring a dead blower after the main limit control has been open for
more than 150 seconds, the fault codes "61" (Non-operational blower) and "10" (soft lockout) will be displayed alternately at the
10
seven-segment display. Note: the dead blower fault and associated one-hour lockout will occur up to four times in one heat call.
Upon declaring this fault for the fourth time in one heat call, the control will enter hard lockout requiring manual reset of power to
the furnace. See fault code 61 for a description on expected operation, causes and solutions for this fault code.
4. When IFC is in soft lockout and fault "93" is active, the fault code "93" is to be displayed alternately with the fault code "10" at
the furnace seven-segment display. See fault code 93 for a description on expected operation, causes and solutions for this
fault code.
5. When flame is lost five times in a row, the control enters one-hour lockout and fault codes "10" and "13" will be displayed
alternately at the IFC seven-segment display. See fault code 13 for a description on expected operation, causes and solutions
for this fault code.
6. While the control is in one-hour lockout due to an unexpected flame, the fault codes "14" (unexpected flame) and "10" (soft
lockout) will be displayed alternately at the furnace seven-segment display. See fault code 14 for a description on expected
operation, causes and solutions for this fault code.
ONE-HOUR LOCKOUT
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