Rheem 97MDV060 Series Installation Instructions Manual page 77

DUAL SEVEN SEGMENT DISPLAY
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 as described above (A-D).
7. 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 as described
above (A-D). 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.
8. While the control is in one-hour lockout due to sensing
an inducer overcurrent condition, the fault codes "34"
(inducer overcurrent) and "10" (soft lockout) will be
displayed alternately at the seven-segment display as
described above (A-D).
9. When the main limit has been open during a gas heat
call for more than 150 seconds and has not yet re-
closed, the fault codes "61" (non-operational blower)
and "22" (open limit) will be displayed alternately as
described above (A-D) until the limit re-closes.
10. When the water level sensor has declared a 1-hr lock-
out 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 lock-
out) will be displayed alternately as described above
(A-D).
11. 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" as described above (A-D).
12. When gas valve is energized, flame is sensed and
IFC detects a fault condition which will not prevent gas
heating operation from continuing (like fault "57",
"12", "66"), IFC will display the operation code "h" or
"H" or "CL" alternately with the active fault code as
described above (A-D).
13. During cold calibration sequence, if the low pressure
switch make (close) RPM is greater than the high
pressure switch make (close) RPM or, if the low pres-
sure switch break (open) RPM is greater than the high
pressure switch break (open) RPM, the high and low
pressure switches are assumed to be mis-wired such
that the high pressure switch is connected to the
wiring for the low pressure switch and vice-versa. In
this case the fault code "45" (Low Pressure Switch
Open, Inducer on High Speed) and "55" is to be dis-
played alternately as described above (A-D).
The fault and mode codes and fault priorities are listed
below. Priority is to be used to determine which fault to
display when two or more faults are present simultane-
ously.
NOTE: Verify display orientation is correct before interpret-
ing fault codes. Otherwise, the fault codes may be upside-
down. If a code is not on this list, the display may be
upside-down.
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