Wiring Diagram - Rheem 96v series Installation Instructions Manual

CHECK:
AIRFLOW - ensure no restrictions, such as dirty filter, blower wheel,
dampers or closed registers, Etc. exist.
LIMITS - ensure good wire and connections between I.F.C. and all limits.
makes sure limits are not open when circulating air temperature is within a
specific range.
ROLLOUTS - Ensure rollouts or overtemperature limits do not need to be
reset. make sure no flame rollout in burner compartment due to blocked flue
or heat exchanger or combustion restriction.
OVERFIRE - ensure furnace is not overfired (temp rise is above stated
range). Check gas valve, proper orifice size, gas presure
Remove the 2nd stage heat call while low heat call
remains. Ensure 24 VAC to W1 & 0 VAC to W2
After Blower on delay, Does IDM switch to low speed
and remain at low speed after switching?
Does I. B. M. energize at low speed?
Does furnace continue to operate at low
fire until T-stat satisfied or heat call
removed?
Remove heat call by setting
T-stat below room temp.
Does IDM Shut off after post purge?
Does I. B. M. shut off after 90 seconds? (plus slew)
Remove power to furnace, open blower compartment
and restore dip switches to original settings. Replace
blower door. Restore power to unit.
Check to make sure test mode dip switches are properly set.
Ensure T-stat not
switching to high fire or
test mode not timing out
(1 hour limit)
Double check - is heat call
completely off at IFC?
Fault code displayed?
See FAULT CODES under
troubelshooting in the I & O Manual
REPEAT THIS SEQUENCE UNTIL TROUBLE- FREE OPERATION
CHECK:
-Grounding on I.F.C. in place and continuity between screw and field
-installed ground.
-Flame sense rod clean (clean if nessessary).
-Wire continunity between flame sense rod and Pin P2-7 on I.F.C.
-Flame carries across all burners, and all burners stay lit.
CHECK:
- Fault codes at IFC SSD - see FAULT CODES under troubleshooting
in I&O manual.
- 24V Between IFC pins P2-5 & P2-4 of I.F.C.
- Make sure heat call present at T-stat.
- T-stat wires and connections
- Check wire and all connections between I.F.C.and I.D.M
- Check for 115 VAC on P3-1 & P3-3.
- Check I.D.M. capacitor.
- Check I.D.M. low speed. Replace if neccessary.
- Check all connections between IFC and ECM motor.
- Check 24V to ECM Motor. (low voltage connector, pins 1 & 4)
- Check P.F.C. Choke.
- Check all wiring and connections to P.F.C. choke.
- Check fault code display and see "fault codes" In I & O.
** System will attempt to light 4 times. Voltage Is present at gas valve for
only 7 seconds during each ignition trial. System will enter a 1 hour
lockout after 4 attempts.
ST-A1194-52-01
PROBLEM PERSISTS
C
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