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Table 8 – LED Error Code Description*
LED INDICATION
ERROR CODE
DESCRIPTION
ON Normal Operation
OFF Hardware Failure
1Flash{ Evaporator Fan On/Off Delay Modified
2Flashes Limit Switch Fault
3Flashes Flame Sense Fault
4Flashes 4 Consecutive Limit Switch F aults
5Flashes Ignition Lockout Fault
6Flashes I nduced---Draft M otor Fault
7Flashes Rollout Switch Fault
8Flashes Internal Control Fault
9Flashes Software Lockout
LEGEND
LED --- L ight Emitting Diode
* A 3---second pause exists between LED error code flashes. If
more than one error code exists, all applicable codes will be
displayed in numerical sequence.
{ Indicates a code that is not an error. The unit will continue to
operate when this code is displayed.
IMPORTANT : Refer to Troubleshooting Table 13 and
Table 14 for additional information.
Orifice Replacement
This unit uses orifice type LH32RFnnn (where nnn
indicates orifice reference size). When replacing unit
orifices, order the necessary parts via RCD. See Table 10
for available orifice sizes. See Table 11 and Table 12 for
orifice sizes for Natural Gas and LP fuel usage at various
ele vations above sea level.
Check that each replacement orifice is tight at its threads
into the manifold pipe and that orifice projection does not
exceed maximum value. See Fig. 32.
Single Stage
2 Stage
C08210
Fig. 37 -- Gas Valves
580J