28
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 Induced--- Draft Motor Fault
7Flashes Rollout Switch Fault
8Flashes Internal Control Fault
9Flashes Software Lockout
LEGEND
LED --- L i g h t E m i t t i n g D i o d e
* 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 co de 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 Carrier 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 elevations 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. 35.
Single Stage
2 Stage
C08210
Fig. 39 -- Gas Valves
48LC
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