40
0.130
0.181
5 CELL
50TM400735
6 CELL
50TM400484
8 CELL
50TM400485
10 CELL
50TM400439
IGNITER AND SENSOR LOCATIONS
(BRACKET HEAT COVER NOT SHOWN FOR CLARITY)
C12092
Fig. 56 -- Spark Adjustment (Siz e 14)
Table13–LEDErrorCodeDescription*
LED INDICATION
ERROR CODE
DESCRIPTION
ON Normal O peration
OFF Hardware Failure
1Flash{ Evaporator Fan On/Off Delay Modified
2Flashes Limit Switch Fault
3Flashes Flame Sense Fault
4Flashes 4 Consecutive Limit Switch Faults
5Flashes Ignition Lockout Fault
6Flashes Induced---Draft Motor Fault
7Flashes Rollout Switch Fault
8Flashes Internal C ontrol 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 code that is not an error. The unit will continue to
operate when this code is d isplayed.
IMPORTANT: Refer t o 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 through RCD. See Table
15 for available orifice sizes. See Table 16 and Table 17
for orifice sizes for Natural Gas and LP fuel usage at
various elevations above sea level.
Ensure each replacement orifice is tight as its threads into
the manifold pipe and the orifice projection does not
exceed maximum value. See Fig. 50.
48HC
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