lintaccumulationordirtinsidetheburnerorburnerports,
attheairinletbetweentheburnerandmanifoldpipe,or
obstructionsovertheburnerorifice.
Useasoftbrushorvacuumtocleantheaffectedareas.
Typical Flame Appearance
Heat
Exchanger
Burner
Gas Burner
Manifold Flame
(Blue Only)
Figure 10
Outdoor Coil
Dirt and debris should not be allowed to accumulate on the
outdoor coil surface or other parts inthe air circuit. Cleaning
should be as often as necessary to keep coil clean. Use a
brush, vacuum cleaner attachment, or other suitable means.
If water is used to clean the coil, be sure the power to unit is
shut off prior to cleaning. Care should be used when
cleaning the coil so that the coil fins are not damaged.
Do not permit the hot condenser air discharge to be
obstructed by overhanging structures or shrubs.
Vent Outlet
Visually inspectvent outlet periodically to make sure there is
no buildup of soot and dirt. If necessary, clean to maintain
adequate opening to discharge flue products.
CONTROL SYSTEM DIAGNOSTICS
Fault Codes
One flash
Slow Flash
per second
Fast Flash Two flashes
pei Second
Two flashes
2 Flash
3 Flash
4 Flash
Normaloperation:
Nocallfor heat
Normaloperation:
Callforheat
System lockout:
Failedto detect
or sustainflame
Pressure switch
openorC!osed
in second with
1-second pause
Three flashes in
1.5 seconds with
1-second pause
Four flashes in
2 seconds with
1-second pause
Five flashes in
2.5 seconds _ith
1-second pause
High limit or
rollout switch
open
Flame sensed
5 Flash and gas valve
not energized
Internal failure:
Steady -- Micro-controller
failure; self-check
Table 5
Page 14 # 48111 B005
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