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lintaccumulation or dirtinside theburner o r burner p orts,
attheairinletbetween theburner a ndmanifold pipe,or
obstructions overtheburner o rifice.
Usea softbrush or vacuum tocleantheaffected areas.
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 in the 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
Normal operation:
No callfor heat
Normaloperation:
Call for heat
System lockout:
Failedto detect
or sustain flame
Pressure switch
open orC!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 second s _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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