Allied Air Enterprises 4PGE manual Burners, Typical Flame Appearance, Outdoor Coil, Fault Codes

Burners

Light the burners and allow to operate for a few minutes to establish normal burning conditions. Observe the burner flames. Compare this observation to Figure 10 on page 14 to determine if proper flame adjustment is present. Flame should be predominantly blue in color and strong in appearance. Check that all burners are lit, and that the flame does not impinge on the sides of the heat exchanger.

Distorted flame or yellow tipping of the natural gas burner flame, or long yellow tips on propane, may be caused by lint accumulation or dirt inside the burner or burner ports, at the air inlet between the burner and manifold pipe, or obstructions over the burner orifice.

Use a soft brush or vacuum to clean the affected 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 inspect vent 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

LED	Flashing	Fault
Status	Rate	Description
Slow Flash	One flash	Normal operation:
	per second	No call for heat
Fast Flash	Two flashes	Normal operation:
	per second	Call for heat
	Two flashes	System lockout:
2 Flash	in second with	Failed to detect
	1-second pause	or sustain flame
	Three flashes in	Pressure switch
3 Flash	1.5 seconds with
		open or closed
	1-second pause
	Four flashes in	High limit or
4 Flash	2 seconds with	rollout switch
	1-second pause	open
	Five flashes in	Flame sensed
5 Flash	2.5 seconds with	and gas valve
	1-second pause	not energized
		Internal failure:
Steady	--	Micro-controller
		failure; self-check

Table 5

Page 14 Issue 1008 506488-01