GCSS96 Installation Manual

38
MEDIA AIR FILTER OR ELECTRONIC AIR CLEANER REMOVAL
Follow the manufacturer’s directions for service.
DIAGNOSTIC CODES
1 flash, then pause System lockout
2 flashes, then pause Pressure switch stuck closed
3 flashes, then pause Pressure switch stuck open
4 flashes, then pause Open limit switch
5 flashes, then pause
Flame has been sensed when no flame
should be present (no call for heat)
6 flashes, then pause Open rollout switch / open control board fuse
7 flashes, then pause Low flame sense signal
8 flashes, then pause Igniter relay fault
Continuous flashing 115 Volt AC power reversed
OFF Control failure
ON Normal operation
The LED will also flash once at power-up.
BURNERS
Visually inspect the burner flames periodically during the heat-
ing season. Turn on the furnace at the thermostat and allow
several minutes for flames to stabilize, since any dislodged dust
will alter the flames normal appearance. Flames should be stable,
quiet, soft, and blue (dust may cause orange tips but they must
not be yellow). They should extend directly outward from the
burners without curling, floating, or lifting off. Flames must not
impinge on the sides of the heat exchanger firing tubes.
INDUCED DRAFT AND CIRCULATOR BLOWERS
The bearings in the induced draft blower and circulator blower
motors are permanently lubricated by the manufacturer. No fur-
ther lubrication is required. Check motor windings for accumu-
lation of dust which may cause overheating. Clean as necessary.
Burner Flame
Figure 41
CONDENSATE TRAP AND DRAIN SYSTEM (QUALIFIED SERVICER
ONLY)
Annually inspect the drain tubes, drain trap, and field-supplied
drain line for proper condensate drainage. Check drain system
for hose connection tightness, blockage, and leaks. Clean or
repair as necessary.
FLAME SENSOR (QUALIFIED SERVICER ONLY)
Under some conditions, the fuel or air supply can create a nearly
invisible coating on the flame sensor. This coating acts as an
insulator causing a drop in the flame sense signal. If the flame
sense signal drops too low the furnace will not sense flame and
will lock out. The flame sensor should be carefully cleaned by a
qualified servicer using emery cloth or steel wool. Following
cleaning, the flame sense signal should be as indicated in the
Specifications Sheet.
FLUE PASSAGES (QUALIFIED SERVICER ONLY)
The heat exchanger flue passageways should be inspected at the
beginning of each heating season.
B EFORE L EAVING AN I NSTALLATION
• Cycle the furnace with the thermostat at least three times.
Verify cooling and fan only operation.
• Review the Owner’s Manual with the homeowner and
discuss proper furnace operation and maintenance.
• Leave literature packet near furnace.
R EPAIR AND R EPLACEMENT P ARTS
• When ordering any of the listed functional parts, be sure
to provide the furnace model, manufacturing, and serial
numbers with the order.
• Although only functional parts are shown in the parts list,
all sheet metal parts, doors, etc. may be ordered by
description.
• Parts are available from your distributor.
Functional Parts List-
Gas Valve Blower Motor
Gas Manifold Blower Wheel
Natural Gas Orifice Blower Mounting Bracket
Propane Gas Orifice Blower Cutoff
Igniter Blower Housing
Flame Sensor Pressure Switch
Rollout Limit Switch Door Switch
Primary Limit Switch Auxiliary Limit Switch
Coil Front Cover Integrated Control Module
Transformer Door Switch
Induced Draft Blower
Heat Exchanger with Recuperator Coil