Led Status And Troubleshooting - Honeywell SUPER TRADELINE S8610U Installation Instructions Manual

STEP 4: Check Pilot and Main Burner Lightoff.
1. Set the thermostat to "Call for Heat."
2. Watch the pilot burner during the ignition sequence.
See if one of the following occurs:
a. Ignition spark continues after the pilot is lit.
b. The pilot lights and the spark stops, but main
burner does not light.
c. The pilot lights, the spark stops and main burner
lights, but the pilot and main gas shut down
while the "Call for Heat" is still present.
3. If so, ensure adequate flame current as follows.
a. Turn off furnace at circuit breaker or fuse box.
b. Clean the flame rod with emery cloth.
c. Make sure electrical connections are clean and
tight. Replace damaged wire with moisture-
resistant No. 18 wire rated for continuous duty
up to 221°F (105°C).
d. Check for cracked ceramic insulator, which can
cause short to ground, and replace igniter-sen-
sor if necessary.
e. Check for cracked, damaged, burned, or dirty
spark ignition cable and replace if necessary.
Be sure ignition cable is not touching any flat
metal surface.
f. At the gas control, disconnect main valve wire
from the TH-W or MV terminal.
g. Turn on power and set thermostat to "Call for
Heat." The pilot should light but the main burner
will remain off because the main valve actuator
is disconnected.
h. Check the pilot flame. Make sure it is blue,
steady and envelops 3/8 to 1/2 in. (10 to 13
mm) of the flame rod. See Fig. 9 for possible
flame problems and their causes.
i. If necessary, adjust pilot flame by turning the
pilot adjustment screw on the gas control clock-
wise to decrease or counterclockwise to
increase pilot flame. Following adjustment,
always replace pilot adjustment cover screw
and tighten firmly to assure proper gas control
operation.
j. Set thermostat below room temperature to end
"Call for Heat."
4. Recheck ignition sequence as follows.
a. Reconnect main valve wire.
b. Set thermostat to "Call for Heat."
c. Watch ignition sequence at burner.
d. If spark still doesn't stop after pilot lights,
replace ignition control module.
e. If main burner doesn't light or if main burner
lights but system locks out, check the ignition
control module's ground wire and the gas con-
trol as described in "Troubleshooting" on
page 18 and refer to the Troubleshooting Guide
(Fig. 11 on page 21).
S8610U UNIVERSAL INTERMITTENT PILOT GAS IGNITION CONTROL
APPEARANCE
LAZY YELLOW FLAME
WAVING BLUE FLAME
NOISY LIFTING BLOWING
FLAME
HARD SHARP FLAME
Fig. 9. Examples of unsatisfactory pilot flames.

LED Status and Troubleshooting

The ignition control module has two LEDs; one for flame
sensing and one for system status:
19
SMALL BLUE FLAME
CHECK FOR LACK OF GAS FROM:
• CLOGGED ORIFICE FILTER
• CLOGGED PILOT FILTER
• LOW GAS SUPPLY PRESSURE
• PILOT ADJUSTMENT AT MINIMUM
CHECK FOR LACK OF AIR FROM:
• DIRTY ORIFICE
• DIRTY LINT SCREEN, IF USED
• DIRTY PRIMARY AIR OPENING,
IF THERE IS ONE
• PILOT ADJUSTMENT AT MINIMUM
CHECK FOR:
• EXCESSIVE DRAFT AT PILOT
LOCATION
• RECIRCULATING PRODUCTS
OF COMBUSTION
CHECK FOR:
• HIGH GAS PRESSURE
THIS FLAME IS CHARACTERISTIC
OF MANUFACTURED GAS
CHECK FOR:
• HIGH GAS PRESSURE
• ORIFICE TOO SMALL
FLAME LED
STATUS LED
Fig. 10. Location of LEDs.
CAUSE
M2233B
M23619
69-1955