Honeywell S8600B - LED Status and Troubleshooting

69-1954—01
12
S8600B,C,H,M; S8610B,C,H,M; S8670D,E,J,K INTERMITTENT PILOT GAS IGNITION CONTROL
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• If necessary, adjust pilot flame by turning the
pilot adjustment screw on the gas control
clockwise 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.
• Set thermostat below room temperature to end
call for heat.
THIS FLAME IS CHARACTERISTIC
OF MANUFACTURED GAS
CHECK FOR:
• HIGH GAS PRESSURE
• ORIFICE TOO SMALL
M2233B
Fig. 11. Examples of unsatisfactory pilot flames.
• Recheck ignition sequence as follows.
• Reconnect main valve wire.
• Set thermostat to call for heat.
• Watch ignition sequence at burner.
• If spark still doesn’t stop after pilot lights,
replace ignition control.
• If main burner doesn’t light or if main burner
lights but system locks out, check the control,
ground wire and gas control as described in
“Troubleshooting” on page 10 and refer to the
Troubleshooting Guide (Fig. 14).
LED Status and Troubleshooting
The control has one LED used for flame sensing and
system status:
STATUS LED
M29907
Fig. 12. Location of LED.
Table 6. Continuous Retry Models C, M, E, and K Only—Green LED Status Codes.
Green LED
Flash
Code
a
Indicates
Next System Action
Recommended Service Action
OFF
No “Call for Heat”
Not applicable
None
Flash Fast
Power up - internal check
Not applicable
None
Heartbeat
Normal startup - ignition
sequence started
(including prepurge)
Not applicable
None
4 Seconds
ON then “x”
flashes
Device in run mode. “x” =
flame current to the
nearest  A.
Not applicable
None
2
5 minute Retry Delay
- Pilot flame not detected
during trial for ignition
Initiate new trial for ignition after retry delay
completed.
If system fails to light on next trial for ignition check
gas supply, pilot burner, spark and flame sense
wiring, flame rod contaminated or out of position,
burner ground connection.
APPEARANCE
CAUSE
SMALL BLUE FLAME
CHECK FOR LACK OF GAS FROM:
• CLOGGED ORIFICE FILTER
• CLOGGED PILOT FILTER
• LOW GAS SUPPLY PRESSURE
• PILOT ADJUSTMENT AT MINIMUM
LAZY YELLOW FLAME
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
WAVING BLUE FLAME
CHECK FOR:
• EXCESSIVE DRAFT AT PILOT
LOCATION
• RECIRCULATING PRODUCTS
OF COMBUSTION
NOISY LIFTING BLOWING
FLAME
CHECK FOR:
• HIGH GAS PRESSURE
HARD SHARP FLAME