Troubleshooting - Honeywell S8600B Installation Instructions Manual

S8600B,C,H,M; S8610B,C,H,M; S8670D,E,J,K INTERMITTENT PILOT GAS IGNITION CONTROL
IDLE
(NOT POWERED)
"CALL
HEAT"
RECEIVED FROM
THERMOSTAT
POWER TO
MODULE AND
SELF CHECK
PREPURGE
(30 SECONDS)
TRIAL FOR
IGNITION
(TIMER STARTED)
FLAME
PROVED?
YES
SPARK OFF
OPEN MAIN GAS
VALVE
FLAME
STABILIZATION
(2 SECONDS)
RUN

TROUBLESHOOTING

WARNING
Fire, Explosion, or Electrical Shock Hazard.
Can cause severe injury, death or property damage.
Do not attempt to modify the physical or electrical
characteristics of this device in any way. Replace
it if troubleshooting indicates a malfunction.
69-1954—01
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OPERATING SEQUENCE - PREPURGE MODELS
S8760 E, K = RETRY
S8670 D, J = LOCKOUT
FOR
A
OPEN PILOT GAS
SPARK ON
CLOSE PILOT
NO
GAS VALVE
(BEFORE TRIAL FOR IGNITION TIMER EXPIRES)
NO
"CALL
FOR HEAT" NO
ENDS?
YES
CLOSE MAIN GAS
VALVE AND
PILOT GAS
VALVE
Fig. 10. Normal Operating Sequence for Prepurge Models.
RETRY DELAY
(5 MINUTES)
VALVE
RETRY
RETRY OR
SPARK OFF
LOCKOUT
MODEL?
CLOSE MAIN GAS
FLAME
YES
VALVE AND
LOST?
PILOT GAS
VALVE
10
WAIT FOR
"CALL FOR HEAT"
TO BE REMOVED
ACTIVATE ALARM
CONTACT(S)
(OPTIONAL)
LOCKOUT
A
M29906