Honeywell S8610U Quick Reference Manual

Table 1. Typical wiring connections.
Connector
Label Size or Type Description
MV 1/4 inch Main Valve connection
MV/PV 1/4 inch Common terminal for gas valves
PV 1/4 inch Pilot Valve connection
BRN GND 1/4 inch Burner Ground
24V GND 1/4 inch Return path to transformer
24V 1/4 inch Optional—24 Vac power connection for Vent
Damper
TH-W 1/4 inch Connector for "Call for Heat" signal from
thermostat
P1 6-pin keyed Connector for Vent Damper connection (used
plug to control a connected damper in atmospheric
appliances)
P2 ECOM 3-pin EnviraCOM™ communications connector
P4 (Jumper) Jumper Provides a lockout for the DIP switch settings
SENSE Wire with Connects to the REMOTE SENSE connector
JUMPER 3/16 inch for installations with a single spark rod (local
WIRE quick flame sensing)
connect
NOTE: For installations with remote flame
sensing (separate spark and sensor rods), this
jumper wire is clipped as close to the circuit
board as possible and the wire is discarded.
REMOTE 3/16 inch Flame Sensor connector
SENSE
For single rod installations, connect the
SENSE JUMPER WIRE to this terminal
connector.
For dual rod installations, connect the flame
sense wire from the burner/igniter to this ter-
minal connector.
SPARK 1/4 inch High voltage sparking electrode
SeTTingS and adjuSTmenTS
diP SwiTch (S1) SeTTingS
When replacing an existing ignition control with the S8610U,
refer to 69-1955 for the correct DIP switch settings.
Important
Do not power the ignition control prior to setting the DIP
switches.
The following timing parameters may be set with this 2-position
DIP switch.
PrePurge
To select Prepurge, set SW1 according to Table 2.
2
Trial for igniTion (Tfi)
To select the Trial for Ignition timing, set SW2 according to
Table 2.
Table 2. diP Switch (S1) Settings.
Prepurge Trial For Ignition SW1 SW2
None 90 seconds OFF OFF
30 seconds 90 seconds ON OFF
None 15 seconds OFF ON
30 seconds 15 seconds ON ON
NOTE: The default factory settings (all OFF) are in Bold in
Table 2.
P4 JUMPER S1 DIP SWITCH
M23618
fig. 2. diP Switch (S1) and jumper (P4) location.
S1
ON
1 2
M23587
fig. 3. diP Switch (S1)—shown with factory default
settings (off) for Sw1 and Sw2.
3
led STaTuS and TrouBleShooTing
The ignition control module has two LEDs; one for flame sens-
ing and one for system status:
FLAME LED
M23619
STATUS LED
fig. 4. location of leds.
flame led (Yellow)
Indicates flame presence and strength. See Table 3.
STaTuS led (green)
Indicates system operation status and error conditions. See
Table 4 and the "Troubleshooting Guide" in 69-1955.
Table 3. Yellow led flame codes.
Yellow LED Flash Recommended
Code a Indicates Service Action
Heartbeat Normal Flame Signal Not applicable
2 Weak Flame Signal— Perform routine main-
System will operate tenance to assure opti-
reliably but flame signal mum flame signal.
is less than desired.
NOTE: This indication
may flash temporarily
during or shortly after
lightoff on some
applications.
4
Table 3. Yellow led flame codes. (continued)
1 Marginal Flame Check gas supply, pilot
Signal—System may burner, flame sense
not operate reliably over wiring, contamination
time. of flame rod, burner
ground connection.
Service call
recommended.
NOTE: This indication
may flash temporarily
during or shortly after
lightoff on some appli-
cations.
OFF Flame Signal below Check gas supply, pilot
minimum threshold for burner, flame sense
system operation. wiring, contamination
of flame rod, burner
ground connection.
a
Flash Code Descriptions:
- Heartbeat: Constant 1/2 second bright, 1/2 second dim cycles.
- The flash code number signifies that the LED flashes X times at 2
Hz, remains off for two seconds, and then repeats the sequence.
Table 4. green led Status codes.
Green LED
Flash Code Next System Recommended
(X + Y) Indicates Action Service Action
OFF No "Call for Heat" Not applicable None
Flash Fast Startup – Flame Not applicable None
sense calibration
Heartbeat Normal operation Not applicable None
2 5 minute Retry Initiate new trial If system fails to
Delay for ignition after light on next trial
retry delay com- for ignition, check
Pilot flame not
pleted. gas supply, pilot
detected during trial
burner, spark
for ignition.
and flame sense
wiring, flame rod
contaminated or
out of position,
burner ground
connection.
3 Recycle – Flame Initiate new trial If system fails to
failed during run. for ignition. Flash light on next trial
code will remain for ignition, check
through the igni- gas supply, pilot
tion trial until burner, flame
flame is proved. sense wiring,
contamination of
flame rod, burner
ground
connection.
5
Table 4. green led Status codes. (continued)
4 Flame sensed out If situation self Check for pilot
of sequence. corrects within 10 flame. Replace
seconds, control gas valve if pilot
module returns to flame present.
normal sequence. If no pilot flame,
If flame out cycle "Call for
of sequence Heat." If error
remains longer repeats, replace
than 10 seconds, control.
control module
goes to Flash
code 6+4 (see
below).
5 Damper Error: If damper error Check damper
– Damper required corrects, ignition connection, damp-
but not present control resumes er wiring, and 24V
normal operation. connection on
– Damper failed
control.
to open within 60
seconds Replace damper if
necessary.
– Damper failed
to close within 60
seconds
7 Flame sense leak- Control module Check flame
age to ground. remains in wait sense lead wire
mode. When the for damage or
fault corrects, shorting. Check
control module that flame rod is
resumes normal in proper position.
operation after a Check flame rod
one minute delay. ceramic for cracks,
damage or
tracking.
8 Low secondary volt- Control module Check transformer
age supply. remains in wait and AC line for
mode. When the proper input volt-
fault corrects, age to the control.
control module Check with full
resumes normal system load on the
operation after a transformer.
one minute delay.
6+2 5 minute Retry Initiate new trial Check gas supply,
Delay for ignition after pilot burner, spark
retry delay and flame sense
– On every third
completed. wiring, flame rod
retry on the same
contaminated or
"Call for Heat"
out of position,
burner ground
connection.
6