Resideo S8610U Universal Intermittent Pilot Gas Ignition Control
TECHNICIAN'S QUICK REFERENCE GUIDE
Product Overview
The following service procedure provides a quick overview for the S8610U series control. For more information, refer to form 69-1955.
WARNING: Explosion Hazard. Can cause serious injury or death. This device can malfunction if it gets wet. Never try to use a device that has been wet - replace it. If module has been used with vent damper, it will only work with damper connected.
Typical Wiring Connections
Refer to Figure 1 for 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 (OPT.) | 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 plug | Connector for Vent Damper connection (used to control a connected damper in atmospheric appliances) |
| SPARK | 1/4 inch | High voltage sparking electrode |
| METER (μΑ) | Wire with 3/16 inch quick connect | Connection for ammeter probes for measuring flame current in μAmp DC. |
| SENSE JUMPER WIRE | 3/16 inch quick connect | Connects to the REMOTE SENSE connector for installations with a single spark rod (local flame sensing) |
| REMOTE SENSE | 3/16 inch quick connect | 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 terminal connector. |
Figure 1: Typical wiring connections.
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.
Trial for Ignition (TFI)
To select the Trial for Ignition timing, set SW2 according to Table 2.
| SW1 | SW2 | Prepurge | Trial For Ignition |
|---|---|---|---|
| OFF | OFF | None | 90 seconds |
| ON | OFF | 30 seconds | 90 seconds |
| OFF | ON | None | 15 seconds |
| ON | ON | 30 seconds | 15 seconds |
Figure 2: DIP Switch (S1) Location.
Figure 3: DIP Switch (S1) - shown with factory default settings (OFF) for SW1 and SW2.
NOTE: For installations with spark and sensor rods, this jumper wire is clipped as close to the circuit board as possible and the wire is discarded.
LED Status and Troubleshooting
The ignition control module has one LED used for flame sensing and system status.
Figure 4: Location of LED.
| Green LED Flash Codes | Indicates | Next System Action | Recommended Service Action |
|---|---|---|---|
| OFF | No "Call for Heat" | Not applicable | None |
| Flash Fast | Heartbeat | Power up - internal check | None |
| 4 Seconds ON then "x" flashes | Normal startup - ignition sequence started (including prepurge) | Not applicable | None |
| 2 flashes | 5 minute Retry Delay | 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. |
| 3 flashes | Pilot flame not detected during trial for ignition | Initiate new trial for ignition. Flash code will remain through the ignition trial until flame is proved. | If system fails to light on next trial for ignition, check gas supply, pilot burner, flame sense wiring, contamination of flame rod, burner ground connection. |
| 4 flashes | Flame sensed out of sequence | Recycle | Check for pilot flame. Replace gas valve if pilot flame present. If no pilot flame, cycle "Call for Heat." If error repeats, replace control. |
| 5 flashes | Damper Error: Damper required but not present, Damper failed to open within 60 seconds, Damper failed to close within 60 seconds | If situation self corrects within 10 seconds, control module returns to normal sequence. If flame out of sequence remains longer than 10 seconds, control will resume normal operation 1 hour after error is corrected. If damper error corrects, ignition control resumes normal operation. | Check damper connection, damper wiring, and 24V connection on control. Replace damper if necessary. Cycle "Call for Heat." If error repeats, replace control. |
| 6 flashes | Control Internal Error | Control module remains in wait mode. When the fault corrects, control module resumes normal operation. | Cycle "Call for Heat." If error repeats, replace control. |
| 7 flashes | Flame rod shorted to ground | Control module remains in wait mode. When the fault corrects, control module resumes normal operation. | Check flame sense lead wire for damage or shorting. Check that flame rod is in proper position. Check flame rod ceramic for cracks, damage or tracking. |
| 8 flashes | Low secondary voltage supply | Control module remains in wait mode. When the fault corrects, control module resumes normal operation. | Check transformer and AC line for proper input voltage to the control. Check with full system load on the transformer. |
Flash Code Descriptions:
- Flash Fast: rapid blinking.
- Heartbeat: Constant ½-second bright, ½-second dim cycles.
- 4-second solid on pulse followed by "x" 1-second flashes: indicates flame current to the nearest μA. This is only available in run mode.
- A single flash code number signifies that the LED flashes X times at 2 Hz, remains off for two seconds, and then repeats the sequence.
Flame Current Measurement
Flame current of the device can be measured using a standard micro-ammeter by simply inserting the meter probes into the holes labeled FLAME CURRENT, as shown in Figure 5.
Flame current must be measured with pilot valve lit but no main gas flowing.
- Disconnect MV leadwire from the control before measuring flame current.
- Set meter to DC µAmp scale.
- Ensure meter leads are positioned correctly [+/-].
NOTE: Trying to measure the pilot flame current in series with the wiring will not be accurate.
Recommended Minimum Pilot Only Flame Current: Must read steady 1 µAmp DC minimum. Flame current should be 2 µAmp or greater for reliable appliance operation.
Figure 5: Measuring flame current with micro-ammeter.
Contact Information
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
