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11c Troubleshooting — spark-pilot boilers
The information on this page and
PAGESG THROUGHO APPLYPONLY TO SPARKIGNITEDI PILOTL #'A' BOILERS These boilers are equipped with an ignition control module that has in- dicator lights to show control status. #HARTS 2 through PAGESG help you identify problems based on indicator light conditions.
Control module
Solder or water splatter between plugs and circuit board can cause improper operation of control module. Place a shield over the boiler internal controls and components during installation. Failure to comply could result in severe personal injury, death or substantial property damage.
Make sure ground wiring is installed per wiring
DIAGRAM 'OOD GROUNDINGNIS EXTREMELYEIMPORTANTRFORO
proper operation.
Control indicator lights —
LOCKOUT modes
See Charts 1 through 7 in this section for detailed troubleshooting procedures.
4O RESETSCONTROLTAFTERTAALOCKOUT TURN OFFFPOWERWAT THEH6!# SERVICEVSWITCH OR TURN down all thermostats. Wait 45 seconds. Then restore power or call for heat.
POWER light flashing alone
5SUALLYAINDICATESIREVERSED POLARITY OF 6!# POWER WIRES
POWER and TSTAT CIRC lights flashing
Usually indicates stray voltage on external thermostat circuit wires (usually due to miswired
POWER and DAMPER lights flashing
Usually indicates damper circuit is closed when it should not be, or damper failed to close within 5 minutes.
POWER and FLAME lights flashing
Usually indicates false flame sense or flame sensed when it shouldn’t be there.
Control indicator lights —
POWER light on and FLAME light flashing
Usually indicates pilot flame was not established within 15 seconds from application OF SPARK #ONTROLTWILL mASH LIGHT BUTUWILL CONTINUE TO CYCLECINDElNITELY UNTILTmAME
is established or problem is corrected.
POWER light on and DAMPER light flashing
Usually indicates the damper circuit opened during the run cycle.
Troubleshooting the control module
See Figure 30 , page 53, for location of harness plug receptacles and plugs on the control module.
52 | Part Number |
