The control attempts two additional ignition trials before going into lockout and the main gas valve relay is de-ener-gized immediately. There is a problem in the ignition sequence, it could be caused by a faulty igniter, flame sensor, gas valve or improper line pressure or combustion. If the thermostat is still calling for heat after one hour the control will automatically reset and attempt to ignite the burner again. Lockout and Reset Recovery from lockout requires a manual reset by either resetting the thermostat or removing 24 volts from 24 VAC(R) for a period of 5 seconds. Without prepurge there is a 3.5 second delay before the first try for ignition. Tries for Ignition One or three try versions available Trial for Ignition Periods 4.0,7.0,10.0, or 15.0 seconds available Prepurge & Interpurge None, 15, or 30 seconds depending on model. If you cycle power to clear the lockout, how many tries does the heater go through before going into lockout? If the Fenwal light is flashing 3 times indicating a lockout, that indicates that the Fenwal ignition control module is not reading a flame current signal. Normal ignition should occur. Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Check ignition sequence to determine which component is not functioning. attempt two additional ignition trials before going into lockout and the valve relays will be de-energized immediately. 4. Exceeding the temperature limits can cause nuisance lockouts and premature electrode failure. Recovery from lockout requires a manual reset by either resetting the thermostat or removing 24 volts from 24 VAC(R) for a period of 5 seconds. The Fenwal Controls® Platform Ignition Module (PIM) integrates the functions of Automatic Ignition Control with temperature regulating and control functions. LOCKOUT RESET LOCKOUT RESET Recovery from lockout requires a manual reset by either recy- Ignition Lockout LED Indication Steady on I Flash 2 Flashes 3 Flashes CONNECTION LIST 35-60 EDGE CONNECT MODELS 24 VAC Alarm (normally closed contact) PIN 3 VALVE S NSE GROUND Valve Power (output) Remote Flame Sensor System Power The LED will flash on for 1/4 second, then off for 1/4 second dur- ing a fault condition. another ignition attempt. (Sentry will retry ignition sequence 1 hour after ER6 code originally occurs or if control is reset) Fenwal ignition lockout. The PIM is designed for a ... • Manual Reset for Ignition Lockout or Hi-Limit (on-board or remote) • Field Test/pump exercise capability Reset the system control module as described here: If the control module goes into safety lockout, it will remain locked out until the system is reset. Do you have a picture of the Fenwal? 3. 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