White Rodgers 50A66-743 Manual De Usuario

7

When system lockout occurs, the gas valve is de-energized. 
The circulator blower may be energized at heat speed for 
some faults, and if flame is sensed, the inducer blower is 
energized. The diagnostic indicator light will flash or glow 
continuously to indicate system status. 

will never override the precautionary features.)
To reset the control after system lockout, do one of 
the following:
1.  Interrupt the call for heat at the thermostat for at least 

one second, but for less than 20 seconds (if flame is 
sensed with the gas valve de-energized, interrupting the 
call for heat at the thermostat will 

not reset the control).

2.  Interrupt the 24 VAC power at the control for at least 

ten seconds. You may also need to reset the flame 
rollout sensor switch.

3.  After one hour in lockout, the control will automatically 

reset itself.

The 50A66-743 control continuously monitors its own 
operation and the operation of the system. If a failure oc-
curs, the DS 1 (red) and DS 2 (green) LEDs will indicate 
a failure code as shown below.