Zone Control Loops

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From the choices you have made the problem you are experiencing
is most likely to be caused by problems with the zone control Loops

The most likely causes are:	Remedial Actions are:
Badly Tuned Loops Sensor Errors Seized Control Valves Loose Actuator Linkages Incorrect Combustion set-up	Retune Loops Clean Pyro Lens Check for purge air Check Test Switch Service Control Valve Reset Actuators Tighten Linkages Reset Combustion to Stoichiometric Ensure Correct Settings for Regulators.