Honeywell R7184B primary control diagnostic light

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Old 10-22-08, 08:28 AM
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Honeywell R7184B primary control diagnostic light

The diagnostic light on my Honeywell R7184B primary control unit is flasing that it is in "lockout" mode. The unit no longer resets. Where should I start to troubleshoot this problem? Thanks
 
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Old 10-22-08, 09:07 AM
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After three lockouts it is necessary to hold the reset in for either thirty seconds or a full minute (I forgot which) before it will reset.

It is not locking out without a reason. You need to determine WHY it is locking out. It could be anything from a dirty burner and cadmium sulfide cell to broken wiring to faulty ignition or worn nozzle of several other things.

When was this unit last serviced and what was done at that servicing?
 
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Old 10-22-08, 09:43 AM
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It had a tune up last November.
 
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