United States Stove 6039HF owner manual Circuit Board Functions, START-UP Sequence of Events

CIRCUIT BOARD FUNCTIONS

START-UP SEQUENCE OF EVENTS

Once the control panel is turned to on, a timer begins that will start, stop and continue operation of the Hearth

Focus as a preset temperature is achieved.

COMPONENT	OPERATION START	OPERATION END
Exhaust Blower	Starts Immediately	Will continue until shutdown. Shutdown will
		occur when the operating temperature is
		below 90 degrees.
Agitator	Three minutes after starting the agitator will	Will continue intermediately, has determined
	begin to turn	by the “HEAT SETTING”, until shutdown
Auger	Three minutes after starting the auger will	The auger will continue at the feed rate
	begin to turn	specified by the “HEAT SETTING”.
		NOTE: Safety switches, HI limit and vacuum
		sensor, must be activated to continue proper
		operation.
Room Fan	Begins when 110 degrees is reached.	Will continue to operate until the heater cools
		down to below 90 degrees. This may take
		several minutes up to an hour.
Automatic Shutdown	If after 15 minutes, the heater has not reached	Should the timer expire before the preset
	the preset operating temperature, the unit will	operating temperature is achieved, simply
	begin to automatically shut down.	reset the stove by pressing the “ON” buttton.
Normal Operation	If after 15 minutes the preset operating tem-	Operation will continue until either the
	perature of 110 degrees is achieved, normal	heater’s control is to the “OFF” position, or
	operation will continue.	the operating temperature falls below 90
		degrees. At such time the heater will default
		to the “Automatic Shut Down”.

SHUTDOWN SEQUENCE OF EVENTS

Once the Hearth Focus has reached the normal operating temperature and switched to the “OFF” position, the unit will continue to operate on a much lower setting for 10 minutes. (Approximately half of the “1” setting). After 10 minutes the auger will slow down further and continue at this feed rate until the heater’s “LOW LIMIT SAFTEY” sensor tells the control board it is safe to shutdown.

COMPONENT	SHUTDOWN	OPERATION END
Exhaust Blower	Unchanged operation until preset “OFF” tem-	Continues until the operating temperature falls
	perature is achieved.	below 90 degrees. May take several minutes
		up to an hour.
Agitator	Continues at a lower sequence	Continues until the operating temperature falls
		below 90 degrees.
Auger	Slows down to a “HALF SETTING” for 10	The auger will continue at the lower feed
	minutes and then to a “QUARTER SETTING”	rates until the operating temperature falls
	for the duration of the shutdown.	below 90 degrees.
		NOTE: Safety switches, HI limit and vacuum
		sensor, must be activated to continue
		proper operation.
Room Fan	Unchanged operation until preset “OFF” tem-	Will continue to operate until the heater cools
	perature is achieved.	down to below 90 degrees. This may take
		several minutes up to an hour.
Automatic Shutdown	If the heater’s “HI LIMIT” sensor snaps open,	It is rare that the HI LIMIT temperature is
	this will cause an automatic shutdown. This	reached. However, should this error occur,
	will be evident by the red light above “B” on	let the heater cool down for an hour then
	the control board flashing. NOTE: “HI LIMIT”	restart.
	errors are usually the result of operating at
	the highest heat setting for long periods of
	time, room fan failure or loose wire connec-
	tion.

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